Claude Haiku 4.5 vs Grok 4.5
Claude Haiku 4.5 and Grok 4.5 are both current production-tier models. Grok 4.5 has a 500k context window — about 3× the 200k of Claude Haiku 4.5. Grok 4.5 leads on coding, reasoning, general knowledge.
Specs side by side
| Metric | Anthropic Claude Haiku 4.5 | xAI Grok 4.5 |
|---|---|---|
| Input price (per 1M) | $1 | $2 |
| Output price (per 1M) | $5 | $6 |
| Context window | 200k tokens | 500k tokens |
| Speed tier | fast | balanced |
| Open weights | No | No |
| EU region | Yes | No |
| Free tier | No | No |
| Prompt caching | Yes | Yes |
| Vision input | Yes | Yes |
| Extended thinking | No | Yes |
When to choose each
Choose Claude Haiku 4.5 if…
- EU data residency is required
- HIPAA eligibility is required
Choose Grok 4.5 if…
- You need 500k context (3× more than Claude Haiku 4.5)
- Coding is central to your workload
- Reasoning is central to your workload
Benchmark delta
Claude Haiku 4.5 leads on
Claude Haiku 4.5 has no meaningful benchmark lead in this pair.
Grok 4.5 leads on
- Coding
- Reasoning
- General knowledge
- Multilingual
- Vision
- Tool use
FAQ — Claude Haiku 4.5 vs Grok 4.5
Claude Haiku 4.5 vs Grok 4.5 — which is better?
Claude Haiku 4.5 and Grok 4.5 are both current production-tier models. Grok 4.5 has a 500k context window — about 3× the 200k of Claude Haiku 4.5. Grok 4.5 leads on coding, reasoning, general knowledge. The right pick depends on your use case — see "When to choose each" above for a data-driven decision.
How does Claude Haiku 4.5 pricing compare to Grok 4.5?
Claude Haiku 4.5 costs $1 / $5 per 1M vs Grok 4.5 at $2 / $6 per 1M. Claude Haiku 4.5 is cheaper on output tokens by roughly 20%. Both support prompt caching, which reduces effective cost by 80-90% on repeat system prompts.
Does Claude Haiku 4.5 or Grok 4.5 have the bigger context window?
Grok 4.5 has a 500k-token context window — 3× the 200k context of Claude Haiku 4.5. Enough for long reports and multi-document analysis.
Is there a free tier for Claude Haiku 4.5 or Grok 4.5?
Claude Haiku 4.5: no — No free API tier; new accounts get starter credits. Grok 4.5: no — X Premium / SuperGrok includes Grok web chat; API is paid.
Which is better for coding — Claude Haiku 4.5 or Grok 4.5?
Grok 4.5 leads on coding benchmarks (Claude Haiku 4.5: 82/100, Grok 4.5: 94/100). For production coding agents also weigh tool-use performance — Claude Haiku 4.5 scores 88, Grok 4.5 scores 92.