Model comparison
Amazon Nova Micro vs o3-pro
o3-pro is the stronger model overall, scoring 42.9 to 30.4 on the Noometry Index. Amazon Nova Micro costs 571× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Amazon Nova Micro scores higher in 1 category and o3-pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.2 to 36.5.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 5.5% for Amazon Nova Micro and 23.3% for o3-pro.
- Amazon Nova Micro is cheaper at $0.035 / $0.14 per million input/output tokens, against $20 / $80 for o3-pro.
- o3-pro accepts more context: 200K tokens versus 128K.
Side by side
| Amazon Nova Micro | o3-pro | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 30.4 | 42.9 |
| Released | 2024-12-03 | 2025-06-10 |
| Weights | Proprietary | Proprietary |
| Context window | 128K | 200K |
| Max output | 10K | 100K |
| Input $ / M tokens | $0.035 | $20 |
| Output $ / M tokens | $0.14 | $80 |
| Results tracked | 32 | 12 |
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Category by category
Coding o3-pro leads
Amazon Nova Micro: 30.5 (#295), o3-pro: 55.5 (#24)
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LiveBench Coding | 20.2% | — |
| LMArena Coding | 1218 | — |
Agentic & Tool Use Not comparable
Amazon Nova Micro: 22.1 (#132), o3-pro: —
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| Berkeley Function Calling Leaderboard | 22.3% | — |
Reasoning o3-pro leads
Amazon Nova Micro: 17.4 (#294), o3-pro: 23.8 (#171)
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LiveBench Reasoning | 25.1% | — |
| LMArena Hard Prompts | 1191 | — |
| DTBench | — | 86.9% |
| LiveBench Data Analysis | 34% | — |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |
| LiveBench | 29.6% | — |
Math Not comparable
Amazon Nova Micro: 26.9 (#254), o3-pro: —
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| Omni-MATH | 21.4% | — |
| LiveBench Math | 34.5% | — |
| LMArena Math | 1206 | — |
Knowledge Too close to call
Amazon Nova Micro: 29.6 (#237), o3-pro: 29.5 (#238)
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| Vectara Hallucination Rate | 5.5% | 23.3% |
| MMLU-Pro | 51.1% | — |
| Confabulations | — | 14.2% |
| GPQA (HELM) | 38.3% | — |
| LMArena Expert | 1184 | — |
| MMLU | 70.8% | — |
Multilingual Not comparable
Amazon Nova Micro: 36.5 (#239), o3-pro: —
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| LMArena Non-English | 1186 | — |
| LMArena Chinese | 1209 | — |
| LMArena French | 1238 | — |
| LMArena German | 1192 | — |
| LMArena Japanese | 1154 | — |
| LMArena Korean | 1150 | — |
| LMArena Russian | 1185 | — |
| LMArena Spanish | 1225 | — |
Instruction Following Not comparable
Amazon Nova Micro: 56.3 (#272), o3-pro: —
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| LiveBench Instruction Following | 48% | — |
| IFEval | 76% | — |
| LMArena Instruction Following | 1174 | — |
Long Context o3-pro leads
Amazon Nova Micro: 36.5 (#229), o3-pro: 72.2 (#1)
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1205 | — |
Writing & Preference o3-pro leads
Amazon Nova Micro: 39.5 (#247), o3-pro: 57.1 (#133)
| Benchmark | Amazon Nova Micro | o3-pro |
|---|---|---|
| LMArena Text | 1208 | — |
| LMArena Creative Writing | 1172 | — |
| Short-Story Creative Writing | — | 84.4% |
| WildBench | 74.3% | — |
| LMArena Multi-Turn | 1178 | — |
| LiveBench Language | 15.8% | — |
Frequently asked questions
Is Amazon Nova Micro better than o3-pro?
o3-pro is the stronger model overall, scoring 42.9 to 30.4 on the Noometry Index. Amazon Nova Micro costs 571× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.
Which is cheaper, Amazon Nova Micro or o3-pro?
Amazon Nova Micro is cheaper. It lists at $0.035 per million input tokens and $0.14 per million output tokens; o3-pro lists at $20 and $80.
Is Amazon Nova Micro or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 30.5 in the Noometry coding category.
Which has the bigger context window?
o3-pro does, with 200K tokens against 128K.
How many benchmarks do Amazon Nova Micro and o3-pro share?
1 benchmark has published results for both models. Amazon Nova Micro has 32 scored results on Noometry and o3-pro has 12.