Strong coding and instruction-following for agents.
Model details →Claude 3.7 Sonnet vs Claude Opus 4
Claude Opus 4 wins on 1 of 6 axes — pricing and capability skew in its favour for most workloads.
Deprecated Opus 4 snapshot — migrate to Opus 4.7 per Anthropic guidance.
Model details →Side-by-side comparison
| Capability | Claude 3.7 Sonnet | Claude Opus 4 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 200K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | Custom | Custom | — |
| Output price (per 1M) Cost per million output tokens billed by the provider. | Custom | Custom | — |
| Tool / function calling First-class support for emitting structured tool calls. | — | — | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 Claude Opus 4 |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | — | — | Tie |
Frequently asked questions
Is Claude 3.7 Sonnet better than Claude Opus 4?
Claude Opus 4 wins on 1 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Claude 3.7 Sonnet and Claude Opus 4?
Input: Custom vs Custom per 1M tokens. Output: Custom vs Custom per 1M tokens.
What context windows do Claude 3.7 Sonnet and Claude Opus 4 support?
Claude 3.7 Sonnet supports up to 200K tokens. Claude Opus 4 supports up to 200K tokens.
Do both Claude 3.7 Sonnet and Claude Opus 4 support tool calling?
Claude 3.7 Sonnet: not advertised. Claude Opus 4: not advertised.