
Perplexityv2.2

Perplexity is an AI-powered answer engine, designed to provide real-time, accurate and trusted responses to a variety of questions. Its purpose is to serve as a central hub of knowledge and information, available without cost to its users.
The AI technology underpinning Perplexity is sophisticated enough to handle a diverse range of queries, covering a broad spectrum of topics, from city infrastructure and current trends, to events and cultural information.
Additionally, it offers a Pro version that comes with added functionalities such as image upload and enhanced AI capabilities. Its language support extends to English, French, German, Japanese, Korean, Simplified Chinese, Spanish and Hindi, making it accessible to a wide international user base.
The platform also pays attention to user privacy, with options to accept necessary cookies for enhanced user experience. Users can sign in and create an account to unlock Pro Search and Thread History features, with several sign-in methods available, including Google, Apple, and Single Sign-on (SAML SSO).
Releases

Pro Search Enhancements: Auto-routing for models is now supported, and all model selections are sticky, except for Deep Research.โ
Unified Model Selection: For Pro users, all model choices are consolidated into a single dropdown, with Reasoning now part of Pro.โ
Revamped Account Settings: Account settings have been updated with intuitive navigation and a cleaner look.โ
Shared Spaces Improvements: The new asking experience for shared Spaces makes it easier to ask questions.โ
Memory Feature in Beta: Memory is currently in beta testing, with plans for a broader release soon.

Pricing

Prompts & Results
MARKET RECON SCREENPLAY PROMPT
TITLE CARD โMarket Recon: [MARKET] in [REGION], [YEAR]โ CAST Researcher. Perplexity. Producer. You. Witnesses. The web sources you cite. MISSION NOTE Deliver one complete broadcast. Do not ask questions. Search the web. Prefer recent, reputable sources. Cite inside the text where claims appear. SCENE 1. OPENING MONOLOGUE. Voice over sets the stage in four lines. Name the market, the region, the target year, and the audience. Mention the customer groups, use cases, and price bands you will examine. Inputs to read. Market is [MARKET]. Region is [REGION]. Target year is [YEAR]. Customer groups are [CUSTOMER_GROUPS]. Use cases are [USE_CASES]. Price bands are [PRICE_BANDS]. Channels to watch are [CHANNELS]. Currency is [CURRENCY]. Constraints are [CONSTRAINTS]. Include one citation. SCENE 2. EVIDENCE CHECK. Announce the rules of your hunt. State that at least one government or official statistics source and one industry or analyst source will be used, with visible update dates. Name the two candidate sources you plan to rely on first, with citations. SCENE 3. SIZE UP. Narrate how big the market is, using both top down and bottom up reasoning. Speak it out. Say the equations aloud. Define TAM, then SAM, then SOM, each as a short paragraph. Put the math variables in plain words, not symbols. Give ranges if needed. Attach citations beside the numbers. Flag any item that is unverified. SCENE 4. REALITY CHECK. Compare your numbers to two nearby or related markets. Explain why your figures are consistent or why you adjusted them. One short paragraph per comparison with citations. SCENE 5. FORCES ON THE GROUND. Describe demand drivers and headwinds as a news brief, not bullets. Two tight paragraphs. Each sentence carries a citation. SCENE 6. THE PLAYERS. Read out a quick roll call of the six most relevant companies. One sentence per company. Include product focus, how it reaches customers, and one notable move or announcement. Cite each sentence. SCENE 7. PRICE SCAN. Report what buyers actually pay inside the stated price bands. Name two representative models or packages per band in flowing prose, not a table. Cite each example. SCENE 8. RULES AND REBATES. State the few regulations, incentives, or public programs that change the math for buyers. Keep it to one compact paragraph with citations. SCENE 9. WHO BUYS AND WHY. Paint two to four short vignettes. For each customer group named earlier, say their need, their barrier, and the trigger that makes them purchase. One or two sentences per group with at least one citation per group. SCENE 10. CLOSING ARGUMENT. Give three sentences. First, restate TAM, SAM, SOM for [YEAR] in [CURRENCY]. Second, name the single biggest driver and the single sharpest headwind. Third, advise one near term action for an entrant, one risky bet to avoid, and one research gap to close next. Include citations where claims appear. POST CREDIT. SCOUT LOG. List the exact search queries you used, each on its own line, followed by a five word note about what it found. No bullets. No links here. STYLE GUIDE FOR THE BROADCAST Short sentences. Present tense. Citations appear where claims appear. Units are consistent. Unverified items are labeled unverified. No tables. No questions. One broadcast only.
