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Model comparison

Kimi K3 vs mistral-7b-instruct-v0.3

Kimi K3 (Moonshot) and mistral-7b-instruct-v0.3 (Mistral) 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.

Kimi K3mistral-7b-instruct-v0.3
Input price per 1M$0.304$0.028
Output price per 1M$11.94$0.054
Context window1M tokens127K tokens
Max output131K tokens127K tokens
Input typestext, image, videotext
Capabilitiestools, JSON, vision, reasoningtools, JSON
AuthorMoonshotMistral

What a month costs on each

WorkloadKimi K3mistral-7b-instruct-v0.3
Chatbot month (15M in, 4M out)$52.30$0.636
RAG month (40M in, 3M out)$47.97$1.28
Coding month (60M in, 10M out)$137.60$2.22

On a typical 75/25 input-output mix, mistral-7b-instruct-v0.3 costs less (about 99% less than Kimi K3). Kimi K3 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": "moonshotai/kimi-k3", "messages": [{"role": "user", "content": "Hello"}]}'

# the other one: change the model string
  -d '{"model": "mistralai/mistral-7b-instruct-v0.3", ...}'

Common questions

Which is cheaper, Kimi K3 or mistral-7b-instruct-v0.3?

mistral-7b-instruct-v0.3 is cheaper on a typical mix of 75% input and 25% output tokens, by about 99%. Through Rapid Router both are billed at the provider list price per million tokens.

Which has the larger context window?

Kimi K3, at 1M tokens. mistral-7b-instruct-v0.3 offers 127K tokens.

Can I switch between Kimi K3 and mistral-7b-instruct-v0.3 without changing code?

Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (moonshotai/kimi-k3 or mistralai/mistral-7b-instruct-v0.3).

How do I pay for Kimi K3 or mistral-7b-instruct-v0.3?

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

More Kimi models: Moonshot API pricing · More Mistral: Mistral API pricing