ModelRefs / Claude Opus 4 vs Claude 3.7 Sonnet
Claude Opus 4 vs Claude 3.7 Sonnet
Claude Opus 4 vs Claude 3.7 Sonnet: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
Claude 3.7 Sonnet: Claude 3.7 Sonnet is Anthropic's February 2025 hybrid reasoning model, combining immediate answers with an optional extended thinking mode in a single model rather than two. Thinking can be budgeted by token count up to a 128,000-token output limit, across a 200,000-token context window. The claude-3-7-sonnet-20250219 snapshot was deprecated on 28 October 2025 and retired on Anthropic-operated platforms on 19 February 2026.
Claude Opus 4: Claude Opus 4 is Anthropic's May 2025 hybrid-reasoning model for complex coding, reasoning, multimodal analysis, and long-running agent workflows. The dated claude-opus-4-20250514 snapshot was retired on Anthropic-operated platforms on June 15, 2026 and is retained as a historical evaluation and migration reference.
Context window: Claude 3.7 Sonnet accepts up to 200,000 tokens, Claude Opus 4 up to 200,000. Confirm the limit for your specific deployment channel before relying on it.
Claude 3.7 Sonnet vs Claude Opus 4 at a glance
| Attribute | Claude 3.7 Sonnet | Claude Opus 4 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Released | 2025-02-24 | 2025-05-22 |
| Context window | 200,000 tokens | 200,000 tokens |
| Input price | $3/M tokens | $15/M tokens |
| Output price | $15/M tokens | $75/M tokens |
| Licence | Proprietary | Proprietary |
| Self-hostable | No, hosted only | No, hosted only |
| Modalities | text, vision | text, vision |
Benchmarks reported for both
| Benchmark | Claude 3.7 Sonnet | Claude Opus 4 | Reported |
|---|---|---|---|
| SWE-Bench Verified (resolved) | 63.7 | 72.5 | 2025-02-24 / 2025-05-22 |
Each row compares the same benchmark, the same reported metric, and the same task set. Scores are as published by their cited sources on the dates shown. Different runs still use different harnesses and prompts, so treat these as directional evidence rather than a head-to-head result.
Where they differ most
- Coding: Claude 3.7 Sonnet 64%, Claude Opus 4 60%. Claude 3.7 Sonnet leads on this dimension.
- Agentic: Claude 3.7 Sonnet 64%, Claude Opus 4 63%. Claude 3.7 Sonnet leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Claude Opus 4 vs Claude 3.7 Sonnet.
Frequently asked questions
Which is better, Claude Opus 4 or Claude 3.7 Sonnet?
Claude Opus 4 and Claude 3.7 Sonnet target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is Claude Opus 4 cheaper than Claude 3.7 Sonnet?
Compare $0.0150 vs $0.00300 on this page.