Kimi K2.5 API

Kimi K2.5 is a large language model by Moonshot AI, available on the Venice API as kimi-k2-5. It runs privately, with zero data retention.Kimi K2.5 is Moonshot AIs most advanced open reasoning model, featuring trillion-parameter Mixture-of-Experts architecture with 32B active parameters and 256K context windows.

Kimi K2.5 API pricing

Model ID	Variant	Privacy	Price
`kimi-k2-5`	Standard	Private	$0.56 input /$ 3.50 output per 1M tokens

Kimi K2.5 specifications

Spec	Value
Provider	Moonshot AI
Released	Jan 27, 2026
Privacy	Private
Open weights	Yes
Context window	250K tokens
Max output	64K tokens
Reasoning effort	Not adjustable

How to use the Kimi K2.5 API

Send requests to POST https://api.venice.ai/api/v1/chat/completions with "model": "kimi-k2-5" and your API key.

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k2-5",
    "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }]
  }'

Kimi K2.5 API FAQ

How much does the Kimi K2.5 API cost?

0.56 per 1M input tokens and

3.50 per 1M output tokens, with cached input at $0.22 per 1M. Prices are in USD and can be paid in DIEM at parity.

What is the Kimi K2.5 model ID?

Use kimi-k2-5 as the model parameter.

Is the Kimi K2.5 API private?

Kimi K2.5 is private: requests run on infrastructure Venice controls with zero data retention, and prompts and outputs are never stored or used for training.

What is the context window of Kimi K2.5?

250K tokens of context, with up to 64K output tokens per response.

What does Kimi K2.5 support?

Kimi K2.5 supports function calling, structured outputs, reasoning, image input, web search and prompt caching.

Which endpoint does the Kimi K2.5 API use?

Call POST /chat/completions. /responses (Alpha) is also supported.

Related models

Kimi K3 API: $3.75 input /$ 18.75 output per 1M tokens
Kimi K2.6 API: $0.75 input /$ 3.50 output per 1M tokens
Qwen 3.6 Plus Uncensored API: $0.63 input /$ 3.75 output per 1M tokens
Gemini 3 Flash Preview API: $0.70 input /$ 3.75 output per 1M tokens
Grok Build 0.1 API: $1.00 input /$ 2.00 output per 1M tokens
GLM 5 API: $1.00 input /$ 3.20 output per 1M tokens

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