# Claude 4.1 Opus vs Claude 4 Sonnet

> Side-by-side benchmark comparison for Claude 4.1 Opus and Claude 4 Sonnet across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-4-1-opus-vs-claude-4-sonnet
- Last updated: September 10, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude 4.1 Opus and Claude 4 Sonnet share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Claude 4 Sonnet has the lower published output-token price.

## Model Snapshot

| Property | Claude 4.1 Opus | Claude 4 Sonnet |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 200K |
| Independent public score (not head-to-head) | 42.02 | 39.41 |
| Benchmarks Covered | 2 | 3 |
| Pricing (input/output) | $15.00 / $75.00 | $3.00 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: 42.9 (Estimated · #102/152)
- Claude 4 Sonnet public-lane score: 40 (Estimated · #116/152)

| Benchmark | Claude 4.1 Opus | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 21.9% | 18.4% | Claude 4.1 Opus |
| Gert Labs | Coming soon | 39.66% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: 42.9 (Estimated · #103/151)
- Claude 4 Sonnet public-lane score: 40 (Estimated · #117/151)

| Benchmark | Claude 4.1 Opus | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 74.5% | 72.7% | Claude 4.1 Opus |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 51.9 (Unranked · 1 rankable row)

### Reasoning

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 51.3 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 39.4 (Estimated · #136/183)

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 53.6 (#77/123)

## FAQ

### Is there enough evidence to pick between Claude 4.1 Opus and Claude 4 Sonnet?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude 4.1 Opus vs Claude 4.1 Opus Thinking](/compare/claude-4-1-opus-vs-claude-4-1-opus-thinking)
- [Claude 4 Sonnet vs Claude 4.1 Opus Thinking](/compare/claude-4-1-opus-thinking-vs-claude-4-sonnet)
- [Claude 4.1 Opus vs Claude Fable 5.1](/compare/claude-4-1-opus-vs-claude-fable-5-1)
- [Claude 4 Sonnet vs Claude Fable 5.1](/compare/claude-4-sonnet-vs-claude-fable-5-1)

## Explore More

- [Claude 4.1 Opus profile](/models/claude-4-1-opus)
- [Claude 4 Sonnet profile](/models/claude-4-sonnet)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)