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[ARTICLE · art-148863] src=llmstatus.ai ↗ pub= topic=large-language-models verified=true sentiment=· neutral

OpenAI o1-pro deprecated, retires 2026-10-23 → GPT-5.5 Pro

OpenAI has deprecated o1-pro, the o-series model released as o1-pro-2025-03-19, with retirement set for 2026-10-23 and migration directed to GPT-5.5 Pro, according to the provider's deprecation announcement. The model carries a 200k context window, 100k max output, and pricing of $150 per 1M input tokens and $600 per 1M output tokens, and is also referenced as o1-pro and openai/o1-pro. The deprecation gives teams roughly a year to find and migrate code calling o1-pro before it stops serving requests.

read1 min views3 publishedOct 10, 2026
OpenAI o1-pro deprecated, retires 2026-10-23 → GPT-5.5 Pro
Image: Llmstatus (auto-discovered)

OA▲ Retiring soon

OpenAI · o1-pro-2025-03-19 o-seriestext+vision200k context100k max out$150 / $600 per 1M

also matches:

`o1-pro-2025-03-19`` o1-pro``openai/o1-pro`
[provider announcement →](https://developers.openai.com/api/docs/deprecations)

Does your code call OpenAI o1-pro?

$ curl -fsSL https://llmstatus.ai/install.sh | bash

Then mm status in any repo — it finds every model you use and flags the ones on a clock. No account, nothing uploaded.

Get alerted before it retires →

source & further reading
llmstatus.ai — original article DeepSeek V3 deprecated → DeepSeek V4 Pro New model: Qwen3.7 Flash (Alibaba (Qwen)) Qwen2.5 72B deprecated → Qwen3 Max
── more in #large-language-models 4 stories · sorted by recency
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