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Last scan 2026-08-28 Models tracked 237 Providers 31 Cheapest paid Granite 4.0 H Micro $0.017/Mtok in Every price links to its source

GPT-5.1

by OpenAI

Current flagship mid tier
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Availability: OpenAI still prices the bare gpt-5.1 alias per token on its own rate card and announces no shutdown date for it. Its sibling SKUs gpt-5.1-codex, gpt-5.1-codex-max, gpt-5.1-codex-mini and gpt-5.1-chat-latest were all shut down on 2026-07-23 in favour of the GPT-5.6 line; the base alias outlived them and remains both on the rate card and on its own model page, so this row carries no shutdown date. Checked against OpenAI's deprecations page on 2026-08-24.

Today's price · per 1M tokens

Input

$1.25

per 1M tokens

Output

$10.00

per 1M tokens

Blended

$3.44

blended $/1M — 3:1 weighted input:output

Cached input

$0.125

10% of input — prompt caching

Source: official OpenAI pricing · read Aug 24, 2026 MODELPRICEWATCH.COM · 2026-08-28

Price receipt

We read OpenAI's own pricing page on Aug 24, 2026 and found gpt-5.1 listed with a price on the same row — that read is where the number above comes from, recorded as a new model. We keep the page text we read; its content hash is 0359f17f7e.

Overview

OpenAI's late-2025 flagship for coding and agentic tasks, with configurable reasoning and non-reasoning effort. 400K context window, 128K max output tokens, text + image input, text output, September 2024 knowledge cutoff. Superseded by the GPT-5.2 through GPT-5.6 lines but still sold first-party at its own rate, and the cheapest per-token flagship OpenAI currently lists.

Capabilities

struck through = not supported
Input 2/5
Text ✓ Image ✓ Audio Video PDF
Output 1/5
Text ✓ Image Audio Video Embedding
Features 4/9
Prompt caching ✓ Reasoning ✓ Coding Fast inference Long context ✓ Open weights Multimodal ✓ Web search Realtime

Benchmark performance

accuracy % · higher is better
Percentile vs all tracked models 50.7th4 independent measurements
Percentile per $/Mtok 14.7

We hold no per-benchmark accuracy scores for this model yet, so it has no accuracy average. That is a gap in our coverage, not a sign the model is untested — independent evaluators often publish a composite index for a new model long before releasing its per-benchmark numbers. The percentile above is its standing across the independent composites below.

Independent composite scores
  • AA Intelligence Index: 37.5 (Artificial Analysis composite across reasoning, knowledge and coding evals)
  • AA Agentic Index: 21.6 (Tool use, planning, autonomy)
  • AA-Omniscience Index: 5.4 (−100–100)
  • LMSYS Chatbot Arena: 1438.9 ELO (Human preference)
How it stacks up
  • Ranks #71 of 170 comparably-measured models by percentile score, across 4 independent measurements
  • Ranks #134 of 170 comparably-tested models by normalized performance per dollar

Source: Artificial Analysis · updated Aug 24, 2026 · See full rankings →

Specifications

Provider
OpenAI
Context window
400K tokens
Modality
text, image
Parameters
Proprietary
Open source
No — proprietary
Released
Nov 13, 2025
Status
Current
Last updated
Aug 24, 2026
Tags
reasoningmultimodalflagship

Availability verified: Aug 24, 2026 — listed on OpenAI's own page

Try on OpenAI Official pricing page