Very long inputs
Choose Command A
Command A reads up to 256k tokens per request, against 131k for gpt-oss-20b.
Command A vs gpt-oss-20b: price, context and capabilities
Choose Command A for very long inputs. Choose gpt-oss-20b for agentic coding, tool use and support agents, reasoning over long documents, self-hosting and data control and the latest release.
In short
- A price comparison is not possible: one of them has no comparable published price.
- Command A reads more per request: 256k tokens against 131k.
- gpt-oss-20b is the newer model (August 2025, against March 2025).
- Only Command A offers structured output.
- Only gpt-oss-20b offers reasoning, self-hostable.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Agentic coding
Choose gpt-oss-20b
gpt-oss-20b scores 10.6% on Terminal-Bench Hard, against 0.8% for Command A.
Tool use and support agents
Choose gpt-oss-20b
gpt-oss-20b scores 60.2% on τ²-Bench (agentic tool use), against 15.2% for Command A.
Reasoning over long documents
Choose gpt-oss-20b
gpt-oss-20b scores 34.7% on Long-context reasoning (AA-LCR), against 21.3% for Command A.
Self-hosting and data control
Choose gpt-oss-20b
gpt-oss-20b has open weights, so you can run it on your own servers; Command A is only available through its provider.
Latest release
Choose gpt-oss-20b
gpt-oss-20b is the newer release (August 2025, against March 2025 for Command A).
Specifications side by side
| Command A | gpt-oss-20b | |
|---|---|---|
| Provider | Cohere | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | No data | No data |
| Input | No data | No data |
| Output | No data | No data |
| Cached input | No data | No data |
| Context window | 256k | 131k |
| Max output | No data | 131k |
| Released | March 2025 | August 2025 |
| Knowledge cutoff | No data | June 2024 |
| Licence | Proprietary | Open weights |
| Capabilities | Tool calling, Structured output | Reasoning, Tool calling, Self-hostable |
| API model id | command-a-03-2025 | gpt-oss-20b |
Benchmarks side by side
Leader in bold.
| Benchmark | Command A | gpt-oss-20b |
|---|---|---|
| Terminal-Bench Hard | 0.8% | 10.6% |
| GPQA Diamond | 52.7% | 68.8% |
| Humanity's Last Exam | 4% | 11% |
| IFBench (instruction following) | 36.5% | 65.1% |
| τ²-Bench (agentic tool use) | 15.2% | 60.2% |
| Long-context reasoning (AA-LCR) | 21.3% | 34.7% |
| Intelligence Index | No data | 9 |
| SciCode | No data | 38.9% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Command A or gpt-oss-20b?
Choose Command A for very long inputs. Choose gpt-oss-20b for agentic coding, tool use and support agents, reasoning over long documents, self-hosting and data control and the latest release.
Which is cheaper, Command A or gpt-oss-20b?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, Command A or gpt-oss-20b?
Command A reads more per request: 256k tokens against 131k.
What is the difference between Command A and gpt-oss-20b?
Command A is made by Cohere and gpt-oss-20b by OpenAI. A price comparison is not possible: one of them has no comparable published price. Command A reads more per request: 256k tokens against 131k. gpt-oss-20b is the newer model (August 2025, against March 2025). Only Command A offers structured output. Only gpt-oss-20b offers reasoning, self-hostable.
Which is better for coding, Command A or gpt-oss-20b?
gpt-oss-20b scores 10.6% on Terminal-Bench Hard, against 0.8% for Command A.
Which is newer, Command A or gpt-oss-20b?
gpt-oss-20b was released on August 2025 and Command A on March 2025.