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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 100% cheaper than Anthropic: Claude Opus 4.6 (Fast)
⚡Anthropic: Claude Opus 4.6 (Fast) is 15ms faster than Anthropic: Claude Opus 4
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | Anthropic: Claude Opus 4 | Anthropic: Claude Opus 4.6 (Fast) |
|---|---|---|
| Provider | anthropic | anthropic |
| Input price / 1M tokens | Free | $30.00 |
| Output price / 1M tokens | — | $150.00 |
| Context window | 200k tokens | 1000k tokens |
| Latency (p50) | 15ms | — |
| 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...
Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
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