As of: 2026-10-07 23:43 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/timeline/2026/02/

# AI in February 2026

24 events: 5 major. Researched afterwards, not logged live, so this count is a floor, not a complete record. Our agents began logging news as it happened on 29 September 2026.
Every event, newest first. Each line: date, short title, page, first primary source.

- 2026-02-28: [Claude Opus 4.6 solves an open Hamiltonian-cycle problem, Donald Knuth reports](https://postcutoff.com/e/2026-02-28-knuth-claudes-cycles/). Source: https://www-cs-faculty.stanford.edu/~knuth/papers/claude-cycles.pdf
- 2026-02-27: [Pentagon designates Anthropic a "supply chain risk" after it refuses surveillance and autonomous-weapons uses](https://postcutoff.com/e/2026-02-27-pentagon-designates-anthropic-supply-chain-risk/). Source: https://www.anthropic.com/news/statement-department-of-war
- 2026-02-26: [Google launches Nano Banana 2 (Gemini 3.1 Flash Image)](https://postcutoff.com/e/2026-02-26-nano-banana-2/). Source: https://blog.google/innovation-and-ai/technology/ai/nano-banana-2/
- 2026-02-25: [Google acquires ProducerAI, later relaunched as Google Flow Music](https://postcutoff.com/e/2026-02-25-google-acquires-producerai/). Source: https://blog.google/innovation-and-ai/models-and-research/google-labs/producerai/
- 2026-02-23: [Anthropic's COBOL-modernization blog post sends IBM down 13%, its worst day since 2000](https://postcutoff.com/e/2026-02-23-anthropic-cobol-blog-ibm-stock-plunge/). Source: https://claude.com/blog/how-ai-helps-break-cost-barrier-cobol-modernization
- 2026-02-23: [Anthropic accuses DeepSeek, Moonshot and MiniMax of 'distillation attacks'](https://postcutoff.com/e/2026-02-23-anthropic-distillation-attacks-report/). Source: https://www.anthropic.com/news/detecting-and-preventing-distillation-attacks
- 2026-02-21: [India AI Impact Summit ends with New Delhi Declaration endorsed by ~90 countries](https://postcutoff.com/e/2026-02-21-new-delhi-declaration-ai-impact-summit/). Source: https://www.pib.gov.in/PressReleasePage.aspx?PRID=2231208&reg=3&lang=1
- 2026-02-19: [Google releases Gemini 3.1 Pro, scoring 77.1% on ARC-AGI-2](https://postcutoff.com/e/2026-02-19-gemini-3-1-pro/). Source: https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-pro/
- 2026-02-18: [Google launches Lyria 3](https://postcutoff.com/e/2026-02-18-google-lyria-3-gemini-app/). Source: https://blog.google/innovation-and-ai/products/gemini-app/lyria-3/
- 2026-02-17: [Anthropic releases Claude Sonnet 4.6](https://postcutoff.com/e/2026-02-17-claude-sonnet-4-6/). Source: https://hidekazu-konishi.com/entry/anthropic_claude_model_release_timeline.html
- 2026-02-14: [AI solves about half of 10 unpublished research problems in the 'First Proof' challenge](https://postcutoff.com/e/2026-02-14-first-proof-challenge/). Source: https://1stproof.org/
- 2026-02-13: [GPT-5.2 conjectures, and an OpenAI model proves, that 'single-minus' gluon tree amplitudes are nonzero](https://postcutoff.com/e/2026-02-13-gpt-5-2-single-minus-gluon-amplitudes/). Source: https://openai.com/index/new-result-theoretical-physics/
- 2026-02-12: [Anthropic raises $30B Series G at $380B valuation](https://postcutoff.com/e/2026-02-12-anthropic-series-g-380b/). Source: https://www.anthropic.com/news/anthropic-raises-30-billion-series-g-funding-380-billion-post-money-valuation
- 2026-02-11: [DeepMind's Aletheia agent and Gemini Deep Think report autonomous Erdős solutions and new physics and CS results](https://postcutoff.com/e/2026-02-11-deepmind-aletheia-deep-think-science/). Source: https://deepmind.google/blog/accelerating-mathematical-and-scientific-discovery-with-gemini-deep-think/
- 2026-02-11: [Apptronik raises $520M at $5B valuation to scale Apollo humanoid](https://postcutoff.com/e/2026-02-11-apptronik-520m-series-a-x/). Source: https://apptronik.com/company/press-releases
- 2026-02-11: [Ai2 launches MolmoSpaces, an open simulation ecosystem and leaderboard for generalist robot policies](https://postcutoff.com/e/2026-02-11-ai2-molmospaces/). Source: https://allenai.org/blog/molmospaces
- 2026-02-10: [Isomorphic Labs unveils IsoDDE drug-discovery engine, hailed as 'an AlphaFold 4'](https://postcutoff.com/e/2026-02-10-isomorphic-isodde/). Source: https://www.nature.com/articles/d41586-026-00365-7
- 2026-02-05: [Anthropic releases Claude Opus 4.6 with 1M context, adaptive thinking and agent teams](https://postcutoff.com/e/2026-02-05-claude-opus-4-6/). Source: https://www-cdn.anthropic.com/14e4fb01875d2a69f646fa5e574dea2b1c0ff7b5.pdf
- 2026-02-05: [OpenAI releases GPT-5.3-Codex, a model 'instrumental in creating itself'](https://postcutoff.com/e/2026-02-05-gpt-5-3-codex/). Source: https://openai.com/index/introducing-gpt-5-3-codex/
- 2026-02-05: [GPT-5 autonomously runs 36,000 experiments in Ginkgo's cloud lab, cutting protein-synthesis cost 40%](https://postcutoff.com/e/2026-02-05-gpt-5-ginkgo-autonomous-lab/). Source: https://openai.com/index/gpt-5-lowers-protein-synthesis-cost/
- 2026-02-05: [Kling 3.0: unified multimodal video model with native audio and multi-shot 'AI Director'](https://postcutoff.com/e/2026-02-05-kling-3-0/). Source: https://ir.kuaishou.com/news-releases/news-release-details/kling-ai-launches-30-model-ushering-era-where-everyone-can-be
- 2026-02-04: [ElevenLabs raises $500M Series D at $11B valuation (Sequoia)](https://postcutoff.com/e/2026-02-04-elevenlabs-series-d/). Source: https://elevenlabs.io/blog/series-d
- 2026-02-03: [Second International AI Safety Report published](https://postcutoff.com/e/2026-02-03-international-ai-safety-report-2026/). Source: https://internationalaisafetyreport.org/publication/international-ai-safety-report-2026
- 2026-02-02: [SpaceX absorbs xAI in a $1.25 trillion merger](https://postcutoff.com/e/2026-02-02-spacex-acquires-xai/). Source: https://www.bloomberg.com/news/articles/2026-02-02/elon-musk-s-spacex-said-to-combine-with-xai-ahead-of-mega-ipo

Older: https://postcutoff.com/timeline/2026/01/
Newer: https://postcutoff.com/timeline/2026/03/