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Model comparison

Gemini 4 Argon vs Kimi K2.7 Code

Gemini 4 Argon (Google) 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.

Gemini 4 ArgonKimi K2.7 Code
Input price per 1M$4.00$2.85
Output price per 1M$20.00$14.25
Context window1M tokens262K tokens
Max output33K tokens262K tokens
Input typestext, image, video, audio, pdftext, image, video
Capabilitiestools, JSON, vision, audio, reasoningtools, JSON, vision, reasoning
AuthorGoogleMoonshot

What a month costs on each

WorkloadGemini 4 ArgonKimi K2.7 Code
Chatbot month (15M in, 4M out)$140.00$99.75
RAG month (40M in, 3M out)$220.00$156.75
Coding month (60M in, 10M out)$440.00$313.50

On a typical 75/25 input-output mix, Kimi K2.7 Code costs less (about 29% less than Gemini 4 Argon). Gemini 4 Argon 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": "google/gemini-4-argon", "messages": [{"role": "user", "content": "Hello"}]}'

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

Common questions

Which is cheaper, Gemini 4 Argon or Kimi K2.7 Code?

Kimi K2.7 Code is cheaper on a typical mix of 75% input and 25% output tokens, by about 29%. Through Rapid Router both are billed at the provider list price per million tokens.

Which has the larger context window?

Gemini 4 Argon, at 1M tokens. Kimi K2.7 Code offers 262K tokens.

Can I switch between Gemini 4 Argon 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 (google/gemini-4-argon or moonshotai/kimi-k2.7-code).

How do I pay for Gemini 4 Argon 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 Gemini models: Google API pricing · More Kimi: Moonshot API pricing