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Carbon tops the Artificial Analysis Intelligence Index at 59, ahead of Claude Opus 5.5 (58) and GPT-6 Astra (57), and scores 88.2% on SEC-bench Pro for finding vulnerabilities. Access starts with vetted cyber defenders via Google's Fairwind Program, which has 650+ participating organizations.
Anthropic filed a Form S-1 with the SEC for a proposed IPO of Class A common stock, intending to list on the Nasdaq Global Select Market under the symbol "ANT." Share count and price range are not yet determined; Goldman Sachs and Morgan Stanley are named as prospectus contacts.
The 1T-parameter MoE model (49B active, 1M-token context) is now open-weight under Mistral's Ecosystem Open-Weight License. It scores 82% on the Artificial Analysis Cyber Index and ranks #1 among open models on Cognition's FrontierCode.
Priced at $1/M input and $5/M output tokens, roughly half GPT-6.1 Sol's API price, with a 1.05M-token context and 128K max output. It scores 85.5% on MMMU-Pro vision at max effort, 1.2 points behind GPT-6 Astra, but only 50.3% on Terminal-Bench 4.0.
Kimi K3.1 Pro is a 2.8T-total/104B-active MoE with a 1M-token context, priced at $2/M input and $10/M output. Artificial Analysis scores it 55, ahead of Claude Fable 5.1, GPT-6 Astra and Gemini 4 Argon (all 53), behind only Claude Opus 5.5 (58). Full weights are promised by Nov 4, 2026.
DeepSeek calls it a "minor update," but Terminal-Bench 4.0 jumps from 31.2 to 42.3 and DeepSWE hits 77.0, above Opus 5 (74.0) and GPT-5.6 Sol (73.0). Artificial Analysis scores it 45 on its Intelligence Index, +6 points and tied for #2 among open-weights models.
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