# GPT-6.1 Sol vs Granite 4.2 8B

> GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 40.5 on the Noometry Index. Granite 4.2 8B costs 37× 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-granite-4-2-8b
- Last updated: 2026-10-12
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. GPT-6.1 Sol scores higher in 7 categories and Granite 4.2 8B in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-6.1 Sol leads 81.9 to 26.6.
- Granite 4.2 8B is cheaper at $0.06 / $0.25 per million input/output tokens, against $2 / $10 for GPT-6.1 Sol.
- GPT-6.1 Sol accepts more context: 1.05M tokens versus 131K.
- Granite 4.2 8B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 65.6 | 40.5 |
| Rank | 6 | 148 |
| Context | 1.05M | 131K |
| Input $/M | $2 | $0.06 |
| Output $/M | $10 | $0.25 |
| Weights | Proprietary | Open |

## Coding

- GPT-6.1 Sol: 63.2 (#8)
- Granite 4.2 8B: 40.5 (#137)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Coding | 1487 | 1380 |
| DeepSWE | 75.2% | — |
| FrontierCode | 50.2% | — |
| LMArena WebDev | 1755 | — |
| SciCode | 55.8% | — |

## Agentic & Tool Use

- GPT-6.1 Sol: 39.6 (#26)
- Granite 4.2 8B: —

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| APEX-Agents | 60% | — |
| GDP.pdf | 32% | — |

## Reasoning

- GPT-6.1 Sol: 81.9 (#2)
- Granite 4.2 8B: 26.6 (#131)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Hard Prompts | 1466 | 1329 |
| 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% | — |
| Mystery Game Puzzles | 80% | — |
| Epoch Capabilities Index | 166.09 | — |

## Math

- GPT-6.1 Sol: 93.7 (#1)
- Granite 4.2 8B: —

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 93.7% | — |
| FrontierMath Tier 4 | 100% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 99% | — |
| LMArena Math | 1464 | — |

## Knowledge

- GPT-6.1 Sol: 71.8 (#4)
- Granite 4.2 8B: 38.4 (#145)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Expert | 1502 | 1384 |
| GPQA Diamond | 95.4% | — |
| SimpleQA Verified | 73.9% | — |

## Multimodal

- GPT-6.1 Sol: 52.7 (#5)
- Granite 4.2 8B: —

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Vision | 1288 | — |
| Furniture Assembly | 80% | — |

## Multilingual

- GPT-6.1 Sol: 54.3 (#46)
- Granite 4.2 8B: 44.5 (#178)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Non-English | 1438 | 1302 |
| LMArena Chinese | 1477 | 1366 |
| LMArena Russian | 1455 | 1285 |

## Instruction Following

- GPT-6.1 Sol: 77.0 (#29)
- Granite 4.2 8B: 68.7 (#184)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Instruction Following | 1468 | 1301 |

## Long Context

- GPT-6.1 Sol: 44.9 (#54)
- Granite 4.2 8B: 40.3 (#159)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Longer Query | 1465 | 1324 |

## Writing & Preference

- GPT-6.1 Sol: 63.6 (#63)
- Granite 4.2 8B: 49.6 (#189)

| Benchmark | GPT-6.1 Sol | Granite 4.2 8B |
|---|---|---|
| LMArena Text | 1447 | 1320 |
| LMArena Creative Writing | 1432 | 1236 |
| LMArena Multi-Turn | 1449 | 1301 |

## FAQ

### Is GPT-6.1 Sol better than Granite 4.2 8B?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 40.5 on the Noometry Index. Granite 4.2 8B costs 37× 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 Granite 4.2 8B?

Granite 4.2 8B is cheaper. It lists at $0.06 per million input tokens and $0.25 per million output tokens; GPT-6.1 Sol lists at $2 and $10.

### Is GPT-6.1 Sol or Granite 4.2 8B better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 40.5 in the Noometry coding category.

### Which has the bigger context window?

GPT-6.1 Sol does, with 1.05M tokens against 131K.

### How many benchmarks do GPT-6.1 Sol and Granite 4.2 8B share?

11 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Granite 4.2 8B has 11.