# Claude Haiku 4.5 vs Gemini 3 Flash

> Side-by-side benchmark comparison for Claude Haiku 4.5 and Gemini 3 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-vs-gemini-3-flash
- Last updated: October 17, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Gemini 3 Flash leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Gemini 3 Flash has the higher overall point estimate 54.28 to 41.16. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 33.3 for Claude Haiku 4.5 and 55.7 for Gemini 3 Flash.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 41.2% and 85.6%.
- Gemini 3 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3 Flash also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Haiku 4.5 | Gemini 3 Flash |
|----------|----------|----------|
| Creator | Anthropic | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 1M |
| Overall Score | 41.16 | 54.28 |
| Benchmarks Covered | 9 | 11 |
| Pricing (input/output) | $1.00 / $5.00 | $0.50 / $3.00 |

## Category Breakdown

### Agentic

- Winner: Gemini 3 Flash
- Claude Haiku 4.5 public-lane score: 21.4 (Supported · #107/128)
- Gemini 3 Flash public-lane score: 32.4 (Supported · #88/128)

| Benchmark | Claude Haiku 4.5 | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | 11.4% | Claude Haiku 4.5 |
| Terminal-Bench 2.1 (Vals) | 43.8% | 53.9% | Gemini 3 Flash |
| MazeBench | 0% | Coming soon | Coming soon |
| Claw-Eval | Coming soon | 49.2% | Coming soon |
| Gert Labs | Coming soon | 56.63% | Coming soon |

### Coding

- Winner: Gemini 3 Flash
- Claude Haiku 4.5 public-lane score: 16.8 (Supported · #126/150)
- Gemini 3 Flash public-lane score: 32.1 (Supported · #88/150)

| Benchmark | Claude Haiku 4.5 | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | Coming soon | Coming soon |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | 85.6% | Gemini 3 Flash |
| SWE-bench (Vals) | 66.6% | 75.0% | Gemini 3 Flash |
| Vibe Code Bench | Coming soon | 20.20% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 63.8 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 80.3 (Unranked · 1 rankable row)

### Knowledge

- Winner: Directional only
- Claude Haiku 4.5 public-lane score: 33.3 (Estimated · #141/184)
- Gemini 3 Flash public-lane score: 55.7 (Supported · #55/184)

| Benchmark | Claude Haiku 4.5 | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | 87.9% | Gemini 3 Flash |
| MMLU-Pro (Vals) | 78.7% | 88.6% | Gemini 3 Flash |

### Instruction Following

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 66.1 (#76/148)

### Mathematics

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 57.4 (Unranked · 2 rankable rows)

| Benchmark | Claude Haiku 4.5 | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 51.228% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 17.073% | Coming soon |

## FAQ

### Which is better overall, Claude Haiku 4.5 or Gemini 3 Flash?

Gemini 3 Flash has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Haiku 4.5 and Gemini 3 Flash?

The widest category gap is in knowledge, where the averages are 33.3 for Claude Haiku 4.5 and 55.7 for Gemini 3 Flash.

### How many benchmarks does Claude Haiku 4.5 cover on BenchLM?

Claude Haiku 4.5 currently has 9 sourced benchmark scores on BenchLM.

### How many benchmarks does Gemini 3 Flash cover on BenchLM?

Gemini 3 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Haiku 4.5 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Gemini 3 Flash vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-gemini-3-flash)
- [Claude Haiku 4.5 vs Claude Opus 5.5](/compare/claude-haiku-4-5-vs-claude-opus-5-5)
- [Gemini 3 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-flash)

## Explore More

- [Claude Haiku 4.5 profile](/models/claude-haiku-4-5)
- [Gemini 3 Flash profile](/models/gemini-3-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)