Models.dev

An open-source database of AI models

GPT-5.1 Chat

Chat-tuned GPT-5.1 for polished assistants, writing, and product conversations

openai/gpt-5.1-chat-latest
Lab
OpenAI
Family
gpt-codex
Providers
3
Context
128,000
Output limit
16,384
Knowledge
2024-09
Release
2025-11-13
Updated
2025-11-13
Weights
Closed
Input
Output types
Capabilities
tools, reasoning, structured

Providers

3
Provider Lab Model ID Context Output Price Reasoning Tool Call Structured Temperature
Merge GatewayOpenAIopenai/gpt-5.1-chat-latest128,00016,384$1.25 / $10.00YesYesYesNo
OpenAIOpenAIgpt-5.1-chat-latest128,00016,384$1.25 / $10.00YesYesYesNo
OrcaRouterOpenAIopenai/gpt-5.1-chat-latest128,00016,384$1.25 / $10.00YesYesYesNo
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How to use

Models.dev is a comprehensive open-source database of AI model specifications, pricing, and features.

The homepage starts with provider-agnostic model metadata. Model pages list the providers serving that model; provider pages list every model available from that provider; lab pages group canonical models by author.

API

You can access provider data, provider-agnostic model metadata, or the combined catalog through JSON endpoints.

Logos

Provider logos are available at /logos/{provider}.svg where {provider} is the provider ID. Lab logos are available at /logos/labs/{lab}.svg.

SDK

Use the SDK to query the API from your app. It's type-safe and exports the latest snapshot for offline use.

Contribute

The data is stored in GitHub as TOML files organized by provider and canonical model.