gpt-5.1-chat-latest API
About
Build advanced reasoning agents with gpt-5.1-chat-latest, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.25/1M input and $10.00/1M output tokens, native tool calling support. Access gpt-5.1-chat-latest via the 302.AI API with up to 16K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
128K
Tokens
Input Limit
128K
Tokens
Max Output
16K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.25
Output
$10.00
Frequently Asked Questions
gpt-5.1-chat-latest by 302.AI costs $1.25 per 1M input tokens and $10.00 per 1M output tokens.
Model Details
ID
gpt-5.1-chat-latest
Provider
302.AIFamily
gpt-codex
Release Date
Nov 14, 2025
Knowledge Cutoff
Sep 30, 2024
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
302AI_API_KEY
API Base URL
https://api.302.ai/v1