WhichBot › What replaced it › What replaces GPT-5.1?
Last checked Oct 28, 2026 · plain English · no paid picks
What replaces GPT-5.1?
Short answer: GPT-6 Sol. OpenAI names it as the replacement, and GPT-5.1 shuts down in OpenAI's developer service on Apr 1, 2027.
What to do: Developers: switch to GPT-6 Sol before Apr 1, 2027.
The facts
| Old | GPT-5.1 |
|---|---|
| Status | Retiring. Developer service shutdown Apr 1, 2027 |
| Replaced by | GPT-6 Sol |
| Official source | platform.openai.com |
| Last checked | Oct 28, 2026 |
The replacement at a glance
| GPT-6 Sol | |
|---|---|
| What it is | OpenAI model |
| Made by | OpenAI |
| Price | Developer price: $2 in and $10 out per million tokens |
| Good at | Reads up to 1,050,000 tokens at once; Reads: text, image, PDFs |
| Where it runs | ChatGPT Plus/Pro |
| Status | Current. OpenAI's named replacement for gpt-5.1, gpt-5.3-codex |
| Sources | platform.openai.com · chatgpt.com · models.dev |
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Questions people ask
What replaces GPT-5.1?
GPT-6 Sol. OpenAI names it as the replacement, and GPT-5.1 shuts down in OpenAI's developer service on Apr 1, 2027.
What should I do if I used GPT-5.1?
Developers: switch to GPT-6 Sol before Apr 1, 2027.
Facts come from the companies' own pages, linked above, and were last checked Oct 28, 2026. Prices are US and can change. Picks are Hector's: no paid picks, sponsors always labeled, and no sponsorship from AI labs. Our policy.