# Claude Haiku 5.5 vs GPT-5.4 mini

> Side-by-side benchmark comparison for Claude Haiku 5.5 and GPT-5.4 mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-5-5-vs-gpt-5-4-mini
- Last updated: October 7, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 5.5 and GPT-5.4 mini share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Claude Haiku 5.5 has the lower published output-token price.
- Claude Haiku 5.5 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Haiku 5.5 | GPT-5.4 mini |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 400K |
| Independent public score (not head-to-head) | 66.32 | 53.93 |
| Benchmarks Covered | 5 | 21 |
| Pricing (input/output) | $0.10 / $0.50 | $0.75 / $4.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: 62.1 (Supported · #18/122)
- GPT-5.4 mini public-lane score: 34.3 (Supported · #76/122)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 39.20% | Coming soon | Coming soon |
| HLE w/ tools | 57.4% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 60% | Coming soon |
| OSWorld-Verified | Coming soon | 72.1% | Coming soon |
| MCP Atlas | Coming soon | 57.7% | Coming soon |
| Toolathlon | Coming soon | 42.9% | Coming soon |
| τ²-bench results | Coming soon | 93.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 54.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: 60.9 (Supported · #20/146)
- GPT-5.4 mini public-lane score: 36.4 (Supported · #74/146)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 1.1 Main | 46.4% | 27.0% | Claude Haiku 5.5 |
| Vibe Code Bench | Coming soon | 47.97% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 81.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 73.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: 79.2 (Unranked · 2 rankable rows)
- GPT-5.4 mini public-lane score: 40 (Unranked · 4 rankable rows)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 63.70% | Coming soon |
| ARC-AGI-2 | Coming soon | 18.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: Coming soon
- GPT-5.4 mini public-lane score: 58.3 (#32/49)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 46.4% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 76.6% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 78% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: Coming soon
- GPT-5.4 mini public-lane score: 48.5 (Supported · #76/174)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| HLE w/o tools | 45.9% | 28.2% | Claude Haiku 5.5 |
| GPQA | Coming soon | 88% | Coming soon |
| HLE | Coming soon | 41.5% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 83.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 84.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: Coming soon
- GPT-5.4 mini public-lane score: 88.5 (#24/125)

### Mathematics

- Winner: Insufficient shared evidence
- Claude Haiku 5.5 public-lane score: Coming soon
- GPT-5.4 mini public-lane score: 44.3 (Unranked · 2 rankable rows)

| Benchmark | Claude Haiku 5.5 | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 28.280% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 2.080% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Haiku 5.5 and GPT-5.4 mini?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude Haiku 5.5 vs GPT-5.4 Pro](/compare/claude-haiku-5-5-vs-gpt-5-4-pro)
- [GPT-5.4 mini vs GPT-5.4 Pro](/compare/gpt-5-4-mini-vs-gpt-5-4-pro)
- [Claude Haiku 5.5 vs GPT-5.4](/compare/claude-haiku-5-5-vs-gpt-5-4)
- [GPT-5.4 mini vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-mini)

## Explore More

- [Claude Haiku 5.5 profile](/models/claude-haiku-5-5)
- [GPT-5.4 mini profile](/models/gpt-5-4-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)