MoonshotAI: Kimi K3 API Pricing
MoonshotAI: Kimi K3 costs $0.239 per 1M input tokens and $11.94 per 1M output tokens (cache reads: $0.210). Context window: 1.0M. Prices verified 2026-10-21 · source
Alternatives to consider
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Token economics
| Token type | Price | vs base input |
|---|---|---|
| Standard input | $0.239 | — |
| Cache read | $0.210 | −12% |
| Output | $11.94 | — |
Prompt caching stores repeated context server-side: reads cost far less, but writes carry a one-time premium.
Higher effort = deeper thinking = more reasoning tokens billed as output.
What would MoonshotAI: Kimi K3 cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $49.66 |
| Coding agent | 5,000 | 8,000 / 2,000 | $128.92 |
| RAG pipeline | 30,000 | 4,000 / 500 | $207.72 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $33.43 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About MoonshotAI: Kimi K3
Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at...
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Frequently asked questions
How much does MoonshotAI: Kimi K3 cost?
MoonshotAI: Kimi K3 costs $0.239 per 1M input tokens and $11.94 per 1M output tokens; cached input tokens cost $0.210 per 1M. Verified 2026-10-21 — provider source.
What is the context window?
1.0M tokens, with up to 944K output tokens per response. That's roughly 1311 pages of text in a single request.
Does it support prompt caching?
Yes — cached input is $0.210/1M, about 12% cheaper than standard input. Agents and RAG workloads with repeated context benefit most.
What's a cheaper alternative?
ScaleDown: Summarize saves about 99% on a typical workload with comparable quality.
Official resources
- MoonshotAI: Kimi K3 on OpenRouter — live endpoint, pricing source of record.
- Artificial Analysis benchmarks → — independent intelligence and performance analysis.
- Shred your current bill — paste a CSV and see if switching saves money.