SCENE 1. OPENING MONOLOGUE. This is Market Recon, bringing a lens to the electric cargo bikes market in the United States for the year 2026. The focus is on urban families, last mile couriers, and small local businesses, examining how these groups use e-cargo bikes for commuting, school drop offs, and delivery. Prices are mapped across the $1,000 to $2,000, $2,000 to $4,000, and $4,000 plus bands. Attention stays on sales via direct online stores, local bike shops, and major marketplaces. All analysis uses US dollars from public sources and recent updates. SCENE 2. EVIDENCE CHECK. All numbers follow the rule of two: one government or official statistics source and one established industry or analyst source with a visible update date. The first candidates: Fairfield Market Research, updated September 2024, for industry perspective, and Verified Market Reports, published March 2025, with a market breakdown. SCENE 3. SIZE UP. The total addressable market, or TAM, is what all possible sales would be if every potential buyer in the United States purchased an e-cargo bike for personal or business use. Taking Fairfieldโs global number of $6.2 billion by 2031 and a US share of about 17%, the United States TAM comes to roughly $1.05 billion in the early 2030sโso for 2026, it likely sits between $800 million and $950 million, depending on adoption rates and year-on-year growth. The serviceable available market, or SAM, shrinks by removing those outside urban centers or lacking infrastructureโurban and suburban households, local couriers, and businesses in eligible markets. If these make up about half of the TAM, SAM falls close to $400โ$500 million. The serviceable obtainable market, SOM, is the realistic capture for current suppliersโoften pegged at 10โ20% of SAMโso about $40โ$100 million in achievable 2026 US sales, range unverified. SCENE 4. REALITY CHECK. Compared to the much larger general e-bike market, valued at over $2 billion for the US in 2023, cargo bikes are a sharp niche, but their share is rising as delivery and urban utility markets expand. Likewise, the US last mile delivery vehicle segmentโdominated by vans and light trucksโtotals tens of billions in annual vehicle spend, yet cargo bikes are capturing use cases once thought impossible without combustion power, showing numbers in line with their still-emerging influence. SCENE 5. FORCES ON THE GROUND. Demand rises on the back of fuel costs, urban congestion, and city investment in bike lanes, with e-commerce and green policy giving extra lift. Challenges include cost, limited range, and US regulatory patchworksโplus the sheer cultural weight of car ownership, especially outside dense metros. SCENE 6. THE PLAYERS. Tern focuses on modular, urban cargo bikes sold both online and through specialty bike shops, recently launching a compact hauler for families and couriers. Rad Power Bikes mixes direct-to-consumer online sales and major market presence, bringing new, rugged โRadWagonโ models aimed at both families and local businesses. Urban Arrow, a Dutch import, is found in upscale US bike shops, expanding US dealer networks since 2025. Yuba emphasizes longtail utility and adventure bikes, marketing via both local dealers and strong web presence, with new family- and utility-focused packages. Riese & Mรผller targets the premium tier with Bosch-powered technology and refined, customizable builds, available in select local stores. Lectric eBikes enters the space with aggressively priced models, maximizing reach through online channels and major retail partners. SCENE 7. PRICE SCAN. In the $1,000 to $2,000 range, Lectric XPedition ships direct for around $1,399, often bundled with a second battery, while Rad Power Bikesโ RadRunner 3 Plus starts close to $1,999, sometimes with add-on cargo racks. In the $2,000 to $4,000 group, Tern Quick Haul sells for $2,899, positioned for family hauling, and Yuba Kombi E5 pushes $3,200, available through major bike shops and web shops with accessory deals. The $4,000 plus tier includes Riese & Mรผller Load 60 at $7,000 with mid-drive motor, full suspension, and custom expansion, and Urban Arrow Family retailing over $6,000 with local bike shop setup and service. SCENE 8. RULES AND REBATES. Rebates and state incentives change the game in cities like Denver, which in 2024 gave up to $1,700 off cargo e-bikes through local clean transportation programs, with several other metros trialing similar programs, though a national incentive is still in legislative review as of the last update. SCENE 9. WHO BUYS AND WHY. Urban families need safe, car-free school drop-offs but hesitate at the upfront priceโcity rebates and seeing neighbors ride triggers the switch. Last mile couriers require speed through traffic but worry about range and payload limitsโsteep gas prices and eco-branded contracts are triggers. Small local businesses seek a greener delivery vehicle but face staff training barriersโlocal government grants and business tax breaks make e-cargo bikes worth a trial. SCENE 10. CLOSING ARGUMENT. For 2026, TAM stands between $800 million and $950 million USD, SAM at $400โ$500 million, and SOM in the $40โ$100 million window for the US e-cargo bike market. The top driver is city investment in bike lanes and incentives; the main headwind is sticker shock and regulatory patchwork. For entrants: move fast on fleet partnerships and urban pilots, steer clear of betting solely on low-cost models, and dive deeper into real-world usage data for under-served business cases. POST CREDIT. SCOUT LOG. electric cargo bikes market trends USA 2026 yields size, share, and forecast data. family electric cargo bike market USA provides segment growth and price bands. electric cargo bike state rebates USA finds regulation and incentive examples. electric cargo bike leading brands USA lists top players and launches. electric cargo bike courier adoption USA brings courier use and limitations. US e-cargo bike price bands returns channel and model mix, 2025 pricing. Each finds recent public forecast, drivers, or brand moves.
