Claude Haiku 4.5 vs Grok 4.5
Claude Haiku 4.5 (Anthropic) and Grok 4.5 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- Grok 4.5 leads on overall intelligence (ECI 154 vs 143).
- Claude Haiku 4.5 is cheaper on input tokens — $1.00 vs $2.00 per 1M.
- Grok 4.5 has a larger context window (500K vs 200K tokens).
- Grok 4.5 ranks higher for coding (91th vs 25th percentile).
| Attribute | Claude Haiku 4.5 | Grok 4.5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 143 | 154 |
| Coding | 25 | 91 |
| Math | 13 | 85 |
| Reasoning & Knowledge | 12 | 70 |
| Agentic & Tools | 23 | 75 |
| Specifications | ||
| Developer | Anthropic | xAI |
| Family | Claude | Grok |
| Released | Oct 15, 2025 | Jul 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 200K | 500K |
| Price — $/M input | $1.00 | $2.00 |
| Price — $/M output | $5.00 | $6.00 |
| Inputs | text, image, file | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 67% | 98% |
| APEX | 9% | 34% |
| ARC-AGI | 48% | 87% |
| ARC-AGI-2 | 4% | 53% |
| FrontierMath | 6% | — |
| FrontierMath Tier 4 | 2% | — |
| GPQA Diamond | 71% | 93% |
| MATH Level 5 | 96% | — |
| SimpleQA Verified | 6% | 54% |
| Terminal-Bench | 36% | — |
| WebDev Arena | 1322 | 1551 |
| WeirdML | 45% | 46% |
| Humanity's Last Exam | — | 40% |
| SciCode | — | 54% |
| SimpleBench | — | 70% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Haiku 4.5 better than Grok 4.5?
On Epoch AI's Capabilities Index, Grok 4.5 scores higher (154) than Claude Haiku 4.5 (143). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, Claude Haiku 4.5 or Grok 4.5?
Claude Haiku 4.5 is cheaper on input tokens at $1.00 per million, versus $2.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Haiku 4.5 or Grok 4.5?
Grok 4.5 supports up to 500K tokens, compared with 200K for the other.
Which is better for coding, Claude Haiku 4.5 or Grok 4.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.5 ranks higher — 91th vs 25th percentile among the models tracked on Model Beat.
Want a different match-up? Open the compare tool to add or swap models.
More comparisons
Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.