Modelgpt-6.1-sol
GPT-5.5 retirement in Codex
Effective October 14, 2026, at noon PDT (19:00 UTC), GPT-5.5 retires from Codex for users signed in with ChatGPT. The OpenAI API and Codex sessions authenticated with an API key aren't affected.
Specs
- Input
- text, image
- Output
- text
- Context window
- 1,050,000 tokens
- Max input
- 922,000 tokens
- Max output
- 128,000 tokens
- Knowledge cutoff
- Apr 30, 2026
Token pricing
| Model | Input | Cached input | Cache writes | Output |
|---|---|---|---|---|
| GPT-6.1 SolNew | $2.00 | $0.10 | $2.50 | $10.00 |
| GPT-6 Astra | $10.00 | $1.00 | $12.50 | $50.00 |
USD per 1M tokens. Standard text-token prices per 1M tokens from the official API docs, retrieved 2026-10-14.
The pricing table above lists the same values.
Benchmarks
Benchmarks not published by the source yet.
What changed
Effective October 14, 2026, at noon PDT (19:00 UTC), GPT-5.5 retires from Codex for users signed in with ChatGPT. The OpenAI API and Codex sessions authenticated with an API key aren't affected.
Use GPT-6.1 Sol (gpt-6.1-sol) when available to your plan and client.
Update workspace defaults, saved model settings, managed configurations,
custom agents, scheduled tasks, and scripts that still select gpt-5.5.
See GPT-5.5 retirement for plan-specific replacements and workspace model availability for administrator guidance.
Official entry: GPT-5.5 retirement in Codex
Who is affected
ChatGPT, Codex and API users with access to the model; availability depends on plan, client and workspace.
What to do now
Choose GPT-6.1 Sol in the model picker, or call gpt-6.1-sol through the API.
What is not confirmed
Benchmark results are added once the source publishes them and are not independently re-run. Prices are copied from the official docs and may change.
Sources
- OfficialGPT-5.5 retirement in Codex (official changelog) · Oct 14, 2026
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