OpenAI: gpt-oss-20b (free)openai
Bottom Line
OpenAI: gpt-oss-20b (free): Free/1M input, Free/1M output, 131K context. gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
API Pricing (per 1M tokens)
| Input | Free |
| Output | Free |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $0.00 |
Specs & Performance
| Context Length | 131K |
| Max Output | 33K |
| Intelligence | — |
| Coding | — |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | — |
| Input / Output Modalities | text → text |
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FAQ
How much does the OpenAI: gpt-oss-20b (free) API cost?
OpenAI: gpt-oss-20b (free) costs Free/1M input tokens and Free/1M output tokens. Blended cost at a 3:1 ratio is about $0.00/1M tokens.
What is the context window of OpenAI: gpt-oss-20b (free)?
OpenAI: gpt-oss-20b (free) supports a 131K token context window with up to 33K output tokens.
Is OpenAI: gpt-oss-20b (free) worth it?
OpenAI: gpt-oss-20b (free) has a CPS grade of — (score —), intelligence index —, coding index —. Use the compare page to benchmark against rivals.