OA

GPT-5.1

by OpenAIWebsite
generalreasoningbudget

Input

$0.63/MTok

Output

$5.00/MTok

Cached Input

$0.06/MTok

with caching

Batch Input

$0.32/MTok

batch API

Specifications

Context Window

400K context

Max Output

32K tokens

Caching

Supported

Batch API

Supported

Vision

Supported

Tool Use

Supported

Cost Examples

Single chat message

500 input + 300 output tokens

$0.0018/request

Code review

5,000 input + 2,000 output tokens

$0.01/request

Document summary

50,000 input + 1,000 output tokens

$0.04/request

100 requests/day

1,000 input + 500 output × 30 days

$9.39/month

Compare GPT-5.1

See how GPT-5.1 stacks up against DeepSeek Reasoner (V3.2) and DeepSeek R1.