OpenAI

GPT-5.1

gpt-5.1

A sharper GPT-5 generation for coding, product work, and tool-assisted tasks.

Sharper GPT-5 generation for coding, product work, and tool-assisted tasks

400K context400K context
Released2025-11-13
Relays13 sites
code generationtool usereasoninglong context

Model information

Model ID
gpt-5.1
Context
400K
Max input
272K
Max output
128K
Knowledge cutoff
2024-09-30
Open weights
Not supported
License
-
Release date
2025-11-13

Input

Text: SupportedImage: SupportedAudio: Not supportedVideo: Not supportedPDF: Not supportedFile: Supported

Output

Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported

API capabilities

Reasoning: SupportedTool call: SupportedStructured output: UnknownTemperature: Supported

OpenAI Official Pricing

CNY
Updated: 2026-10-04T22:55:12.912+08:00

Input

~¥8.362/ 1M tokens

Output

~¥66.893/ 1M tokens

Cache read

~¥0.8362/ 1M tokens

Relay Comparison

Compare token, per-request, or per-second pricing by relay channel.

How should GPT-5.1 relay pricing be compared?

This GPT-5.1 pricing page compares official pricing with public prices from 13 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: 10/23/2026, 08:14.

Data sources
Public price catalogs, official pricing records, and monitoring results.
Metric definitions
Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
Risk note
Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.