Very long inputs
Choose Command A Reasoning
Command A Reasoning reads up to 256k tokens per request, against 128k for GPT-5 Chat.
Command A Reasoning vs GPT-5 Chat: price, context and capabilities
Choose Command A Reasoning for very long inputs. Choose GPT-5 Chat for images as input.
In short
- A price comparison is not possible: one of them has no comparable published price.
- Command A Reasoning reads more per request: 256k tokens against 128k.
- Only GPT-5 Chat offers vision, structured output, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Images as input
Choose GPT-5 Chat
GPT-5 Chat accepts images as input; Command A Reasoning does not.
Specifications side by side
| Command A Reasoning | GPT-5 Chat | |
|---|---|---|
| Provider | Cohere | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| 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 | 128k |
| Max output | No data | 16k |
| Released | August 2025 | Aug 7, 2025 |
| Knowledge cutoff | No data | September 2024 |
| Licence | Proprietary | Proprietary |
| Capabilities | Reasoning, Tool calling | Vision, Reasoning, Tool calling, Structured output, Batch API |
| API model id | command-a-reasoning-08-2025 | gpt-5-chat-latest |
Frequently asked questions
Should I choose Command A Reasoning or GPT-5 Chat?
Choose Command A Reasoning for very long inputs. Choose GPT-5 Chat for images as input.
Which is cheaper, Command A Reasoning or GPT-5 Chat?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, Command A Reasoning or GPT-5 Chat?
Command A Reasoning reads more per request: 256k tokens against 128k.
What is the difference between Command A Reasoning and GPT-5 Chat?
Command A Reasoning is made by Cohere and GPT-5 Chat by OpenAI. A price comparison is not possible: one of them has no comparable published price. Command A Reasoning reads more per request: 256k tokens against 128k. Only GPT-5 Chat offers vision, structured output, batch api.