# Claude Sonnet 5 vs Sonar Pro

> Claude Sonnet 5 has enough public results to be ranked (#29); Sonar Pro does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-vs-sonar-pro
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both.
- Claude Sonnet 5 is cheaper at $2 / $10 per million input/output tokens, against $3 / $15 for Sonar Pro.
- Claude Sonnet 5 accepts more context: 1M tokens versus 200K.

## Snapshot

| | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| Provider | Anthropic | Perplexity |
| Noometry Index | 54.6 | — |
| Rank | 29 | — |
| Context | 1M | 200K |
| Input $/M | $2 | $3 |
| Output $/M | $10 | $15 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 5: 55.5 (#26)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1541 | — |
| SciCode | 54.3% | — |
| GSO | 37.3% | — |
| WeirdML | 68.8% | — |
| LMArena Coding | 1483 | — |
| ALE-Bench | 1,463 | — |

## Agentic & Tool Use

- Claude Sonnet 5: 42.8 (#18)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Search | 1194 | 1130 |
| APEX-Agents | 54.5% | — |
| GBAEval | 65.3% | — |
| Vending-Bench 2 | 6,378 | — |

## Reasoning

- Claude Sonnet 5: 49.1 (#39)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| SimpleBench | 60.6% | — |
| NYT Connections (extended) | 75.1% | — |
| CritPt | 16.9% | — |
| Chess Puzzles | 35% | — |
| LMArena Hard Prompts | 1461 | — |
| Mystery Game Puzzles | 35% | — |
| DTBench | 92.5% | — |
| LMCA | 50% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 156.21 | — |
| ForecastBench | 61.1 | — |

## Math

- Claude Sonnet 5: 66.2 (#27)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| OTIS Mock AIME 2024-2025 | 94.7% | — |
| ProofBench | 77% | — |
| LMArena Math | 1467 | — |

## Knowledge

- Claude Sonnet 5: 55.6 (#47)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| GPQA Diamond | 90.5% | — |
| SimpleQA Verified | 33.7% | — |
| LMArena Expert | 1490 | — |

## Multimodal

- Claude Sonnet 5: 42.4 (#31)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Vision | 1274 | — |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |

## Multilingual

- Claude Sonnet 5: 53.8 (#55)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Non-English | 1431 | — |
| LMArena Chinese | 1477 | — |
| LMArena French | 1460 | — |
| LMArena German | 1440 | — |
| LMArena Japanese | 1422 | — |
| LMArena Korean | 1411 | — |
| LMArena Russian | 1451 | — |
| LMArena Spanish | 1437 | — |

## Instruction Following

- Claude Sonnet 5: 76.3 (#41)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Instruction Following | 1452 | — |

## Long Context

- Claude Sonnet 5: 44.8 (#55)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Longer Query | 1463 | — |

## Writing & Preference

- Claude Sonnet 5: 69.2 (#25)
- Sonar Pro: —

| Benchmark | Claude Sonnet 5 | Sonar Pro |
|---|---|---|
| LMArena Text | 1442 | — |
| LMArena Creative Writing | 1416 | — |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |
| LMArena Multi-Turn | 1454 | — |

## FAQ

### Is Claude Sonnet 5 better than Sonar Pro?

Claude Sonnet 5 has enough public results to be ranked (#29); Sonar Pro does not yet, so treat this comparison as directional.

### Which is cheaper, Claude Sonnet 5 or Sonar Pro?

Claude Sonnet 5 is cheaper. It lists at $2 per million input tokens and $10 per million output tokens; Sonar Pro lists at $3 and $15.

### Which has the bigger context window?

Claude Sonnet 5 does, with 1M tokens against 200K.

### How many benchmarks do Claude Sonnet 5 and Sonar Pro share?

1 benchmark has published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Sonar Pro has 1.