# Claude Haiku 4.5 vs Grok 4

> Side-by-side benchmark comparison for Claude Haiku 4.5 and Grok 4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 4.5 and Grok 4 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.
- Grok 4 has the lower published output-token price.
- Claude Haiku 4.5 has the larger published context window at 200K.

## Model Snapshot

| Property | Claude Haiku 4.5 | Grok 4 |
|----------|----------|----------|
| Creator | Anthropic | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 128K |
| Independent public score (not head-to-head) | 42.47 | 52.6 |
| Benchmarks Covered | 10 | 4 |
| Pricing (input/output) | $1.00 / $5.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 22 (Supported · #96/117)
- Grok 4 public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Grok 4 | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 43.8% | Coming soon | Coming soon |
| Gert Labs | Coming soon | 42.34% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 19.6 (Supported · #124/143)
- Grok 4 public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Grok 4 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | Coming soon | Coming soon |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | Coming soon | Coming soon |
| SWE-bench (Vals) | 66.6% | Coming soon | Coming soon |
| React Native Evals | Coming soon | 72.6% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: Coming soon
- Grok 4 public-lane score: 69 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: Coming soon
- Grok 4 public-lane score: 62.5 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 34.8 (Estimated · #119/169)
- Grok 4 public-lane score: 48.5 (Estimated · #65/169)

| Benchmark | Claude Haiku 4.5 | Grok 4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 78.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: Coming soon
- Grok 4 public-lane score: 62.9 (#71/124)

### Mathematics

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 28.8 (Unranked · 2 rankable rows)
- Grok 4 public-lane score: 38.3 (Unranked · 2 rankable rows)

| Benchmark | Claude Haiku 4.5 | Grok 4 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.903% | 19.655% | Grok 4 |
| FrontierMath v2 (Tier 4) | 2.083% | 2.083% | Tie |

## FAQ

### Is there enough evidence to pick between Claude Haiku 4.5 and Grok 4?

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

## Explore More

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