# GPT-6.1 Sol vs Sonar

> GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 38.5 on the Noometry Index. Sonar costs 4.0× less per token, which makes it the better buy when GPT-6.1 Sol's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-6-1-sol-vs-sonar
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-6.1 Sol leads 81.9 to 21.1.
- Sonar is cheaper at $1 / $1 per million input/output tokens, against $2 / $10 for GPT-6.1 Sol.
- GPT-6.1 Sol accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | GPT-6.1 Sol | Sonar |
|---|---|---|
| Provider | OpenAI | Perplexity |
| Noometry Index | 65.6 | 38.5 |
| Rank | 6 | 187 |
| Context | 1.05M | 128K |
| Input $/M | $2 | $1 |
| Output $/M | $10 | $1 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-6.1 Sol: 63.2 (#8)
- Sonar: 35.7 (#221)

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| DeepSWE | 75.2% | — |
| FrontierCode | 50.2% | — |
| LMArena WebDev | 1755 | — |
| SciCode | 55.8% | — |
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1487 | — |

## Agentic & Tool Use

- GPT-6.1 Sol: 39.6 (#26)
- Sonar: —

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| APEX-Agents | 60% | — |
| GDP.pdf | 32% | — |

## Reasoning

- GPT-6.1 Sol: 81.9 (#2)
- Sonar: 21.1 (#227)

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| ARC-AGI-2 | 94.2% | — |
| NYT Connections (extended) | 95.5% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| Chess Puzzles | 61% | — |
| EBR-Bench | 54.3% | — |
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1466 | — |
| Mystery Game Puzzles | 80% | — |
| LiveBench Data Analysis | — | 37.9% |
| Epoch Capabilities Index | 166.09 | — |
| LiveBench | — | 46.9% |

## Math

- GPT-6.1 Sol: 93.7 (#1)
- Sonar: 33.7 (#200)

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| FrontierMath (Tiers 1-3) | 93.7% | — |
| FrontierMath Tier 4 | 100% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 99% | — |
| LiveBench Math | — | 41.6% |
| LMArena Math | 1464 | — |

## Knowledge

- GPT-6.1 Sol: 71.8 (#4)
- Sonar: —

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| GPQA Diamond | 95.4% | — |
| SimpleQA Verified | 73.9% | — |
| LMArena Expert | 1502 | — |

## Multimodal

- GPT-6.1 Sol: 52.7 (#5)
- Sonar: —

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| LMArena Vision | 1288 | — |
| Furniture Assembly | 80% | — |

## Multilingual

- GPT-6.1 Sol: 54.3 (#46)
- Sonar: —

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| LMArena Non-English | 1438 | — |
| LMArena Chinese | 1477 | — |
| LMArena Russian | 1455 | — |

## Instruction Following

- GPT-6.1 Sol: 77.0 (#29)
- Sonar: 71.4 (#150)

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1468 | — |

## Long Context

- GPT-6.1 Sol: 44.9 (#54)
- Sonar: —

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| LMArena Longer Query | 1465 | — |

## Writing & Preference

- GPT-6.1 Sol: 63.6 (#63)
- Sonar: 52.6 (#167)

| Benchmark | GPT-6.1 Sol | Sonar |
|---|---|---|
| LMArena Text | 1447 | — |
| LMArena Creative Writing | 1432 | — |
| LMArena Multi-Turn | 1449 | — |
| LiveBench Language | — | 44.1% |

## FAQ

### Is GPT-6.1 Sol better than Sonar?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 38.5 on the Noometry Index. Sonar costs 4.0× less per token, which makes it the better buy when GPT-6.1 Sol's lead doesn't matter for your workload.

### Which is cheaper, GPT-6.1 Sol or Sonar?

Sonar is cheaper. It lists at $1 per million input tokens and $1 per million output tokens; GPT-6.1 Sol lists at $2 and $10.

### Is GPT-6.1 Sol or Sonar better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 35.7 in the Noometry coding category.

### Which has the bigger context window?

GPT-6.1 Sol does, with 1.05M tokens against 128K.

### How many benchmarks do GPT-6.1 Sol and Sonar share?

0 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Sonar has 7.