Model comparison
Amazon Nova Micro vs GPT-5.1
GPT-5.1 is the stronger model overall, scoring 49.0 to 30.4 on the Noometry Index. Amazon Nova Micro costs 56× less per token, which makes it the better buy when GPT-5.1's lead doesn't matter for your workload.
Last verified . 30 shared benchmarks.
Summary
- They share 30 benchmarks with published results for both. Amazon Nova Micro scores higher in 0 categories and GPT-5.1 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where GPT-5.1 leads 83.9 to 56.3.
- The biggest single-benchmark swing is LiveBench Reasoning: 25.1% for Amazon Nova Micro and 95.8% for GPT-5.1.
- Amazon Nova Micro is cheaper at $0.035 / $0.14 per million input/output tokens, against $1.25 / $10 for GPT-5.1.
- GPT-5.1 accepts more context: 400K tokens versus 128K.
Side by side
| Amazon Nova Micro | GPT-5.1 | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 30.4 | 49.0 |
| Released | 2024-12-03 | 2025-11-13 |
| Weights | Proprietary | Proprietary |
| Context window | 128K | 400K |
| Max output | 10K | 128K |
| Input $ / M tokens | $0.035 | $1.25 |
| Output $ / M tokens | $0.14 | $10 |
| Results tracked | 32 | 63 |
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Category by category
Coding GPT-5.1 leads
Amazon Nova Micro: 30.5 (#295), GPT-5.1: 46.4 (#66)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LiveBench Coding | 20.2% | 72.5% |
| LMArena Coding | 1218 | 1454 |
| SWE-bench Verified | — | 68% |
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1395 |
| SciCode | — | 43.3% |
| GSO | — | 13.7% |
| WeirdML | — | 60.8% |
| ALE-Bench | — | 1,192 |
Agentic & Tool Use GPT-5.1 leads
Amazon Nova Micro: 22.1 (#132), GPT-5.1: 32.7 (#60)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| Terminal-Bench | — | 47.6% |
| Berkeley Function Calling Leaderboard | 22.3% | — |
| DeepResearch Bench | — | 42.8% |
| LMArena Search | — | 1199 |
| Vending-Bench 2 | — | 1,473 |
Reasoning GPT-5.1 leads
Amazon Nova Micro: 17.4 (#294), GPT-5.1: 39.8 (#58)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LiveBench Reasoning | 25.1% | 95.8% |
| LMArena Hard Prompts | 1191 | 1457 |
| LiveBench Data Analysis | 34% | 72.1% |
| LiveBench | 29.6% | 78.8% |
| ARC-AGI-2 | — | 17.6% |
| SimpleBench | — | 53.2% |
| ARC-AGI-1 | — | 72.8% |
| CritPt | — | 4.9% |
| Chess Puzzles | — | 32% |
| EnigmaEval | — | 11.2% |
| Mystery Game Puzzles | — | 19% |
| DTBench | — | 90.1% |
| LMCA | — | 43.9% |
| Epoch Capabilities Index | — | 149.64 |
| ForecastBench | — | 58.1 |
Math GPT-5.1 leads
Amazon Nova Micro: 26.9 (#254), GPT-5.1: 52.2 (#51)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| Omni-MATH | 21.4% | 46.4% |
| LiveBench Math | 34.5% | 94.5% |
| LMArena Math | 1206 | 1447 |
| OTIS Mock AIME 2024-2025 | — | 88.6% |
| FrontierMath (Feb 2025 set) | — | 31% |
| FrontierMath Tier 4 (v1) | — | 12.5% |
Knowledge GPT-5.1 leads
Amazon Nova Micro: 29.6 (#237), GPT-5.1: 50.6 (#71)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| MMLU-Pro | 51.1% | 57.9% |
| Vectara Hallucination Rate | 5.5% | 10.9% |
| GPQA (HELM) | 38.3% | 44.2% |
| LMArena Expert | 1184 | 1470 |
| GPQA Diamond | — | 87.6% |
| Humanity's Last Exam | — | 23.7% |
| SimpleQA Verified | — | 48% |
| MMLU | 70.8% | — |
Multimodal Not comparable
Amazon Nova Micro: —, GPT-5.1: 44.8 (#19)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LMArena Vision | — | 1250 |
| VPCT | — | 58.7% |
| LMArena Document | — | 1403 |
Multilingual GPT-5.1 leads
Amazon Nova Micro: 36.5 (#239), GPT-5.1: 53.8 (#56)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LMArena Non-English | 1186 | 1431 |
| LMArena Chinese | 1209 | 1495 |
| LMArena French | 1238 | 1450 |
| LMArena German | 1192 | 1438 |
| LMArena Japanese | 1154 | 1453 |
| LMArena Korean | 1150 | 1401 |
| LMArena Russian | 1185 | 1435 |
| LMArena Spanish | 1225 | 1433 |
Instruction Following GPT-5.1 leads
Amazon Nova Micro: 56.3 (#272), GPT-5.1: 83.9 (#1)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LiveBench Instruction Following | 48% | 93.3% |
| IFEval | 76% | 93.5% |
| LMArena Instruction Following | 1174 | 1443 |
Long Context GPT-5.1 leads
Amazon Nova Micro: 36.5 (#229), GPT-5.1: 47.6 (#14)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LMArena Longer Query | 1205 | 1447 |
| CL-bench | — | 23.7% |
| CL-bench Life | — | 17.3% |
Writing & Preference GPT-5.1 leads
Amazon Nova Micro: 39.5 (#247), GPT-5.1: 64.5 (#55)
| Benchmark | Amazon Nova Micro | GPT-5.1 |
|---|---|---|
| LMArena Text | 1208 | 1443 |
| LMArena Creative Writing | 1172 | 1427 |
| WildBench | 74.3% | 86.3% |
| LMArena Multi-Turn | 1178 | 1450 |
| LiveBench Language | 15.8% | 80.2% |
Frequently asked questions
Is Amazon Nova Micro better than GPT-5.1?
GPT-5.1 is the stronger model overall, scoring 49.0 to 30.4 on the Noometry Index. Amazon Nova Micro costs 56× less per token, which makes it the better buy when GPT-5.1's lead doesn't matter for your workload.
Which is cheaper, Amazon Nova Micro or GPT-5.1?
Amazon Nova Micro is cheaper. It lists at $0.035 per million input tokens and $0.14 per million output tokens; GPT-5.1 lists at $1.25 and $10.
Is Amazon Nova Micro or GPT-5.1 better for coding?
GPT-5.1 scores higher on coding benchmarks: 46.4 versus 30.5 in the Noometry coding category.
Which has the bigger context window?
GPT-5.1 does, with 400K tokens against 128K.
How many benchmarks do Amazon Nova Micro and GPT-5.1 share?
30 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and GPT-5.1 has 63.