# GPT-5.5 Instant vs Mistral 7B

> GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 22.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-5-instant-vs-mistral-7b
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. GPT-5.5 Instant scores higher in 8 categories and Mistral 7B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 7.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.1% for GPT-5.5 Instant and 0.3% for Mistral 7B.
- Mistral 7B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 42.5 | 22.9 |
| Rank | 99 | 346 |
| Context | — | 8K |
| Input $/M | — | $0.25 |
| Output $/M | — | $0.25 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Instant: 43.7 (#73)
- Mistral 7B: 25.9 (#321)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Coding | 1433 | 1082 |
| SciCode | 48.6% | — |
| BigCodeBench Instruct | — | 19.5% |
| BigCodeBench Complete | — | 27.3% |
| HumanEval+ | — | 36% |
| MBPP+ | — | 42.1% |

## Reasoning

- GPT-5.5 Instant: 24.2 (#149)
- Mistral 7B: 12.6 (#331)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| Chess Puzzles | 12% | 0% |
| LMArena Hard Prompts | 1426 | 1067 |
| Epoch Capabilities Index | 142.48 | 111.97 |
| CritPt | 0% | — |
| DTBench | — | 42.5% |
| Adversarial NLI | — | 47.1% |
| BIG-Bench Hard | — | 56.1% |
| HellaSwag | — | 81% |
| PIQA | — | 83% |
| WinoGrande | — | 75.3% |

## Math

- GPT-5.5 Instant: 26.1 (#241)
- Mistral 7B: 7.6 (#319)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.1% | 0.3% |
| LMArena Math | 1420 | 1085 |
| FrontierMath (Tiers 1-3) | 26.3% | — |
| FrontierMath Tier 4 | 2.4% | — |
| MATH Level 5 | — | 3.7% |
| GSM8K | — | 54.4% |

## Knowledge

- GPT-5.5 Instant: 48.9 (#68)
- Mistral 7B: 7.3 (#306)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| GPQA Diamond | 82.5% | 15.2% |
| LMArena Expert | 1409 | 1036 |
| ARC (AI2) Challenge | — | 78.6% |
| BoolQ | — | 87.4% |
| MMLU | — | 62.5% |
| OpenBookQA | — | 79.8% |
| TriviaQA | — | 75.2% |

## Multimodal

- GPT-5.5 Instant: 39.3 (#48)
- Mistral 7B: —

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |

## Multilingual

- GPT-5.5 Instant: 53.0 (#76)
- Mistral 7B: 26.0 (#278)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Non-English | 1417 | 1012 |
| LMArena Chinese | 1457 | 1009 |
| LMArena French | 1428 | 1036 |
| LMArena German | 1410 | 987 |
| LMArena Japanese | 1408 | 878 |
| LMArena Russian | 1430 | 1018 |
| LMArena Spanish | 1430 | 1026 |
| LMArena Korean | 1393 | — |

## Instruction Following

- GPT-5.5 Instant: 74.4 (#94)
- Mistral 7B: 54.5 (#275)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Instruction Following | 1407 | 1060 |

## Long Context

- GPT-5.5 Instant: 43.4 (#92)
- Mistral 7B: 32.2 (#266)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Longer Query | 1422 | 1060 |

## Writing & Preference

- GPT-5.5 Instant: 62.0 (#81)
- Mistral 7B: 30.9 (#281)

| Benchmark | GPT-5.5 Instant | Mistral 7B |
|---|---|---|
| LMArena Text | 1419 | 1090 |
| LMArena Creative Writing | 1420 | 1068 |
| LMArena Multi-Turn | 1434 | 1062 |

## FAQ

### Is GPT-5.5 Instant better than Mistral 7B?

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 22.9 on the Noometry Index.

### Is GPT-5.5 Instant or Mistral 7B better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 25.9 in the Noometry coding category.

### How many benchmarks do GPT-5.5 Instant and Mistral 7B share?

20 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Mistral 7B has 37.