Model comparison
Claude Haiku 4.5 vs Nova 2.0 Pro Preview
Claude Haiku 4.5 is the stronger model overall, scoring 39.3 to 32.8 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 2 categories and Nova 2.0 Pro Preview in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Claude Haiku 4.5 leads 33.5 to 21.9.
Side by side
| Claude Haiku 4.5 | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | Anthropic | Amazon |
| Noometry Index | 39.3 | 32.8 |
| Released | 2025-10-15 | 2025-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $5 | — |
| Results tracked | 53 | 3 |
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Category by category
Coding Claude Haiku 4.5 leads
Claude Haiku 4.5: 43.9 (#71), Nova 2.0 Pro Preview: 40.2 (#130)
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | 43.3% | 42.7% |
| SWE-bench Verified (bash only) | 66.6% | — |
| LMArena WebDev | 1330 | — |
| SWE-bench Multilingual | 64.7% | — |
| WeirdML | 45.4% | — |
| LMArena Coding | 1454 | — |
| ALE-Bench | 653.48 | — |
Agentic & Tool Use Claude Haiku 4.5 leads
Claude Haiku 4.5: 33.5 (#50), Nova 2.0 Pro Preview: 21.9 (#127)
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| Terminal-Bench | 35.5% | — |
| Berkeley Function Calling Leaderboard | 68.7% | — |
| DeepResearch Bench | 45.5% | — |
| BALROG | 31.2% | — |
| ExploitBench | 13.7% | — |
| GDP.pdf | — | 2% |
| Vending-Bench 2 | 458.89 | — |
Reasoning Nova 2.0 Pro Preview leads
Claude Haiku 4.5: 15.1 (#310), Nova 2.0 Pro Preview: 21.7 (#189)
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 0% | 0% |
| ARC-AGI-2 | 4% | — |
| NYT Connections (extended) | 14.3% | — |
| ARC-AGI-1 | 47.7% | — |
| Chess Puzzles | 8% | — |
| LMArena Hard Prompts | 1420 | — |
| DTBench | 73.6% | — |
| LMCA | 30.9% | — |
| Epoch Capabilities Index | 142.42 | — |
| ForecastBench | 61.4 | — |
Math Not comparable
Claude Haiku 4.5: 43.0 (#69), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 66.7% | — |
| Omni-MATH | 56.1% | — |
| LMArena Math | 1395 | — |
| MATH Level 5 | 96.4% | — |
| FrontierMath (Feb 2025 set) | 5.9% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Not comparable
Claude Haiku 4.5: 37.6 (#146), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 71.2% | — |
| SimpleQA Verified | 13.2% | — |
| MMLU-Pro | 77.7% | — |
| Vectara Hallucination Rate | 9.8% | — |
| GPQA (HELM) | 60.5% | — |
| LMArena Expert | 1443 | — |
Multimodal Not comparable
Claude Haiku 4.5: 27.0 (#111), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |
Multilingual Not comparable
Claude Haiku 4.5: 50.1 (#124), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1376 | — |
| LMArena Chinese | 1415 | — |
| LMArena French | 1408 | — |
| LMArena German | 1377 | — |
| LMArena Japanese | 1339 | — |
| LMArena Korean | 1346 | — |
| LMArena Russian | 1380 | — |
| LMArena Spanish | 1420 | — |
Instruction Following Not comparable
Claude Haiku 4.5: 71.6 (#144), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| IFEval | 80.1% | — |
| LMArena Instruction Following | 1414 | — |
Long Context Not comparable
Claude Haiku 4.5: 43.6 (#86), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Longer Query | 1427 | — |
Writing & Preference Not comparable
Claude Haiku 4.5: 58.1 (#119), Nova 2.0 Pro Preview: —
| Benchmark | Claude Haiku 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1396 | — |
| LMArena Creative Writing | 1371 | — |
| WildBench | 83.9% | — |
| EQ-Bench 4 | 1064 | — |
| LMArena Multi-Turn | 1409 | — |
Frequently asked questions
Is Claude Haiku 4.5 better than Nova 2.0 Pro Preview?
Claude Haiku 4.5 is the stronger model overall, scoring 39.3 to 32.8 on the Noometry Index.
Is Claude Haiku 4.5 or Nova 2.0 Pro Preview better for coding?
Claude Haiku 4.5 scores higher on coding benchmarks: 43.9 versus 40.2 in the Noometry coding category.
How many benchmarks do Claude Haiku 4.5 and Nova 2.0 Pro Preview share?
2 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Nova 2.0 Pro Preview has 3.