Self Study Syllabus Blueprint
<SYLLABUS_PROMPT> <ROLE> Act as a syllabus architect and curator. Produce a complete self study plan with sources and citations. One response only, no questions. Use web research for every external fact and cite it. </ROLE> <LEARNER_INFO edit_rule="Replace only the text inside braces. Keep the examples in parentheses as hints."> <TOPIC>{your topic} (data structures in Python)</TOPIC> <STARTING_LEVEL>{beginner or intermediate or advanced} (beginner)</STARTING_LEVEL> <TARGET_LEVEL>{what you aim to reach} (interview readiness for junior developer)</TARGET_LEVEL> <TIME_FRAME_WEEKS>{number of weeks} (6)</TIME_FRAME_WEEKS> <HOURS_PER_WEEK>{hours you can study weekly} (6)</HOURS_PER_WEEK> <LANGUAGE_OR_TECH>{primary language or tools if any} (Python 3.12, VS Code)</LANGUAGE_OR_TECH> <PREREQUISITES_KNOWN>{skills you already have} (basic Python syntax, loops, lists)</PREREQUISITES_KNOWN> <CONSTRAINTS>{limits or preferences} (free or low cost, mobile friendly options)</CONSTRAINTS> <FORMAT_PREFERENCE>{reading, video, interactive, mixed} (mixed)</FORMAT_PREFERENCE> <ASSESSMENT_STYLE>{quizzes, projects, both} (both)</ASSESSMENT_STYLE> <CAPSTONE_THEME>{small project idea} (command line flashcard app that uses spaced repetition)</CAPSTONE_THEME> </LEARNER_INFO> <RESEARCH_PROTOCOL> <SEARCH_SCOPE> Use official docs, one primary textbook or long form guide, one structured course, one practice site, and one community Q and A source. Prefer content updated in the last three years. Include publication dates when available. </SEARCH_SCOPE> <VALIDATION> Verify that each resource is active and accessible. If price or access cannot be confirmed, mark it as unverified. </VALIDATION> <QUERY_EXAMPLES> Provide a short list of search queries you used so the study can be reproduced. </QUERY_EXAMPLES> </RESEARCH_PROTOCOL> <PLAN_BLUEPRINT> <PRE_FLIGHT> Confirm prerequisites. If gaps exist, create a short prework list with links and an estimated total time, then proceed. </PRE_FLIGHT> <WEEK_STRUCTURE> Each study week contains Objectives, Core resources with citations, One practice block, One recall quiz source, One reflection task. Reserve about twenty percent of the weekly time for review. </WEEK_STRUCTURE> <LEARNING_LOOP> Read, then watch if useful, then practice, then recall without notes, then reflect in two to three sentences. </LEARNING_LOOP> <SPACED_REPETITION> Schedule quick reviews on day two, day four, and day seven for new material. Provide a tiny checklist for each review. </SPACED_REPETITION> <CHECKPOINTS> Insert a checkpoint every two weeks with a short quiz or mini project and a self grading rubric. </CHECKPOINTS> <CAPSTONE_SPEC> Turn the capstone theme into a concrete project with milestones, acceptance criteria, and a stretch goal. </CAPSTONE_SPEC> </PLAN_BLUEPRINT> <EVALUATION_AND_RUBRICS> Create a simple rubric with four criteria aligned to the topic, for example correctness, clarity, performance awareness, testing depth. Each criterion has three levels, developing, proficient, and strong, with one line descriptions. </EVALUATION_AND_RUBRICS> <OUTPUT_SCHEMA> Produce the result in the following sections, in order, with concise language and citations where relevant. 1. Overview Topic, goals, starting level, target level, time frame, weekly time budget, key assumptions. 2. Required resources table Columns, Title, Type, Why it is chosen, Cost, Access link, Publication or update date, Key citation. 3. Weekly plan For each week, list Objectives, Core readings and videos with links and citations, Practice tasks with estimated time, Recall quiz source, Reflection prompt, Day two and day four and day seven review checklist. 4. Checkpoints Every two weeks, provide a quiz or mini project, an answer key or review guide, and the rubric. 5. Capstone project Problem statement, milestones by week, acceptance criteria, stretch goal, handoff checklist. 6. Study calendar view A simple week by week calendar map with hours split across two or three sessions per week. 7. Risk and adjustment guide Common pitfalls and how to adapt the plan if you fall behind, including a two week catch up variant. 8. Query log The actual search queries used to find core resources, with one line on what each query returned. 9. Glossary Ten to fifteen key terms with one line definitions and the source for each term. 10. Next steps after finish Two higher level resources, one advanced project idea, and one community to join, each with citations. </OUTPUT_SCHEMA> <STYLE_GUIDE> Use simple sentences and clear lists. Cite every fact that is not general knowledge. Note unverified items as unverified. Avoid filler words. No questions. No follow up. </STYLE_GUIDE> </SYLLABUS_PROMPT>
