Loading...
Loading...
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 Sonnet 4 is 30ms faster than Anthropic: Claude Sonnet 4.5
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
Anthropic: Claude Sonnet 4 is 176% faster
| Spec | Anthropic: Claude Sonnet 4 | Anthropic: Claude Sonnet 4.5 |
|---|---|---|
| Provider | anthropic | anthropic |
| Input price / 1M tokens | Free | Free |
| Output price / 1M tokens | — | — |
| Context window | 1000k tokens | 1000k tokens |
| Latency (p50) | 17ms | 47ms |
| Best benchmark score | — | — |
| Open source | No | No |
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Want to swap in a different model or estimate monthly costs?
Help my team choose the right model
Not sure which model fits your workload, budget, and latency requirements? Get a tailored recommendation.