Model comparison
Claude Haiku 5.5 vs Grok Build 0.1
Claude Haiku 5.5 (Anthropic) and Grok Build 0.1 (xAI) side by side: what each costs per million tokens through Rapid Router, how much context each takes, what each supports, and where independent benchmarks place them. Same API, same key; switching is a one-string change.
| Claude Haiku 5.5 | Grok Build 0.1 | |
|---|---|---|
| Input price per 1M | $0.100 | $1.00 |
| Output price per 1M | $0.500 | $2.00 |
| Context window | 1M tokens | 256K tokens |
| Max output | 128K tokens | 256K tokens |
| Input types | text, image, pdf | text, image, pdf |
| Capabilities | tools, JSON, vision, reasoning | tools, JSON, vision, reasoning |
| Author | Anthropic | xAI |
What a month costs on each
| Workload | Claude Haiku 5.5 | Grok Build 0.1 |
|---|---|---|
| Chatbot month (15M in, 4M out) | $3.50 | $23.00 |
| RAG month (40M in, 3M out) | $5.50 | $46.00 |
| Coding month (60M in, 10M out) | $11.00 | $80.00 |
On a typical 75/25 input-output mix, Claude Haiku 5.5 costs less (about 84% less than Grok Build 0.1). Claude Haiku 5.5 takes the longer prompt at 1M tokens. Try your own numbers in the cost calculator.
Call either one
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "anthropic/claude-haiku-5-5", "messages": [{"role": "user", "content": "Hello"}]}'
# the other one: change the model string
-d '{"model": "x-ai/grok-build-0.1", ...}'Common questions
Which is cheaper, Claude Haiku 5.5 or Grok Build 0.1?
Claude Haiku 5.5 is cheaper on a typical mix of 75% input and 25% output tokens, by about 84%. Through Rapid Router both are billed at the provider list price per million tokens.
Which has the larger context window?
Claude Haiku 5.5, at 1M tokens. Grok Build 0.1 offers 256K tokens.
Can I switch between Claude Haiku 5.5 and Grok Build 0.1 without changing code?
Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (anthropic/claude-haiku-5-5 or x-ai/grok-build-0.1).
How do I pay for Claude Haiku 5.5 or Grok Build 0.1?
Top up a Rapid Router balance by card in US dollars, and both models debit that balance per request.
More Claude models: Anthropic API pricing · More Grok: xAI API pricing