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Model comparison

Claude Fable 5.1 vs Qwen3.7 Max

Claude Fable 5.1 (Anthropic) and Qwen3.7 Max (Qwen) 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 Fable 5.1Qwen3.7 Max
Input price per 1M$10.00$1.48
Output price per 1M$50.00$4.42
Context window1M tokens1M tokens
Max output128K tokens66K tokens
Input typestext, image, pdftext
Capabilitiestools, JSON, vision, reasoningtools, reasoning
AuthorAnthropicQwen

What a month costs on each

WorkloadClaude Fable 5.1Qwen3.7 Max
Chatbot month (15M in, 4M out)$350.00$39.83
RAG month (40M in, 3M out)$550.00$72.28
Coding month (60M in, 10M out)$1100.00$132.75

On a typical 75/25 input-output mix, Qwen3.7 Max costs less (about 89% less than Claude Fable 5.1). Claude Fable 5.1 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-fable-5-1", "messages": [{"role": "user", "content": "Hello"}]}'

# the other one: change the model string
  -d '{"model": "qwen/qwen3.7-max-2026-05-17", ...}'

Common questions

Which is cheaper, Claude Fable 5.1 or Qwen3.7 Max?

Qwen3.7 Max is cheaper on a typical mix of 75% input and 25% output tokens, by about 89%. Through Rapid Router both are billed at the provider list price per million tokens.

Which has the larger context window?

Claude Fable 5.1, at 1M tokens. Qwen3.7 Max offers 1M tokens.

Can I switch between Claude Fable 5.1 and Qwen3.7 Max 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-fable-5-1 or qwen/qwen3.7-max-2026-05-17).

How do I pay for Claude Fable 5.1 or Qwen3.7 Max?

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 Qwen: Qwen API pricing