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Model comparison

GLM-5.1 vs Kimi K2.7 Code

GLM-5.1 (Z.ai) and Kimi K2.7 Code (Moonshot) 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.

GLM-5.1Kimi K2.7 Code
Input price per 1M$0.900$2.85
Output price per 1M$4.00$14.25
Context window200K tokens262K tokens
Max output131K tokens262K tokens
Input typestexttext, image, video
Capabilitiestools, JSON, reasoningtools, JSON, vision, reasoning
AuthorZ.aiMoonshot

What a month costs on each

WorkloadGLM-5.1Kimi K2.7 Code
Chatbot month (15M in, 4M out)$29.50$99.75
RAG month (40M in, 3M out)$48.00$156.75
Coding month (60M in, 10M out)$94.00$313.50

On a typical 75/25 input-output mix, GLM-5.1 costs less (about 71% less than Kimi K2.7 Code). Kimi K2.7 Code takes the longer prompt at 262K 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": "z-ai/glm-5.1", "messages": [{"role": "user", "content": "Hello"}]}'

# the other one: change the model string
  -d '{"model": "moonshotai/kimi-k2.7-code", ...}'

Common questions

Which is cheaper, GLM-5.1 or Kimi K2.7 Code?

GLM-5.1 is cheaper on a typical mix of 75% input and 25% output tokens, by about 71%. Through Rapid Router both are billed at the provider list price per million tokens.

Which has the larger context window?

Kimi K2.7 Code, at 262K tokens. GLM-5.1 offers 200K tokens.

Can I switch between GLM-5.1 and Kimi K2.7 Code without changing code?

Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (z-ai/glm-5.1 or moonshotai/kimi-k2.7-code).

How do I pay for GLM-5.1 or Kimi K2.7 Code?

Top up a Rapid Router balance by card in US dollars, and both models debit that balance per request.

More GLM models: Z.ai API pricing · More Kimi: Moonshot API pricing