openai/gpt-oss-20b:free by OpenRouter

No longer free

OpenRouter no longer serves openai/gpt-oss-20b:free for free (checked Nov 3, 2026). Requests return a 404 that points to the paid ID openai/gpt-oss-20b, which had 11 endpoints, from $0.01 per 1M input tokens and $0.043 per 1M output tokens.

See which OpenRouter free models still work, or browse the models that are free today.

Status
No longer free
Free limits
No longer free (checked Nov 3, 2026)
Modality
text
Credit card
Not required
Commercial use
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Context window
131,000 tokens
Model ID
openai/gpt-oss-20b:free
Base URL
https://openrouter.ai/api/v1
Checked
Nov 3, 2026

Benchmarks

LMArena text Elo
1288 · LMArena, Nov 11 2026
Tested as gpt-oss-20b · leaderboard published 2026-11-09
LMArena text rank
#264 of 421 · LMArena, Nov 11 2026
Tested as gpt-oss-20b

Numbers are copied from the linked public leaderboards for this exact model and version. The free endpoint can run a different reasoning setting or quantization than the tested one.

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Frequently asked

Is openai/gpt-oss-20b:free still free?

No. OpenRouter no longer serves openai/gpt-oss-20b:free for free (checked Nov 3, 2026). Requests return a 404 that points to the paid ID openai/gpt-oss-20b, which had 11 endpoints, from $0.01 per 1M input tokens and $0.043 per 1M output tokens.

What should I use instead of openai/gpt-oss-20b:free?

Use the paid ID if the price fits, or move to a model that is still free and keep a paid fallback behind it. Our check of every OpenRouter :free ID lists what still answers today and what each dead ID costs on its paid slug: https://www.ayautomate.com/blog/openrouter-free-models

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