This model was retired on 2026-07-23. The pricing below is the last-known rate, kept for migration reference.
GPT 5.1 Chat LatestDeprecated
VisionReasoningPrompt cachingStructured outputWeb search
Context
128K
Max output
16K
Serving providers
1
Cheapest input
$1.25 /1M
Prices are on-demand list rates. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.
Pricing by serving provider
last-known · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OpenAI | $1.25 | $10.00 | 1 | |||||||||||||||||||||
| ||||||||||||||||||||||||
Price history
input + output $/1M since we started tracking Input Output
Cost calculator
estimate your monthly spend on this model$1,050
estimated / month
Model IDs
copy the exact identifier for your platformgpt-5.1-chat-latest
Frequently asked questions
GPT 5.1 Chat Latest pricing, context and availabilityIs GPT 5.1 Chat Latest still available?
GPT 5.1 Chat Latest was retired on 2026-07-23. The pricing on this page is the last-known rate, kept for migration reference.
How much did GPT 5.1 Chat Latest cost?
GPT 5.1 Chat Latest's last-known pricing, before it was retired on 2026-07-23, was $1.25 per 1M input tokens and $10.00 per 1M output tokens.
What was the context window of GPT 5.1 Chat Latest?
GPT 5.1 Chat Latest had a 128K token context window and could return up to 16K output tokens.
What could GPT 5.1 Chat Latest do?
GPT 5.1 Chat Latest supported image input (vision), reasoning, prompt caching, structured output and web search.
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