OpenAI
GPT-5.1legacy
Iterative GPT-5 update with improved chat behaviour.
Intelligence
42.3 #400
Top 54% tier
Output Speed
60 t/s
ITL 16.7 ms/tok
Blended price (3:1)
$4.375 /1M
In $2.5/M · Out $10/M
Context
400K
≈ 1,000 A4 pages · max out 8,192
Quality Domain Radar
6-Axis Frontier Evaluation vs Category Average & Flagship
GPT-5.1
Claude Mythos Preview (#1)
Average (68)
Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.
API deployment
Compare hosts & latency
Throughput, TTFT and cache pricing across Groq, Cerebras, Together, DeepInfra, Fireworks, Bedrock and Azure.
GroqCerebrasTogether AIDeepInfraFireworks AIAWS BedrockAzure AI
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Cerebras
Together AI
DeepInfra
Fireworks AI
AWS Bedrock
Azure AIScores by Source
Category Scores
Benchmark Results
Model Details
Release date
Oct 8, 2025
Parameters
Not disclosed
License
Proprietary
Context Window
400,000 tokens
Input Price
$2.5/M
Output Price
$10/M
Output Speed
60 t/s
Time to First Token
—
Estimated monthly bill
Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...
Cite & embed
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@misc{llmpodium2026gpt51,
title = {Benchmark Analysis and Intelligence Evaluation of GPT-5.1},
author = {LLMPodium Research},
year = {2026},
url = {https://llmpodium.com/models/gpt-5-1}
}Embed Score Badge
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