GPT-OSS 20B

Free

openai/gpt-oss-20b

Text · 131K context · Apr 2025 · 24 upstreams

GPT-OSS 20B is OpenAI's open-weight reasoning model for agentic tasks and low-latency edge use, under Apache-2.0. It is a mixture-of-experts model with 20.9B total and 3.6B active parameters and a 131,072-token context. It runs within 16 GB of memory with MXFP4 weights.

context: 131K
input / 1M: $0
output / 1M: $0
routes: 24
speed, 24h: No data yet

Upstreams

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Benchmarks

GPQA Diamond: 68.8%
LiveCodeBench: 77.7%
AIME: 89.3%
HLE: 9.8%

Quick start

curl

curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "openai/gpt-oss-20b",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'

Details

Owner: OpenAI
Kind: Chat
Released: Apr 2025
Context: 131K
Data policy: Provider retention
Endpoint: /api/v1/chat/completions

Low-latency, local or specialized use
Agentic tasks with function calls
Fine-tuning on consumer hardware

Upstreams and pricing

				Access
Credits — billed by AnyRouter
Free	0	0	131K	Included
Your own key (BYOK) — provider bills you, $0 AnyRouter fee
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	0	0	20K
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Which key answers this model

Your request → your own keys first (none added yet). The provider bills you; AnyRouter adds $0.

If none of your keys can serve it → the shared pool: keys other people donated. You pay the list price from AnyRouter credits. A donor whose key stays valid pays nothing here.

Pool for this model: not covered yet.