MoonshotAI: Kimi K3
moonshotai/kimi-k3Kimi K3 is Moonshot AI's flagship model, a 2.8-trillion-parameter open-weight mixture-of-experts model with native visual understanding and a 1M-token context. It is built on Kimi Delta Attention, a hybrid linear attention, plus Attention Residuals, and always runs in thinking mode with selectable effort. Moonshot positions it for long-horizon coding across large codebases and terminal tools, visual software tasks such as frontend and game work, and end-to-end knowledge work.
- Input price
- $2.70
$3.00USD / 1M tokens - Output price
- $13.50
$15.00USD / 1M tokens - Context window
- 1M
- Max output
- 131.1K
Try the model
Playground
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Choose an example or write a prompt, then click Run.
Model card
Specifications
Pricing
- Input
- $2.70 / 1M tokens
- Output
- $13.50 / 1M tokens
- Cache read
- $0.27 / 1M tokens
- Cache write
- $2.70 / 1M tokens
Context & modalities
- Context window
- 1,048,576 tokens
- Max output
- 131,072 tokens
- Input
- Text, image
- Output
- Text
Capabilities
- Chat
- Supported
- Vision
- Supported
- Reasoning
- Supported
- Structured output
- Supported
- Function calling
- Supported
- Audio input
- Not supported
Access
- Provider
- Moonshot AI
- Model ID
- moonshotai/kimi-k3
- Execution
- sync
- Base URL
- https://api.sandbase.ai
- API
- Chat Completions API
- Endpoint
- /v1/chat/completions
Independent evaluations
Benchmarks
Scores on standardized evaluations, compared with other models on SandBase.
Metrics sourced from Artificial Analysis · Intelligence Index v4.3
Start building
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/chat/completions" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "moonshotai/kimi-k3",
"messages": [
{
"role": "user",
"content": "Hello"
}
],
"max_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"Choose your model
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Questions
FAQ
How do I call Moonshot AI Kimi K3 through SandBase?
Create a SandBase API key, then send requests with the model ID "moonshotai/kimi-k3" to Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.
How much does Moonshot AI Kimi K3 cost?
$2.70 per 1M input tokens and $13.50 per 1M output tokens with the current 10% discount (list price $3 / $15), billed per request from your SandBase balance.
What is the context window of Moonshot AI Kimi K3?
1M tokens of context, with up to 131.1K output tokens per response.
How does Moonshot AI Kimi K3 score on benchmarks?
Moonshot AI Kimi K3 scores 43.6 on the Artificial Analysis Intelligence Index (v4.3), ranking #15 of 84 models on SandBase; Coding Index 76.2, Agentic Index 50.0. Source: Artificial Analysis, measured as Kimi K3 (Max).
Which features does Moonshot AI Kimi K3 support?
Moonshot AI Kimi K3 supports vision (image input), reasoning, function calling, structured output. See Specifications above for the full list.
Do I need a separate Moonshot AI account?
No. One SandBase API key and balance gives you access to Moonshot AI Kimi K3 and the other models in the catalog; you do not need to sign up with Moonshot AI separately.