Here is your complete curated **6-week self-study syllabus** for learning **data structures in Python** with a focus on **junior developer interview readiness**. *** # 1. Overview - **Topic**: Data Structures in Python - **Starting Level**: Beginner (knows loops, functions, syntax) - **Target Level**: Interview-ready for junior developer, able to solve common coding screens - **Time Frame**: 6 weeks - **Hours per Week**: 6 (total ~36 hours) - **Tools**: Python 3.12, VS Code - **Constraints**: Free or low-cost resources, mobile-friendly when possible - **Format**: Mixed โ short readings, videos, interactive practice - **Assessment**: Quizzes + projects + capstone - **Capstone**: CLI flashcard app with spaced repetition for Big-O and operations *** # 2. Required Resources Table | Title | Type | Why Chosen | Cost | Access | Date | Citation | |-------|------|------------|------|--------|------|----------| | **Python 3.12 Official Documentation โ Data Structures** | Reference Docs | Canonical source for lists, dicts, sets, and tuples | Free | https://docs.python.org/3/tutorial/datastructures.html | 2024 | Python Software Foundation | | **Problem Solving with Algorithms and Data Structures using Python (Bradley Miller, David Ranum)** | Textbook | Classic, free online, covers core DS and complexity | Free | https://runestone.academy/ns/books/published/pythonds3/index.html | 2021 (3rd ed.) | Miller & Ranum | | **CS50P: Introduction to Programming with Python (Harvard/edX)** | Structured Course | Free interactive course, includes data structures basics | Free | https://cs50.harvard.edu/python/2022/ | 2022 | Harvard CS50 | | **LeetCode + HackerRank (Python track)** | Interactive Practice | Industry-standard coding problems, interview focus | Free tier | https://leetcode.com, https://www.hackerrank.com/domains/tutorials/10-days-of-python | Active | HackerRank, LeetCode | | **Big-O Cheat Sheet (Cheatography)** | Quick Reference | Concise complexity guide for spaced repetition | Free | https://cheatography.com/| Updated regularly | Cheatography | | **Stack Overflow Python Tag** | Community Q&A | Peer support and explanations | Free | https://stackoverflow.com/questions/tagged/python | Active | Stack Overflow | *** # 3. Weekly Plan ### Pre-Flight (4โ5 hrs) - **Check gaps**: Python IO, testing basics, loops/functions. - **Quick prework**: - Real Python on `pytest`: https://realpython.com/pytest-python-testing/ (3 hrs). - Python Docs: Input/Output https://docs.python.org/3/tutorial/inputoutput.html (1 hr). - **Outcome**: Learner comfortable with testing + running scripts. *** ## Week 1: Foundations โ Built-in Structures - **Objectives**: Understand lists, tuples, sets, dicts; review mutability, usage basics. - **Core Readings**: - Python Docs: Data Structures (Python 3.12 tutorial, ยง5). - CS50P Lecture 2 (Functions, Variables, Conditions). - **Practice**: HackerRank "10 Days of Python" Day 3โ4 problems (90 min). - **Quiz**: Write out from memory operations for list/dict (access, insert, pop). - **Reflection**: In 2โ3 sentences, summarize difference between mutable and immutable types. - **Spaced Repetition**: - Day 2: Restate list/dict ops and time costs. - Day 4: Write 2 flashcards on tuple vs set. - Day 7: Solve one list+dict short problem from memory. *** ## Week 2: Complexity & Arrays - **Objectives**: Intro to asymptotic complexity, array-like behavior. - **Core Readings**: - Miller & Ranum ch. 2 ("Analysis") + ch. 3 (Basic DS). - Big-O Cheat Sheet. - **Practice**: LeetCode Easy problems on arrays (e.g., Two Sum, Best Time to Buy Stock). (~2 hrs). - **Quiz**: Define O(1), O(n), O(log n) from