Model · checked 2026-08-21
At a glance
What it's for
Best for: Private local assistant, reasoning with tool support, and low-cost hosted routes.
Not ideal for: Multimodal work.
Role: Small open-weight reasoning/tool model
Ways to use this model
Each row is a separate provider route, plan, or model download. A dash means the fact is unknown, never free.
Swipe sideways to see price, availability, build, and comparison actions.
| Plan or version | Route or download | Provider | Delivery | Source identity | Price coverage | Availability | Verified | Build / compare |
|---|---|---|---|---|---|---|---|---|
| GPT-OSS 20B | GPT-OSS 20B through OpenRouter | OpenRouter | Hosted API | openai/gpt-oss-20b | $0.03 / $0.13 per M | available | 2026-08-21 | Checking fit…Compare |
Specifications
Swipe sideways to see every specification, source, and verification date.
| Specification | Value | Source | Verified |
|---|---|---|---|
| API format | OpenAI | OpenRouter | 2026-07-06 |
| Context window | 131072 | OpenRouter | 2026-07-06 |
| Total parameters | 21B | OpenAI official gpt-oss-20b model documentation | 2026-08-22 |
| Active parameters | 3.6B | OpenAI official gpt-oss-20b model documentation | 2026-08-22 |
| License | Apache License 2.0 | OpenAI official gpt-oss-20b model documentation | 2026-08-22 |
| Restricted access | No | OpenRouter | 2026-07-06 |
| Capabilities | Tools, Thinking | OpenRouter | 2026-07-06 |
| Execution Paths | api, self_host | OpenRouter | 2026-07-06 |
Price evidence
| Type | USD | Basis | Conditions | Source | Verified | Freshness |
|---|---|---|---|---|---|---|
| per_million_in | $0.03 | required · verified | OpenRouter default price-weighted routing observation; this pair matched the CoreWeave FP4 GPT-OSS 20B endpoint on 2026-07-29, but the actual routed provider and billed rate can vary with availability, quantization, and routing preferences. | OpenRouter GPT-OSS 20B routing price row | 2026-08-21 | vendor · 31d |
| per_million_out | $0.13 | required · verified | OpenRouter default price-weighted routing observation; this pair matched the CoreWeave FP4 GPT-OSS 20B endpoint on 2026-07-29, but the actual routed provider and billed rate can vary with availability, quantization, and routing preferences. | OpenRouter GPT-OSS 20B routing price row | 2026-08-21 | vendor · 31d |
Cost at three usage tiers
| A few questions and small tasks each day. | $0.30/mo |
| Daily use, plus some scheduled tasks. | $0.99/mo |
| Working for you most of the day, including web tasks. | $2.97/mo |
Token cost only; add a host for the full-stack estimate.