Model comparison
GPT-5.5 Instant vs Llama 13b
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 24.4 on the Noometry Index.
Last verified . 9 shared benchmarks.
MetaSummary
- They share 9 benchmarks with published results for both. GPT-5.5 Instant scores higher in 5 categories and Llama 13b in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.5 Instant leads 61.8 to 13.8.
- Llama 13b has downloadable open weights; the other is API-only.
Side by side
| GPT-5.5 Instant | Llama 13b | |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 42.7 | 24.4 |
| Released | 2026-05-05 | 2023-02-24 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 27 | 21 |
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Category by category
Coding GPT-5.5 Instant leads
GPT-5.5 Instant: 44.3 (#74), Llama 13b: 21.4 (#337)
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Coding | 1433 | 683 |
| SciCode | 48.6% | — |
Reasoning GPT-5.5 Instant leads
GPT-5.5 Instant: 24.9 (#155), Llama 13b: 14.0 (#329)
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Hard Prompts | 1426 | 728 |
| Epoch Capabilities Index | 142.52 | 100.58 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| BIG-Bench Hard | — | 37.9% |
| HellaSwag | — | 79.2% |
| LAMBADA | — | 75.2% |
| PIQA | — | 80.1% |
| WinoGrande | — | 73% |
Math Too close to call
GPT-5.5 Instant: 26.5 (#259), Llama 13b: 26.7 (#256)
| 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 Not comparable
GPT-5.5 Instant: 48.9 (#74), 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 Not comparable
GPT-5.5 Instant: 40.0 (#52), Llama 13b: —
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
| ScienceQA | — | 43.3% |
Multilingual GPT-5.5 Instant leads
GPT-5.5 Instant: 52.8 (#80), Llama 13b: 16.6 (#297)
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Non-English | 1417 | 819 |
| LMArena Chinese | 1456 | — |
| LMArena French | 1428 | — |
| LMArena German | 1411 | — |
| LMArena Japanese | 1408 | — |
| LMArena Korean | 1392 | — |
| LMArena Russian | 1431 | — |
| LMArena Spanish | 1429 | — |
Instruction Following GPT-5.5 Instant leads
GPT-5.5 Instant: 74.2 (#100), Llama 13b: 36.7 (#305)
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Instruction Following | 1406 | 781 |
Long Context Not comparable
GPT-5.5 Instant: 43.4 (#96), Llama 13b: —
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Longer Query | 1422 | — |
Writing & Preference GPT-5.5 Instant leads
GPT-5.5 Instant: 61.8 (#85), Llama 13b: 13.8 (#312)
| Benchmark | GPT-5.5 Instant | Llama 13b |
|---|---|---|
| LMArena Text | 1419 | 834 |
| LMArena Creative Writing | 1419 | 794 |
| LMArena Multi-Turn | 1433 | 753 |
Frequently asked questions
Is GPT-5.5 Instant better than Llama 13b?
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 24.4 on the Noometry Index.
Is GPT-5.5 Instant or Llama 13b better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 21.4 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.