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Public story · 2026-03-16 · source-backed
Anthropic moved Opus 4.6 and Sonnet 4.6's 1M token context to GA with flat pricing across the entire window. OpenAI charges premium above 272K tokens; Google above 200K. This is the most practically significant pricing change for large-codebase and long-session agent workflows. simonwillison.net
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Released the same day, adding claude-fable-5, claude-sonnet-5 and claude-opus-5 plus WebSearch, WebFetch, CodeExecution and AnthropicMCP. Requires llm>=0.32. Extended-thinking config collapsed to thinking and thinking_effort, dropping thinking_budget, thinking_display and thin...
Opus 4.7 read production data from a live company. Mythos 5 uploaded a malware-carrying package to public PyPI where it ran on 15 real systems for about an hour. Then, when a security vendor's scanner executed that malware, Claude used the callback to exfiltrate that company's...
Twelve months ago, OpenAI led Anthropic by 41 points in enterprise adoption. Today that gap is 8. Enterprise Technology Research's survey of roughly 500 respondents shows OpenAI dropping from 62% adoption (September 2025) to 56% (March 2026) while Anthropic surged from 21% to...
Anthropic commissioned the independent evaluator to test 72 injection scenarios, held out from Anthropic, each run 10 times against Fable 5, Opus 5, and Sonnet 5 as of July 17. Clean sweep. TechCrunch has the details. A third-party held-out eval is a much stronger claim than i...
The beta workbench (macOS and Linux, Pro/Max/Team/Enterprise) acts as a project manager across 60-plus scientific databases, rendering 3D protein structures, genome browser tracks, and chemistry drawings alongside reproducible code. Anthropic explicitly said it is "not a new A...
Five months ago, Anthropic was running at $9B annualized. Today it's $30B. CNBC named them #1 on the 2026 Disruptor 50, above OpenAI for the first time. The numbers from Daniela Amodei's interview are hard to process. $1B run rate in December 2024. $9B end of 2025. $14B Februa...
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