All models

OpenAI

GPT-5.1 balanced

openai/gpt-5-1

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...

Input / 1M

$1.25

USD per million tokens

Output / 1M

$10.00

USD per million tokens

Est. cost / token

$0.000003438

$3.44 per 1M, 3:1 mix

Context window

272K

max output 128K

Major features

VisionBatchPDFCachingReasoningJSON schemaToolsWeb search

Task suitability (heuristic 1–5, not a benchmark)

  • coding4
  • reasoning4
  • math4
  • summarization4
  • extraction4
  • classification4
  • chat4
  • creative4
  • translation4
  • vision4
  • long context3
  • agentic4

Price history

RecordedInputOutputCachedSource
2026-11-05 03:20$1.25$10.00$0.13litellm+openrouter

A row is added whenever a sync detects a price change. Vendor pricing source

Pricing (USD per 1M tokens)

Input
$1.25
Output
$10.00
Cached input
$0.13
Batch input
$0.63
Batch output
$5.00
Blended (3:1)
$3.44

Details

Company
OpenAI
Version
5.1
Family
GPT
Released
2025-11-13
Parameters
Undisclosed
Max output
128K
Open weights
No
Inputs
file, image, text
Last synced
29 min ago