Model comparison
Claude Haiku 4.5 vs Gemma 4 12B
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Haiku 4.5 #77 (Estimated); Gemma 4 12B #137 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Haiku 4.5 and Gemma 4 12B share 0 comparable benchmark results. 1 of 8 categories are comparable. 5 results are unique to Claude Haiku 4.5; 23 to Gemma 4 12B.
Updated July 23, 2026- Shared results
- 0
- Claude Haiku 4.5 only
- 5
- Gemma 4 12B only
- 23
- Comparable categories
- 1 / 8
Pick Claude Haiku 4.5 if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if mathematics is the priority or you need the larger 256K context window.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Claude Haiku 4.5 is clearly ahead on the BenchAlign aggregate, 56.58 to 47.29. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemma 4 12B is the reasoning model in the pair, while Claude Haiku 4.5 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Gemma 4 12B gives you the larger context window at 256K, compared with 200K for Claude Haiku 4.5.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Haiku 4.5 | Gemma 4 12B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Haiku 4.5$1 input / $5 output | Gemma 4 12BNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Claude Haiku 4.5Not available | Gemma 4 12BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Haiku 4.5Not available | Gemma 4 12BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Haiku 4.5200K | Gemma 4 12B256K | Gemma 4 12B lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding2 benchmarks
Reasoning4 benchmarks
Knowledge11 benchmarks
| Benchmark | Claude Haiku 4.5 | Gemma 4 12B | Result |
|---|---|---|---|
| GPQASource | — | 78.8% | Not comparable |
| GPQA-DSource | — | 78.8% | Not comparable |
| MMLU-ProSource | — | 77.2% | Not comparable |
| HLE w/o toolsSource | — | 5.2% | Not comparable |
| MMMLUSource | — | 83.4% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 22.0% | Not comparable |
| AA-GPQA DiamondSource | — | 75.3% | Not comparable |
| AA-HLESource | — | 14.8% | Not comparable |
| AA-Omniscience IndexSource | — | -51.9% | Not comparable |
| AA-Omniscience AccuracySource | — | 16.0% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 80.8% | Not comparable |
MathGemma 4 12B wins3 benchmarks
Multimodal5 benchmarks
Inst. Following1 benchmarks
| Benchmark | Claude Haiku 4.5 | Gemma 4 12B | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 73.5% | Not comparable |
Frequently Asked Questions (2)
Which is better, Claude Haiku 4.5 or Gemma 4 12B?
Claude Haiku 4.5 is ahead on BenchLM's BenchAlign leaderboard, 56.58 to 47.29.
Which is better for math, Claude Haiku 4.5 or Gemma 4 12B?
Gemma 4 12B has the edge for math in this comparison, averaging 77.5 versus 4.9. Claude Haiku 4.5 stays close enough that the answer can still flip depending on your workload.
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