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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
⚡Anthropic: Claude Opus 4 is 2ms faster than Anthropic: Claude Opus 4.1
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
Anthropic: Claude Opus 4 is 13% faster
| Spec | Anthropic: Claude Opus 4 | Anthropic: Claude Opus 4.1 |
|---|---|---|
| Provider | anthropic | anthropic |
| Input price / 1M tokens | Free | Free |
| Output price / 1M tokens | — | — |
| Context window | 200k tokens | 200k tokens |
| Latency (p50) | 15ms | 17ms |
| Best benchmark score | — | — |
| Open source | No | No |
Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...
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