Model comparison
Amazon Nova Experimental Chat 10 20 vs Claude Haiku 4.5
Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 42.1 to 39.5 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 3 categories and Claude Haiku 4.5 in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Amazon Nova Experimental Chat 10 20 leads 28.4 to 15.1.
Side by side
| Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 | |
|---|---|---|
| Provider | Amazon | Anthropic |
| Noometry Index | 42.1 | 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 | 17 | 53 |
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Category by category
Coding Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 10 20: 41.6 (#123), Claude Haiku 4.5: 44.0 (#78)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Coding | 1412 | 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 10 20: —, Claude Haiku 4.5: 33.6 (#52)
| Benchmark | Amazon Nova Experimental Chat 10 20 | 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 10 20 leads
Amazon Nova Experimental Chat 10 20: 28.4 (#106), Claude Haiku 4.5: 15.1 (#320)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 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 10 20: 39.0 (#119), Claude Haiku 4.5: 44.9 (#78)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Math | 1425 | 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 Too close to call
Amazon Nova Experimental Chat 10 20: 38.5 (#144), Claude Haiku 4.5: 37.7 (#153)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Expert | 1386 | 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 10 20: —, Claude Haiku 4.5: 26.8 (#118)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| Blueprint-Bench 2 | — | 0% |
| LMArena Document | — | 1420 |
Multilingual Too close to call
Amazon Nova Experimental Chat 10 20: 49.5 (#131), Claude Haiku 4.5: 49.9 (#129)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Non-English | 1372 | 1377 |
| LMArena Chinese | 1404 | 1417 |
| LMArena French | 1425 | 1408 |
| LMArena German | 1391 | 1375 |
| LMArena Japanese | 1360 | 1339 |
| LMArena Korean | 1324 | 1347 |
| LMArena Russian | 1371 | 1381 |
| LMArena Spanish | 1382 | 1420 |
Instruction Following Too close to call
Amazon Nova Experimental Chat 10 20: 72.1 (#141), Claude Haiku 4.5: 71.4 (#149)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1414 |
| IFEval | — | 80.1% |
Long Context Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 10 20: 41.7 (#133), Claude Haiku 4.5: 43.6 (#92)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Longer Query | 1370 | 1427 |
Writing & Preference Claude Haiku 4.5 leads
Amazon Nova Experimental Chat 10 20: 56.6 (#136), Claude Haiku 4.5: 57.9 (#123)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Claude Haiku 4.5 |
|---|---|---|
| LMArena Text | 1394 | 1396 |
| LMArena Creative Writing | 1318 | 1372 |
| LMArena Multi-Turn | 1364 | 1409 |
| WildBench | — | 83.9% |
| EQ-Bench 4 | — | 1064 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than Claude Haiku 4.5?
Amazon Nova Experimental Chat 10 20 is the stronger model overall, scoring 42.1 to 39.5 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or Claude Haiku 4.5 better for coding?
Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 41.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and Claude Haiku 4.5 share?
17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Claude Haiku 4.5 has 53.