Andrei's List

Claude Opus 4.6 Better financial reasoning (+5.47% on Finance Agent, SOTA on TaxEval) Improved information extraction (BrowseComp, DeepSearchQA) Gains on SWE-bench and agentic benchmarks 128K max output tokens (was 64K) Adaptive thinking replaces budget_tokens (deprecated) New "max" effort level; effort parameter now GA Server-side context compaction (infinite conversations) Data residency controls (inference_geo) Prefilling assistant messages removed Better prompt injection resistance Stronger alignment on sensitive tasks Better first-pass quality for spreadsheets, presentations, financial models Claude in Excel handles longer, more complex tasks