Model comparison
Claude Haiku 4.5 vs Gemini 1.5 Flash 8B
Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 29.9 on the Noometry Index.
Last verified . 20 shared benchmarks.
GoogleSummary
- They share 20 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 7 categories and Gemini 1.5 Flash 8B in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 4.5 leads 44.9 to 14.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 66.7% for Claude Haiku 4.5 and 4.6% for Gemini 1.5 Flash 8B.
Side by side
| Claude Haiku 4.5 | Gemini 1.5 Flash 8B | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 39.5 | 29.9 |
| Released | 2025-10-15 | 2024-10-03 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $5 | — |
| Results tracked | 53 | 21 |
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Category by category
Coding Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.0 (#78), Gemini 1.5 Flash 8B: 35.5 (#225)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Coding | 1453 | 1218 |
| 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
Claude Haiku 4.5: 33.6 (#52), Gemini 1.5 Flash 8B: —
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| 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 Gemini 1.5 Flash 8B leads
Claude Haiku 4.5: 15.1 (#320), Gemini 1.5 Flash 8B: 20.0 (#244)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Hard Prompts | 1420 | 1209 |
| DTBench | 73.6% | 50% |
| ARC-AGI-2 | 4% | — |
| NYT Connections (extended) | 14.3% | — |
| ARC-AGI-1 | 47.7% | — |
| CritPt | 0% | — |
| Chess Puzzles | 8% | — |
| LMCA | 30.9% | — |
| Epoch Capabilities Index | 142.41 | — |
| ForecastBench | 61.4 | — |
Math Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.9 (#78), Gemini 1.5 Flash 8B: 14.2 (#302)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 66.7% | 4.6% |
| LMArena Math | 1396 | 1207 |
| Omni-MATH | 56.1% | — |
| MATH Level 5 | 96.4% | — |
| FrontierMath (Feb 2025 set) | 5.9% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Claude Haiku 4.5 leads
Claude Haiku 4.5: 37.7 (#153), Gemini 1.5 Flash 8B: 16.0 (#289)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| GPQA Diamond | 71.2% | 33% |
| LMArena Expert | 1442 | 1185 |
| SimpleQA Verified | 13.2% | — |
| MMLU-Pro | 77.7% | — |
| Vectara Hallucination Rate | 9.8% | — |
| GPQA (HELM) | 60.5% | — |
Multimodal Gemini 1.5 Flash 8B leads
Claude Haiku 4.5: 26.8 (#118), Gemini 1.5 Flash 8B: 28.2 (#115)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Vision | — | 1044 |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |
Multilingual Claude Haiku 4.5 leads
Claude Haiku 4.5: 49.9 (#129), Gemini 1.5 Flash 8B: 38.5 (#229)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Non-English | 1377 | 1215 |
| LMArena Chinese | 1417 | 1231 |
| LMArena French | 1408 | 1234 |
| LMArena German | 1375 | 1206 |
| LMArena Japanese | 1339 | 1150 |
| LMArena Korean | 1347 | 1140 |
| LMArena Russian | 1381 | 1236 |
| LMArena Spanish | 1420 | 1212 |
Instruction Following Claude Haiku 4.5 leads
Claude Haiku 4.5: 71.4 (#149), Gemini 1.5 Flash 8B: 62.8 (#236)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Instruction Following | 1414 | 1199 |
| IFEval | 80.1% | — |
Long Context Claude Haiku 4.5 leads
Claude Haiku 4.5: 43.6 (#92), Gemini 1.5 Flash 8B: 37.0 (#225)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Longer Query | 1427 | 1219 |
Writing & Preference Claude Haiku 4.5 leads
Claude Haiku 4.5: 57.9 (#123), Gemini 1.5 Flash 8B: 42.8 (#232)
| Benchmark | Claude Haiku 4.5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Text | 1396 | 1226 |
| LMArena Creative Writing | 1372 | 1218 |
| LMArena Multi-Turn | 1409 | 1185 |
| WildBench | 83.9% | — |
| EQ-Bench 4 | 1064 | — |
Frequently asked questions
Is Claude Haiku 4.5 better than Gemini 1.5 Flash 8B?
Claude Haiku 4.5 is the stronger model overall, scoring 39.5 to 29.9 on the Noometry Index.
Is Claude Haiku 4.5 or Gemini 1.5 Flash 8B better for coding?
Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 35.5 in the Noometry coding category.
How many benchmarks do Claude Haiku 4.5 and Gemini 1.5 Flash 8B share?
20 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Gemini 1.5 Flash 8B has 21.