AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Anthropic
Claude Opus 4 is a model from Anthropic, released on May 22, 2025 alongside Claude Sonnet 4, with both near-instant and extended-thinking modes.
Model B — Cohere
Command A is a 111B-parameter model from Cohere, released on March 13, 2025, for tool use, retrieval-augmented generation (RAG), agents and multilingual use. It has a 256K-token context length and runs on two A100 or H100 GPUs.
| Property | Claude Opus 4 | Command A |
|---|---|---|
| Released | May 22, 2025 | Mar 13, 2025 |
| Developer | Anthropic | Cohere |
| Type | reasoning | llm |
| License | proprietary | open-weight |
| Context window | — | 256,000 |
| Parameters | — | 111B |
| Developer status | Retired | — |
| Input $/M tokens | — | $2.50 |
| Output $/M tokens | — | $10.00 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
Programmatic access available at /api/ai/compare?a=claude-4-opus&b=command-a. CORS is open. Citation guidance: /about/editorial-process.