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AI Daily — October 10, 2026

Published: October 10, 2026 Read time: 3 min
AI Daily — October 10, 2026

Today's briefing: the 5.5 family is complete, ChatGPT's ad rollout takes shape, and the open-weight boards have a new leader.

AI Daily — October 10, 2026

The 5.5 family is complete. Anthropic shipped Claude Haiku 5.5 on October 7 at $0.10/$0.50 per million tokens — roughly 75% below Haiku 4.5 — closing out a lineup that started with Opus 5.5 on September 22 ($4/$20) and added Sonnet 5.5 on September 28. The old guard is leaving with it: Haiku 4.5 was removed from Anthropic's model documentation on October 8 with a final retirement floor of October 15, and Sonnet 4.5 — deprecated September 30 — shuts down on November 30.

Ads are becoming real. OpenAI announced new visual ad formats on October 5 and will test them through late October across the Free and Go plans, the audience that now spans roughly 1.2 billion weekly users. Reports of expanded ad measurement followed on October 8. What began as a quiet experiment in September is now a structured rollout with formats, metrics, and a schedule.

The open-weight boards reshuffled. MiMo-V2.6-Pro has taken the top spot on the LMSA/Artificial Analysis open-weight index at 46.3, with GLM-5.3 second (44.8) and Kimi K3 third. On BenchLM's open-weight list, DeepSeek's V4.1 Flash — released September 10 with another 70% output-price cut — now leads. The assumption that GLM-5.3 would hold the crown through the autumn no longer holds; the open frontier is rotating faster than the closed one.

Closed-side scoreboard. Claude Opus 5.5 still tops the BenchLM composite at 86.3, with Sonnet 5.5 on the board (~83.8, SWE-bench Pro 81.3%) since its GA. GPT-6 Astra remains OpenAI's flagship at $10/$50, and October 7 marked the completion of its staged rollout to all ChatGPT users.

What to watch. Whether OpenAI's ad test converts into a general availability announcement in November; the first concrete deliverables from the labs' joint safety standards body (now operating under the SAFA name); and Google's Gemini 3.8 Flash promotional pricing ($0.75/$3.75), which runs through December 31, 2026 before standard rates (~$1.50/$7.50) take over on January 1.