ModelsOpenAI
gpt-oss-20b
Context
131.1K
tokens
Released
Aug 5, 2025
on OpenRouter
Token share
0.2%
OpenRouter · Aug 16, 2026
Pricing
Price per million tokens
Input $/MTok
$0.00100%
OpenRouter · Aug 1, 2026
Output $/MTok
$0.00100%
OpenRouter · Aug 1, 2026
| Source | Tracked slug | In $/MTok | Out $/MTok | Cache read | Cache write | Context | Effective | Last Δ (in) |
|---|---|---|---|---|---|---|---|---|
| OpenRouter | openai/gpt-oss-20b:free | $0.00 | $0.00 | — | — | 131.1K | Aug 1, 2026 | 100% |
| models.dev | cloudflare-ai-gateway/workers-ai/@cf/openai/gpt-oss-20b | $0.2 | $0.3 | — | — | 128K | Aug 1, 2026 | 566.7% |
latest tracked price per source · Δ = most recent input-price move within that source
2 sources tracking
Input $/MTok
Output $/MTok
per-source step lines · $/MTok
history since Jul 8, 2026
Specs
Context & availability
| Provider | OpenAI |
|---|---|
| Context window | 131.1K tokens |
| Listed on OpenRouter | Aug 5, 2025 |
| Tracked price sources | models.dev · OpenRouter |
| Hugging Face | openai/gpt-oss-20b |
| OpenRouter slugs | openai/gpt-oss-20b · openai/gpt-oss-20b:free |
source: OpenRouter model catalog + tracked price feeds
id: gpt-oss-20b
Usage
Share of OpenRouter tokens
90-day · to Aug 16, 2026
source: OpenRouter model rankings · share of tracked coding-token volume
0.2% on Aug 16, 2026
Benchmarks
Benchmark results
| Benchmark | Configuration | Score | Date | Source |
|---|---|---|---|---|
| AA Agentic Index | openai/gpt-oss-20b:free | 3.1index | — | or-embedded-aa |
| AA Agentic Index | openai/gpt-oss-20b | 3.1index | — | or-embedded-aa |
| AA Coding Index | openai/gpt-oss-20b:free | 20.7index | — | or-embedded-aa |
| AA Coding Index | openai/gpt-oss-20b | 20.7index | — | or-embedded-aa |
| AA Intelligence Index | openai/gpt-oss-20b:free | 14.9index | — | or-embedded-aa |
| AA Intelligence Index | openai/gpt-oss-20b | 14.9index | — | or-embedded-aa |
scores as published by each benchmark; configurations differ — compare within a row's benchmark only
Alternatives
Similar models
| # | Model | Tokens/day | 7d Δ | Head-to-head |
|---|---|---|---|---|
| 1 | DeepSeek V4 FlashDeepSeek | 2.7T | 35.1% | vs gpt-oss-20b |
| 2 | Hy3Tencent | 1.3T | 12.2% | vs gpt-oss-20b |
| 5 | Nemotron 3 UltraNVIDIA | 733B | 83.5% | vs gpt-oss-20b |
| 7 | GLM 5.2Z.ai | 533B | 1.3% | vs gpt-oss-20b |
ranked by OpenRouter usage-rank proximity
snapshot Aug 20, 2026
FAQ
gpt-oss-20b FAQ
- How much does gpt-oss-20b cost per token?
- gpt-oss-20b is priced at $0.00 per million input tokens and $0.00 per million output tokens, per OpenRouter as of Aug 1, 2026.
- What is gpt-oss-20b's context window?
- gpt-oss-20b supports a context window of up to 131.1K tokens, per OpenAI.
- How widely used is gpt-oss-20b?
- gpt-oss-20b accounts for about 0.2% of tracked OpenRouter coding-token volume as of Aug 16, 2026.
- What are the alternatives to gpt-oss-20b?
- By OpenRouter usage, comparable models include DeepSeek V4 Flash, Hy3, and Nemotron 3 Ultra. Side-by-side comparisons are linked in the alternatives table.
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