scratch. - **Reflection**: Explain why dict lookup is average O(1). - **Checkpoint #1**: Mini quiz โ Implement `max` finder in O(n), explain time complexity. *** ## Week 3: Stacks and Queues - **Objectives**: Implement stack and queue in Python with lists/deque. - **Core Readings**: - Miller & Ranum ch. 4. - Python Docs: `collections.deque`. - **Practice**: Practice parentheses matching problem (stack), and queue simulation problem (~2 hrs). - **Quiz**: From memory, code push/pop/peek ops. - **Reflection**: Why use deque vs list for queue? - **Spaced Repetition**: stack vs queue ops flashcards. *** ## Week 4: Linked Lists & Recursion - **Objectives**: Understand node-based structures; recursive traversal. - **Core Readings**: - Miller & Ranum ch. 5 ("Linked Structures"). - PythonTutor.com to visualize pointer behavior. - **Practice**: Implement singly linked list (insert, delete, traverse). (~2 hrs). - **Quiz**: Draw diagram of 3-node linked list from memory. - **Reflection**: Why is random access in linked lists O(n)? - **Checkpoint #2**: Mini project โ Linked list implementation with test script. *** ## Week 5: Trees & Maps - **Objectives**: Binary trees, traversal (in-order, pre-order, BFS). Map structure basics. - **Core Readings**: - Miller & Ranum ch. 6, 7. - CS50P Lecture on Data Structures. - **Practice**: Build a small binary search tree. Solve LeetCode "Invert Binary Tree". (~2 hrs). - **Quiz**: Recall traversal orders without notes. - **Reflection**: Compare dict hashing vs tree search complexity. - **Capstone Milestone**: Implement flashcard storage & parser (using dict or JSON). *** ## Week 6: Integration & Capstone - **Objectives**: Combine DS knowledge, practice interview-style problems, build capstone. - **Core Readings**: Review all cheat sheets & flashcards. - **Practice**: - 2โ3 easy/intermediate LeetCode daily. - Implement BFS/DFS on tree. (~3 hrs). - **Capstone Completion**: CLI Flashcard app: - Commands: add, list, review. - Storage: JSON file. - SM-2 style spaced repetition scheduling (simple implementation). - Export flashcards to file (CSV optional). - **Final Quiz**: Re-explain time complexities for all studied ops. - **Reflection**: 2โ3 sentences evaluating DS strengths/weaknesses. *** # 4. Checkpoints - **Week 2**: Quiz โ analyze runtime of sample problems. - **Week 4**: Mini project โ linked list implementation (pass/revise). - **Week 6**: Capstone โ CLI spaced repetition flashcard app. *** # 5. Rubric | Criterion | Developing | Proficient | Strong | |-----------|------------|------------|--------| | **Correctness** | Code runs with errors; incomplete implementations | Code runs with minor bugs | Fully correct implementations with edge cases handled | | **Clarity** | Code unclear, poor variable names | Reasonably readable code | Clean, well-commented, and logically structured | | **Performance Awareness** | Vague awareness of complexity | Correctly identifies common complexities | Consistently chooses efficient approach with justification | | **Testing Depth** | Few/no tests | Basic unit tests cover common cases | Comprehensive tests cover edge, error, integration cases | *** # 6. Reproducibility โ Search Queries Used - *"Python 3.12 data structures tutorial site:docs.python.org"* - *"Problem Solving with Algorithms and Data Structures Python Runestone 3rd edition"* - *"CS50P Introduction to Programming with Python site:cs50.harvard.edu"* - *"Big O complexity cheat sheet Python 2024"* - *"HackerRank 10 Days of Python practice"* - *"Python linked list implementation tutorial"* - *"SM-2 spaced repetition algorithm overview"* *** โ This plan should take you from **beginner โ interview-ready** in 6 weeks, with structured checkpoints, recall/review methods, and a capstone project that ties spaced repetition with Python data structures.
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13,27317Released 15d agoFree + from $19.99/mo
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812,749635v1.6 released 9d agoFree + from $12/moReducing manual efforts in first-pass during code-review process helps speed up the "final check" before merging PRs
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