Claude Haiku 4.5 vs Grok 4
Direct comparison between anthropic and xai for chat models. Specs, prices, strengths, weaknesses — decide on facts.
At a glance
- · Cheaper: Claude Haiku 4.5
- · Longer context window: Grok 4 at 256,000 tokens
- · Claude Haiku 4.5: Very cheap per million tokens — good for bulk workloads
- · Grok 4: Only top-tier model with direct access to X realtime data
Spec comparison
| Spec | Claude Haiku 4.5 | Grok 4 |
|---|---|---|
| Provider | anthropic | xai |
| Input per 1M tokens | $1.00 / 1M | $3.00 / 1M |
| Output per 1M tokens | $5.00 / 1M | $15.00 / 1M |
| Context window | 200,000 tok | 256,000 tok |
| Max output | 8,192 tok | 16,384 tok |
| Knowledge cutoff | 2025-07 | — |
| Vision | ||
| Tool calling | ||
| Structured output | ||
| Reasoning |
Claude Haiku 4.5 — strengths
- +Very cheap per million tokens — good for bulk workloads
- +Low latency, comparable to Gemini 3 Flash
- +Vision-capable — rare in this price tier
Grok 4 — strengths
- +Only top-tier model with direct access to X realtime data
- +Strong reasoning, competitive with o1/o3 on math benchmarks
- +Less refusal bias on political or controversial topics
Claude Haiku 4.5 — weaknesses
- −Weaker on multi-step reasoning than Sonnet
- −Only 8k output tokens — no full files in one response
Grok 4 — weaknesses
- −Code generation behind Sonnet 4.6 and GPT-5.4
- −Weaker structured-output guarantees than OpenAI/Anthropic