OpenAI
GPT-oss-20BOpen
Compact open-weights model from OpenAI for fast, cheap inference.
Intelligence
22.0 #528
Top 72% tier
Output Speed
90 t/s
ITL 11.1 ms/tok
Blended price (3:1)
$0.088 /1M
In $0.05/M · Out $0.2/M
Context
131K
≈ 328 A4 pages · max out 8,192
Quality Domain Radar
6-Axis Frontier Evaluation vs Category Average & Flagship
GPT-oss-20B
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.
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Category Scores
Benchmark Results
Model Details
Release date
Apr 15, 2026
Parameters
20B
License
Open Weights
Context Window
131,000 tokens
Input Price
$0.05/M
Output Price
$0.2/M
Output Speed
90 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{llmpodium2026gptoss20b,
title = {Benchmark Analysis and Intelligence Evaluation of GPT-oss-20B},
author = {LLMPodium Research},
year = {2026},
url = {https://llmpodium.com/models/gpt-oss-20b}
}Embed Score Badge
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