Deprecated on Jun 29, 2026. 2 providers still list it at the prices below.
Context
112K
Max output
16K
Serving providers
2
Cheapest input
$1.25 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.
Pricing by serving provider
standard tier · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AzureCheapest | $1.25 | $10.00 | 1 | |||||||||||||
Standardazure/gpt-5.1-chat
| ||||||||||||||||
| OpenRouter | $1.25 | $10.00 | 1 | |||||||||||||
| ||||||||||||||||
Price history
listed seller prices, input and output per 1M tokens Input Output
Cost calculator
estimate your monthly spend on this model$1,050
estimated / month
Model IDs
copy the exact identifier for your platformopenai/gpt-5.1-chatazure/gpt-5.1-chat
Frequently asked questions
GPT 5.1 Chat pricing, context and availabilityIs GPT 5.1 Chat still available?
GPT 5.1 Chat was deprecated on 2026-06-29, but 2 serving providers still list it.
How much does GPT 5.1 Chat cost?
GPT 5.1 Chat costs $1.25 per 1M input tokens from Azure, and $10.00 per 1M output tokens from Azure.
What is the context window of GPT 5.1 Chat?
GPT 5.1 Chat accepts up to 112K tokens of context and can return up to 16K output tokens.
Which providers serve GPT 5.1 Chat?
GPT 5.1 Chat is available from 2 serving providers, each with its own pricing and model ID. Azure is currently the cheapest.
What can GPT 5.1 Chat do?
GPT 5.1 Chat supports tool use, reasoning, prompt caching and structured output.
Other OpenAI models
compare pricing across the OpenAI lineup Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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