MoonshotAI: Kimi K3.1 Pro
moonshotai/kimi-k3.1-proKimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model, a post-trained successor to Kimi K3 with a 1M-token context window. It accepts text, image and video input and is built for long-horizon coding, agentic tool use and visual software work.
- Input price
- $2.00USD / 1M tokens
- Output price
- $10.00USD / 1M tokens
- Cache read
- $0.20USD / 1M tokens
- Cache write
- $2.00USD / 1M tokens
- Context window
- 1M
- Max output
- 131.1K
Specifications
- Input
- Text, image
- Output
- Text
Independent evaluations
Benchmarks
Scores on standardized evaluations, compared with other models on SandBase.
Metrics sourced from Artificial Analysis · Intelligence Index v5 · Updated 2026-10-29
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OpenAI-compatible endpoint with unified authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/chat/completions" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "moonshotai/kimi-k3.1-pro",
"messages": [
{
"role": "user",
"content": "Hello"
}
],
"max_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"Questions
FAQ
How do I call Moonshot AI Kimi K3.1 Pro through SandBase?
Create a SandBase API key, then send requests with the model ID "moonshotai/kimi-k3.1-pro" 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 K3.1 Pro cost?
$2 per 1M input tokens and $10 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.
What is the context window of Moonshot AI Kimi K3.1 Pro?
1M tokens of context, with up to 131.1K output tokens per response.
How does Moonshot AI Kimi K3.1 Pro score on benchmarks?
Moonshot AI Kimi K3.1 Pro scores 46.0 on the Artificial Analysis Intelligence Index (v5), ranking #8 of 21 models on SandBase. Source: Artificial Analysis, measured as Kimi K3.1 Pro.
Which features does Moonshot AI Kimi K3.1 Pro support?
Moonshot AI Kimi K3.1 Pro 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 K3.1 Pro and the other models in the catalog; you do not need to sign up with Moonshot AI separately.