Model prices / OpenAI / GPT-5.1
GPT-5.1
OpenAI · released 2025-11-13
The official API price of GPT-5.1 is $1.25 per 1M input tokens and $10 per 1M output tokens (as of 2026-11-12). Context window: 400K tokens, up to 128K output tokens per request. 31 providers sell it. The lowest is OpenCode: $1.07 input, $8.5 output.
Price by providerUSD per 1M tokens
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
| OpenAIOfficialgpt-5.1 | $1.25 | $10 | $0.125 | Official | Official docs |
 OpenCodeLowestgpt-5.1 | $1.07 | $8.5 | $0.107 | Lowest | Official docs |
 Poeopenai/ | $1.1364 | $9.0909 | $0.1136 | Official docs | |
JJiekou.AIgpt-5.1 | $1.1875 | $9.5 | $0.1187 | Official docs | |
3302.AIgpt-5.1 | $1.25 | $10 | — | Official docs | |
AAbacusgpt-5.1 | $1.25 | $10 | $0.125 | Official docs | |
 AIHubMixgpt-5.1 | $1.25 | $10 | $0.125 | Official docs | |
 AI/ML APIopenai/ | $1.25 | $10 | $0.125 | Official docs | |
 Cloudflare AI Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
DDatabricksdatabricks-gpt-5-1 | $1.25 | $10 | $0.125 | Official docs | |
EEden AIopenai/ | $1.25 | $10 | $0.125 | Official docs | |
HHeliconegpt-5.1 | $1.25 | $10 | $0.125 | Official docs |
21 more listings
| Provider | Input | Output | Cached | Notes | |
|---|---|---|---|---|---|
IImpossiblopenai/ | $1.25 | $10 | $0.125 | Official docs | |
KKilo Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
 DevPass (LLM Gateway)gpt-5.1 | $1.25 | $10 | $0.125 | Official docs | |
LLLM Gatewayazure/ | $1.25 | $10 | $0.125 | Official docs | |
LLLM Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
MMerge Gatewayopenai/ | $1.25 | $10 | $0.125 | Official docs | |
NNanoGPTopenai/ | $1.25 | $10 | $0.125 | Official docs | |
NNanoGPTopenai/ | $1.25 | $10 | $0.125 | Official docs | |
NNEAR AI Cloudopenai/ | $1.25 | $10 | $0.125 | Official docs | |
NNeongpt-5-1 | $1.25 | $10 | $0.125 | Official docs | |
OOfoxopenai/ | $1.25 | $10 | $0.13 | Official docs | |
 OpenRouteropenai/ | $1.25 | $10 | $0.125 | Official docs | |
OOrcaRouteropenai/ | $1.25 | $10 | $0.125 | Official docs | |
PPrime Inferenceopenai/ | $1.25 | $10 | — | Official docs | |
SSnowflake Cortexopenai-gpt-5.1 | $1.25 | $10 | $0.13 | Official docs | |
 ZenMuxopenai/ | $1.25 | $10 | $0.125 | Official docs | |
CCortecsgpt-5.1 | $1.375 | $10.96 | $0.156 | Official docs | |
RRequestygpt-5.1@ | $1.375 | $11 | $0.1375 | Official docs | |
PPerplexity AgentDeprecatedopenai/ | $1.25 | $10 | $0.125 | Deprecated | Official docs |
GGitLab DuoDeprecatedduo-chat-gpt-5-1 | $0 | $0 | — | Deprecated | Official docs |
AAnyAPIopenai/ | — | — | — | Official docs |
Providers are those listed by models.dev. This site has not vetted them one by one; each provider's own page has the binding price.
About
Sharper GPT-5 generation for coding, product work, and tool-assisted tasks
Description from models.dev.
Specs
- Type
- Text
- Context
- 400K
- Max output
- 128K
- Input
- Text, Image
- Output
- Text
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Knowledge cutoff
- 2024-09-30
- Open weights
- No
- Released
- 2025-11-13
Source
Prices and specs come from models.dev (MIT licence), updated 2026-11-12. Each provider's name links to its official docs. A provider priced at 0 usually includes the model in a subscription; it is not necessarily a free API.