Claude Haiku 4.5 vs Grok 4
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Claude Haiku 4.5
Anthropic · Oct 2025
Anthropic's fast tier: Sonnet-4-class coding performance at $1/$5 and more than twice the speed.
Grok 4
xAI · Jul 2025
xAI's mid-2025 flagship, trained on the 200K-GPU Colossus cluster — a math and science reasoning standout of its generation.
The verdict
Grok 4 wins 1 of the 1 benchmarks these models share, against 0 for Claude Haiku 4.5. On price the gap is dramatic: Claude Haiku 4.5 works out roughly 3.0x cheaper per blended million tokens. Grok 4 also takes 256K of context versus 200K for Claude Haiku 4.5.
Benchmark head-to-head 0–1
Specs & pricing
| Claude Haiku 4.5 | Grok 4 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $1 | $3 |
| Output price / 1M | $5 | $15 |
| Context window | 200K | 256K |
| Max output | 64K | — |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image |
| Knowledge cutoff | Feb 2025 | Jul 2025 |
| Released | Oct 2025 | Jul 2025 |
| Example monthly cost* | $17.50 | $52.50 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Claude Haiku 4.5 or Grok 4?
- Grok 4 wins 1 of the 1 benchmarks these models share, against 0 for Claude Haiku 4.5. On price the gap is dramatic: Claude Haiku 4.5 works out roughly 3.0x cheaper per blended million tokens. Grok 4 also takes 256K of context versus 200K for Claude Haiku 4.5.
- Which is cheaper, Claude Haiku 4.5 or Grok 4?
- Claude Haiku 4.5 costs $1/$5 per million input/output tokens, while Grok 4 costs $3/$15. For a typical workload of 10M input and 1.5M output tokens per month, that's $17.50 versus $52.50.
- Which model is better for coding, Claude Haiku 4.5 or Grok 4?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.