Kimi K3 API pricing per million tokens
Kimi K3 costs $3 per million input tokens and $15 per million output, with a 1.05M context window.
AIGROW credit covers Claude Opus 5.5, Claude Fable 5.2, Claude Fable 5.1, GPT-6 Astra, Claude Sonnet 5.5, GPT-6.1 Sol, GPT-6.1 Terra, Grok 4.7 and Gemini 4 Argon. See API credit
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars per million tokens, standard rate, shortest context band. Number 24 of 256 on the Epoch Capabilities Index by Epoch AI, data of 12 November 2026. CC BY 4.0 Newer model: Kimi K3.1 Pro
- 1,000 support replies
- $15.00
- Cached input
- $0.30
- Context window
- 1,048,576 tokens
- Released
- Jul 2026
- Weights
- Open weights
From Moonshot AI’s own pages, 12 November 2026.
Kimi K3 costs $3 per million input tokens and $15 per million output tokens on Moonshot AI’s own API, and $0.30 for cached input. At those prices 1,000 support replies cost $15.00, the 10th most expensive of 49 priced models on our list.
AIGROW API credit per million input / output tokens: Claude Opus 5.5 $1.60 / $8.00, Claude Fable 5.2 $3.20 / $16.00, Claude Fable 5.1 $4.00 / $20.00, GPT-6 Astra $2.50 / $12.50, Claude Sonnet 5.5 $0.80 / $4.00, GPT-6.1 Sol $0.50 / $2.50, GPT-6.1 Terra $0.25 / $1.25, Grok 4.7 $0.50 / $1.50 and Gemini 4 Argon $1.00 / $5.00. That is up to 75% below list price. See API credit
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts Kimi K3 among the 49 models with a list price.
| Job | 1,000 runs | Among 49 |
|---|---|---|
| Support reply3,000 in, 400 out. | $15.00 | 10th most expensive |
| Document summary25,000 in, 1,000 out. | $90.00 | 10th most expensive |
| Agent task80,000 in (70,000 cached), 3,000 out. | $96.00 | 11th most expensive |
The token counts are ours, chosen to look like real work; the prices are Moonshot AI’s. All three jobs stay under 100,000 tokens a request, below every long-context surcharge on the list.
Kimi K3 on real small-business tasks
What the AIGROW benchmark measured when Kimi K3 was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 95% of 20 runs passed (95% interval 76 to 99%), 1st of 36 models.
- Cost per 1,000 passes
- $18.44, failed runs included.
- Answer time
- 15 s median, 78 s at the 90th percentile.
- Strongest and weakest
- Appointment scheduling (100% passed) and product descriptions (0%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Moonshot now calls it the previous-generation K3, next to Kimi K3.1 Pro. Cache write $3 (5 min TTL) or $6 (1 h TTL). Open weights on Hugging Face (moonshotai/Kimi-K3). Changelog gives the month only.
Kimi K3 against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs Claude Opus 5.5
- Moonshot's open-weight flagship against Anthropic's, aimed at the same long-horizon coding work for a quarter less.
- vs Claude Opus 5
- Kimi K3 is marketed for long-horizon coding and knowledge work, the same ground as Opus.
- vs GLM-5.3
- Open-weight frontier models released within two months of each other, with Kimi costing two to three times as much.
- vs Kimi K3.1 Pro
- Moonshot's new flagship against the previous-generation K3, a third cheaper on input and output.
Other Moonshot AI models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| Kimi K2.6Moonshot AI · open weightsNewer model: Kimi K3.1 Pro | $0.95 | $4.00 | 262K | $4.45 |
| Kimi K3.1 ProMoonshot AI · open weights | $2.00 | $10.00 | 1.05M | $10.00 |
Where the price comes from
- Moonshot AI
- platform.kimi.ai/docs/pricing/chat
Read on 12 November 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Compare Kimi K3 with 53 other models
The price list sets every model’s input and output price side by side, with what a support reply, a document summary and an agent task cost on each.
Prices checked 12 November 2026 · See them by release date