# GPT-5.5 Instant vs Llama 13b

> GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 23.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-5-instant-vs-llama-13b
- Last updated: 2026-10-10
- Shared benchmarks: 9

## Summary

- They share 9 benchmarks with published results for both. GPT-5.5 Instant scores higher in 6 categories and Llama 13b in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.5 Instant leads 62.0 to 13.9.
- Llama 13b has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 42.5 | 23.9 |
| Rank | 99 | 344 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Instant: 43.7 (#73)
- Llama 13b: 20.9 (#332)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Coding | 1433 | 683 |
| SciCode | 48.6% | — |

## Reasoning

- GPT-5.5 Instant: 24.2 (#149)
- Llama 13b: 13.4 (#327)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Hard Prompts | 1426 | 728 |
| Epoch Capabilities Index | 142.48 | 100.09 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| BIG-Bench Hard | — | 37.9% |
| HellaSwag | — | 79.2% |
| LAMBADA | — | 75.2% |
| PIQA | — | 80.1% |
| WinoGrande | — | 73% |

## Math

- GPT-5.5 Instant: 26.1 (#241)
- Llama 13b: 24.4 (#259)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Math | 1420 | 838 |
| FrontierMath (Tiers 1-3) | 26.3% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.1% | — |
| GSM8K | — | 20.6% |

## Knowledge

- GPT-5.5 Instant: 48.9 (#68)
- Llama 13b: —

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| GPQA Diamond | 82.5% | — |
| LMArena Expert | 1409 | — |
| ARC (AI2) Challenge | — | 52.7% |
| BoolQ | — | 78.7% |
| MMLU | — | 47.7% |
| OpenBookQA | — | 56.4% |
| TriviaQA | — | 77.9% |

## Multimodal

- GPT-5.5 Instant: 39.3 (#48)
- Llama 13b: —

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
| ScienceQA | — | 43.3% |

## Multilingual

- GPT-5.5 Instant: 53.0 (#76)
- Llama 13b: 16.8 (#292)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Non-English | 1417 | 819 |
| LMArena Chinese | 1457 | — |
| LMArena French | 1428 | — |
| LMArena German | 1410 | — |
| LMArena Japanese | 1408 | — |
| LMArena Korean | 1393 | — |
| LMArena Russian | 1430 | — |
| LMArena Spanish | 1430 | — |

## Instruction Following

- GPT-5.5 Instant: 74.4 (#94)
- Llama 13b: 36.9 (#300)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Instruction Following | 1407 | 781 |

## Long Context

- GPT-5.5 Instant: 43.4 (#92)
- Llama 13b: —

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Longer Query | 1422 | — |

## Writing & Preference

- GPT-5.5 Instant: 62.0 (#81)
- Llama 13b: 13.9 (#307)

| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Text | 1419 | 834 |
| LMArena Creative Writing | 1420 | 794 |
| LMArena Multi-Turn | 1434 | 753 |

## FAQ

### Is GPT-5.5 Instant better than Llama 13b?

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 23.9 on the Noometry Index.

### Is GPT-5.5 Instant or Llama 13b better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 20.9 in the Noometry coding category.

### How many benchmarks do GPT-5.5 Instant and Llama 13b share?

9 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Llama 13b has 21.