GPT-5.5 vs Command A Reasoning
Side-by-side specs, pricing and capabilities. Both models run on Clade under one subscription, so you can switch between them in the same conversation.
GPT-5.5 comes from OpenAI and Command A Reasoning from Cohere. The practical difference for most people is context, price, and which input types each one accepts.
GPT-5.5 holds more in a single conversation — 1.1M tokens against 256K — which matters for long documents and large codebases.
| Specification | GPT-5.5 | Command A Reasoning |
|---|---|---|
| Provider | OpenAI | Cohere |
| Model ID | gpt-5.5-2026-04-23 | command-a-reasoning-08-2025 |
| Context window | 1.1M | 256K |
| Max output | — | 32K |
| Input price | $5.00 / 1M tokens | $5.00 / 1M tokens |
| Output price | $30.00 / 1M tokens | $20.00 / 1M tokens |
| Knowledge cutoff | — | — |
| Input types | text, image, file | text |
| Output types | text, image | text |
| Plan | Premium | Premium |
Which should you use?
Pick GPT-5.5 when…
- You need the larger context window — 1.1M against 256K.
- You need image and file input, which the other model does not accept.
Pick Command A Reasoning when…
- You want longer single responses — up to 32K output tokens.
Related comparisons
Try both on Clade
You do not have to choose. One Clade subscription gives you GPT-5.5, Command A Reasoning, and every other model on the platform.