Model comparison
Amazon Nova Experimental Chat 12 10 vs Claude Haiku 4.5
Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.9 to 39.5 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 5 categories and Claude Haiku 4.5 in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Amazon Nova Experimental Chat 12 10 leads 29.3 to 15.1.
Side by side
| Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 | |
|---|---|---|
| Provider | Amazon | Anthropic |
| Noometry Index | 42.9 | 39.5 |
| Released | — | 2025-10-15 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 64K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $5 |
| Results tracked | 12 | 53 |
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Category by category
Coding Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 12 10: 42.2 (#110), Claude Haiku 4.5: 44.0 (#78)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Coding | 1430 | 1453 |
| SWE-bench Verified (bash only) | — | 66.6% |
| LMArena WebDev | — | 1330 |
| SWE-bench Multilingual | — | 64.7% |
| SciCode | — | 43.3% |
| WeirdML | — | 45.4% |
| ALE-Bench | — | 653.48 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 12 10: —, Claude Haiku 4.5: 33.6 (#52)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| Terminal-Bench | — | 35.5% |
| Berkeley Function Calling Leaderboard | — | 68.7% |
| DeepResearch Bench | — | 45.5% |
| BALROG | — | 31.2% |
| ExploitBench | — | 13.7% |
| Vending-Bench 2 | — | 458.89 |
Reasoning Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 29.3 (#94), Claude Haiku 4.5: 15.1 (#320)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Hard Prompts | 1427 | 1420 |
| ARC-AGI-2 | — | 4% |
| NYT Connections (extended) | — | 14.3% |
| ARC-AGI-1 | — | 47.7% |
| CritPt | — | 0% |
| Chess Puzzles | — | 8% |
| DTBench | — | 73.6% |
| LMCA | — | 30.9% |
| Epoch Capabilities Index | — | 142.41 |
| ForecastBench | — | 61.4 |
Math Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 12 10: 38.9 (#124), Claude Haiku 4.5: 44.9 (#78)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Math | 1419 | 1396 |
| OTIS Mock AIME 2024-2025 | — | 66.7% |
| Omni-MATH | — | 56.1% |
| MATH Level 5 | — | 96.4% |
| FrontierMath (Feb 2025 set) | — | 5.9% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 39.2 (#136), Claude Haiku 4.5: 37.7 (#153)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Expert | 1408 | 1442 |
| GPQA Diamond | — | 71.2% |
| SimpleQA Verified | — | 13.2% |
| MMLU-Pro | — | 77.7% |
| Vectara Hallucination Rate | — | 9.8% |
| GPQA (HELM) | — | 60.5% |
Multimodal Not comparable
Amazon Nova Experimental Chat 12 10: —, Claude Haiku 4.5: 26.8 (#118)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| Blueprint-Bench 2 | — | 0% |
| LMArena Document | — | 1420 |
Multilingual Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 51.4 (#108), Claude Haiku 4.5: 49.9 (#129)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Non-English | 1398 | 1377 |
| LMArena Chinese | 1440 | 1417 |
| LMArena Russian | 1395 | 1381 |
| LMArena French | — | 1408 |
| LMArena German | — | 1375 |
| LMArena Japanese | — | 1339 |
| LMArena Korean | — | 1347 |
| LMArena Spanish | — | 1420 |
Instruction Following Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 73.2 (#123), Claude Haiku 4.5: 71.4 (#149)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1414 |
| IFEval | — | 80.1% |
Long Context Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 12 10: 42.4 (#125), Claude Haiku 4.5: 43.6 (#92)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Longer Query | 1391 | 1427 |
Writing & Preference Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 59.5 (#110), Claude Haiku 4.5: 57.9 (#123)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Text | 1420 | 1396 |
| LMArena Creative Writing | 1350 | 1372 |
| LMArena Multi-Turn | 1409 | 1409 |
| WildBench | — | 83.9% |
| EQ-Bench 4 | — | 1064 |
Frequently asked questions
Is Amazon Nova Experimental Chat 12 10 better than Claude Haiku 4.5?
Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.9 to 39.5 on the Noometry Index.
Is Amazon Nova Experimental Chat 12 10 or Claude Haiku 4.5 better for coding?
Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 42.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 12 10 and Claude Haiku 4.5 share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and Claude Haiku 4.5 has 53.