Minor changes to the name, such as using "GPT 5.5 mini" or "GPT-5.5 high" instead of "GPT 5.5", are acceptable when determining the release. Also, any major iteration of OpenAI models clearly expected to go beyond "GPT 5.4" counts. eg. "GPT 5.6" counts if they skip over GPT 5.5. GPT 5.4 or GPT 5.3 do NOT count.
To count as released, the model must be accessible to some members of the public outside OpenAI (a closed beta doesn't count). If it is available through some API only this counts as a release.
See also:
/Bayesian/when-will-xai-release-grok-5
/Bayesian/gemini-35-google-release-date
/Bayesian/gemini-40-google-release-date
/Bayesian/gpt-53-openai-release-date
/Bayesian/gpt55-openai-release-date (this market)
/Bayesian/when-will-openai-release-gpt6
/Bayesian/claude-46-anthropic-release-date
/Bayesian/when-will-anthropic-release-claude-qZd5QEQ225
/Bayesian/when-will-deepseek-release-v4
/Bayesian/when-will-deepseek-release-r2
/Bayesian/when-will-meta-release-llama-5-6h9UypqOdp
/Bayesian/when-will-alibaba-release-qwen-4
/Bayesian/when-will-moonshot-release-kimi-k3
/Bayesian/glm-5-zai-release-date
/Bayesian/when-will-openai-release-their-next
/Bayesian/when-will-thinking-machines-announc
/Bayesian/veo-4-google-release-date
/Bayesian/new-image-video-mango-model-meta-re
Update 2026-02-08 (PST) (AI summary of creator comment): GPT 5.5 Codex (or similar naming variations like "GPT-5.5 Codex") will count as a valid release for this market.
Update 2026-02-15 (PST) (AI summary of creator comment): GPT 6 does NOT count as a valid release for this market (it must be GPT 5.5 or a version between 5.5 and 5.9).
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