# Claude 3 Haiku vs Claude Opus 4.5

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

- Canonical page: https://benchlm.ai/compare/claude-3-haiku-vs-claude-opus-4-5
- Last updated: September 29, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude 3 Haiku and Claude Opus 4.5.

## Summary

- Claude 3 Haiku and Claude Opus 4.5 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude 3 Haiku | Claude Opus 4.5 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 200K |
| Independent public score (not head-to-head) | 14.78 | 54.89 |
| Benchmarks Covered | 0 | 45 |
| Pricing (input/output) | $0.25 / $1.25 | $5.00 / $25.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 31.2 (Estimated · #78/117)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 59.3% | Coming soon |
| OSWorld-Verified | Coming soon | 66.3% | Coming soon |
| OSWorld | Coming soon | 66.3% | Coming soon |
| Claw-Eval | Coming soon | 59.6% | Coming soon |
| QwenClawBench | Coming soon | 52.3% | Coming soon |
| τ³-bench results | Coming soon | 70.2% | Coming soon |
| VITA-Bench | Coming soon | 23.3% | Coming soon |
| DeepPlanning | Coming soon | 26.4% | Coming soon |
| Toolathlon | Coming soon | 43.5% | Coming soon |
| MCP Atlas | Coming soon | 42.3% | Coming soon |
| MCP-Tasks | Coming soon | 71.8% | Coming soon |
| WideResearch | Coming soon | 76.4% | Coming soon |
| CyberGym | Coming soon | 50.6% | Coming soon |
| Gert Labs | Coming soon | 64.23% | Coming soon |
| JobBench | Coming soon | 32.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 42.6 (Estimated · #56/143)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 80.9% | Coming soon |
| LiveCodeBench v6 | Coming soon | 84.8% | Coming soon |
| SWE-bench Pro | Coming soon | 57.1% | Coming soon |
| SWE Multilingual | Coming soon | 77.5% | Coming soon |
| NL2Repo | Coming soon | 43.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 41.2 (Unranked · 2 rankable rows)
- Claude Opus 4.5 public-lane score: 73.3 (Unranked · 4 rankable rows)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 64.4% | Coming soon |
| AI-Needle | Coming soon | 74% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 26.4 (Unranked · 1 rankable row)
- Claude Opus 4.5 public-lane score: 24.5 (#48/50)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 70.6% | Coming soon |
| MathVision | Coming soon | 74.3% | Coming soon |
| CharXiv | Coming soon | 68.5% | Coming soon |
| VideoMMMU | Coming soon | 84.4% | Coming soon |
| ScreenSpot Pro | Coming soon | 45.7% | Coming soon |
| V* | Coming soon | 67.0% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 20.1 (Estimated · #167/169)
- Claude Opus 4.5 public-lane score: 49.3 (Estimated · #62/169)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 87% | Coming soon |
| SuperGPQA | Coming soon | 70.6% | Coming soon |
| MMLU-Pro | Coming soon | 89.5% | Coming soon |
| MMLU-Redux | Coming soon | 96.6% | Coming soon |
| C-Eval | Coming soon | 92.2% | Coming soon |
| HLE | Coming soon | 30.8% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 82.9 (#2/12)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 85.7% | Coming soon |
| NOVA-63 | Coming soon | 56.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: 39.9 (#102/124)
- Claude Opus 4.5 public-lane score: 30.6 (#114/124)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 90.9% | Coming soon |
| IFBench | Coming soon | 58% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3 Haiku public-lane score: Coming soon
- Claude Opus 4.5 public-lane score: 57.9 (#6/7)

| Benchmark | Claude 3 Haiku | Claude Opus 4.5 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 95.1% | Coming soon |
| HMMT Feb 2025 | Coming soon | 92.9% | Coming soon |
| HMMT Nov 2025 | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2026 | Coming soon | 85.3% | Coming soon |
| MMAnswerBench | Coming soon | 84.0% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 20.690% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.167% | Coming soon |

## FAQ

### Can I compare Claude 3 Haiku and Claude Opus 4.5 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Claude 3 Haiku vs Claude Opus 4.5 Thinking](/compare/claude-3-haiku-vs-claude-opus-4-5-thinking)
- [Claude Opus 4.5 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [Claude 3 Haiku vs GPT-6 Astra](/compare/claude-3-haiku-vs-gpt-6-astra)
- [Claude Opus 4.5 vs GPT-6 Astra](/compare/claude-opus-4-5-vs-gpt-6-astra)

## Explore More

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