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Google's Gemini 4 Carbon took first place on Artificial Analysis's index on October 28 with a score of 59, but it launched only to vetted cyber defenders through the Fairwind Program, repeating the staged release Google used for Argon four weeks earlier.

Anthropic, OpenAI and Google shipped new flagships between September 1 and October 13, and once independent evaluators reran the headline benchmarks the frontier compressed into a statistical tie, leaving cost, tokens, speed and access as the differences buyers can measure.

Grok 4.6, Gemini 3.7 Flash, DeepSeek V4-Pro-0813, and GLM-5.3 shipped within three days of each other and not one is a new base model; the frontier is advancing by post-training, harness, and serving efficiency while every next-generation base stays in the oven.

Google's July 21 drop cut Flash token prices 17% and added a security-tuned Cyber variant, but the tell is the model that didn't ship: Gemini 3.5 Pro, promised for June, is still partner-only while compute moves to Gemini 4.

Google's 2h57m I/O 2026 keynote landed eight first-class platform shifts, from Gemini 3.5 Flash and Antigravity 2.0 to TPU 8t/8i and a $180-190B 2026 capex line, while the Pro model didn't ship.