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Kimi K3 vs Mistral Medium 3.5 pricing

Prices

Kimi K3 and Mistral Medium 3.5 prices, USD per 1M tokens
USD per 1M tokensKimi K3Mistral Medium 3.5
Input$3.00$1.50
Output$15.00$7.50
Cache read$0.30$0.15
Cache write$3.00Not published
Batch inputNot publishedNot published
Batch outputNot publishedNot published

Moonshot AI's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Monthly cost by workload

WorkloadKimi K3Mistral Medium 3.5
Chatbot1,000 in / 500 out tokens, 10,000 requests a day$3,150/mo$1,575/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day$4,725/mo$2,363/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input$2,160/mo$1,080/mo

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Context and capabilities

Kimi K3Mistral Medium 3.5
Context1,048,576 tokens262,144 tokens
Max output1,048,576 tokens262,144 tokens
Inputtext, image, videotext, image
Tool callingYesYes
ReasoningYesYes
Structured outputsYesYes

Questions

What is the price difference between Kimi K3 and Mistral Medium 3.5?
Kimi K3: $3.00 per 1M input tokens and $15.00 per 1M output tokens. Mistral Medium 3.5: $1.50 per 1M input tokens and $7.50 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $3,150 per month for Kimi K3 and $1,575 for Mistral Medium 3.5.
Which has the longer context window, Kimi K3 or Mistral Medium 3.5?
Kimi K3 has the longer context window: up to 1,048,576 tokens, compared with 262,144 for Mistral Medium 3.5.
Do Kimi K3 and Mistral Medium 3.5 have prompt caching and batch prices?
Kimi K3: cached input $0.30 per 1M tokens; no batch price published. Mistral Medium 3.5: cached input $0.15 per 1M tokens; no batch price published.

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