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GPT-5.5
● liveLive. On the board as live since 2026-04-24 — the watchers keep tracking it: lineup changes, pricing moves and deprecations all alert.
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Coding leaderboard
#18 of 40 on the coding index, at 52.6 · combines LMArena · Coding, LiveBench · Coding, Vals Vibe Code Bench
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Where to use GPT-5.5
52 providers list GPT-5.5 in the models.dev catalog (as of 2026-10-27), under the model ids shown below.
gpt-5.5 · gpt-5.5-proopenai.gpt-5.5gpt-5.5gpt-5.5openai/gpt-5.5 · openai/gpt-5.5-proopenai/gpt-5.5 · openai/gpt-5.5-fast · openai/gpt-5.5-progpt-5.5gpt-5.5gpt-5.5openai/gpt-5-5 · openai/gpt-5.5-progpt-5.5 · gpt-5.5-proopenai/gpt-5.5 · openai/gpt-5.5-proAlso listed by CommandCode, CrossModel, DaoXE, Databricks, DevPass (LLM Gateway), DigitalOcean, Eden AI, FastRouter, FreeModel, FrogBot, GitHub Copilot, GitLab Duo, GMI Cloud, HPC-AI, Impossibl, Kenari, Kilo Gateway, LLM Gateway, LowRouter, Merge Gateway, Model Oracle AI, NanoGPT, NEAR AI Cloud, Neon, Ofox, OpenCode, Opper, OrcaRouter, Perplexity Agent, Pioneer, Poe, Prime Inference, Requesty, SAP AI Core, Snowflake Cortex, UnoRouter, Venice AI, Vivgrid, Xpersona, ZenMux.
Listings cover the model family, so a provider may list a sibling tier under the same name. Check the id before you build on it.
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GPT-5.5: quick answers
Is GPT-5.5 out?
Yes. GPT-5.5 is live and has been since April 24, 2026.
When was GPT-5.5 released?
April 24, 2026.
Is GPT-5.5 good for coding?
On the ArtificialWatch coding index it scores 52.6, #18 of 40 ranked models. The index combines LMArena · Coding, LiveBench · Coding and Vals Vibe Code Bench, taking the median of each model's percentile across them.
Who makes GPT-5.5?
OpenAI. ArtificialWatch also tracks GPT-6.1 Terra, GPT-6.1 Sol, GPT-6 Luna, GPT-6 Sol, GPT-Live-1, GPT-Image-2.5, GPT-6 Astra and ChatGPT-5.6 from OpenAI.
Where can I use GPT-5.5?
52 providers list it in the models.dev catalog, including OpenAI, Amazon Bedrock, Azure, Azure Cognitive Services and OpenRouter. The exact model ids each one lists are on this page.
How much does GPT-5.5 cost?
OpenAI's own API lists GPT-5.5 (gpt-5.5) at $5 per million input tokens and $30 per million output tokens, and $0.50 per million cached input tokens. Prompts over 272K tokens cost $10 input and $45 output. Prices as published in the models.dev catalog, as of 2026-10-27.
What is GPT-5.5's context window?
1.05M tokens, with up to 128K output tokens per response, as OpenAI lists GPT-5.5 (gpt-5.5).
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