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Claude Haiku 4.5 vs Grok 4
A detailed comparison of Claude Haiku 4.5 (Anthropic) and Grok 4 (xAI) across pricing, performance, and features.
Pricing Comparison
| Metric | Claude Haiku 4.5 | Grok 4 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.80 | $3.00 | +275% |
| Output / 1M tokens | $4.00 | $15.00 | +275% |
| Context window | 200K | 128K | — |
| Max output | 8.192K | 16.384K | — |
Benchmark Comparison
| Benchmark | Claude Haiku 4.5 | Grok 4 |
|---|---|---|
| MMLU-Pro | 69.4% | 86% |
| HumanEval | 88.1% | 93% |
| GPQA | — | 72% |
Capabilities
| Capability | Claude Haiku 4.5 | Grok 4 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✗ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
| web-search | ✗ | ✓ |
Claude Haiku 4.5 Strengths
- ✓Very fast responses
- ✓Cheapest Anthropic option
- ✓Good for classification and extraction
Claude Haiku 4.5 Weaknesses
- ✗Weakest reasoning in the Claude family
- ✗Can struggle with nuanced instructions
Grok 4 Strengths
- ✓Built-in web search and real-time data
- ✓Strong reasoning
- ✓$25 free credits for new users
Grok 4 Weaknesses
- ✗Premium pricing for its benchmark tier
- ✗Additional charges for tool invocations ($2.50-$5/1K calls)
- ✗Smaller ecosystem than OpenAI/Anthropic
Quick Verdict
Best value: Claude Haiku 4.5 is the more affordable option at $0.8/$4 per 1M tokens.
Higher benchmarks: Grok 4 scores higher on average across available benchmarks (83.7% avg).
Larger context: Claude Haiku 4.5 supports 200K tokens.
Choose Claude Haiku 4.5 if cost matters most. Choose Grok 4 if you need the best possible quality for complex tasks.