kimi-k3 — API, Pricing & Context Window | Vivgrid
Run Moonshot AI's kimi-k3 on Vivgrid: a frontier coding model with a 1M-token context window, 128K max output, tool calling, and an OpenAI-compatible API.
kimi-k3 is Moonshot AI's frontier model for coding, reasoning, and agentic workflows. It expands the Kimi family to a 1M-token context window with up to 128K output tokens, allowing agents to reason over large repositories and complete substantial engineering tasks in a single run.
Vivgrid exposes kimi-k3 through the unified, OpenAI-compatible Chat Completions API (/chat/completions). You can use the same API key, client libraries, billing, and observability as the rest of the Vivgrid model catalog.
Specifications
| Provider | Moonshot AI |
| Model ID | kimi-k3 |
| Best for | Coding |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Modalities | Text, Image |
| Tool / function calling | Yes |
| Knowledge cutoff | 2026-06 |
| Acceleration | 🌐 Global (Centralized) |
Pricing
Pricing in USD per 1M tokens, matching the provider's rates.
| Input | Cached input | Output |
|---|---|---|
| $3.00 | $0.30 | $15.00 |
Quick start
Call kimi-k3 through Vivgrid's unified, OpenAI-compatible endpoint. Get an API key from the Vivgrid Console.
curl https://api.vivgrid.com/v1/chat/completions \
-H "Authorization: Bearer $VIVGRID_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kimi-k3",
"messages": [
{ "role": "user", "content": "Say hello in English, Chinese and Spanish." }
],
"stream": true
}'Ideal use cases
- Long-context coding agents and repository-scale refactoring
- Complex software engineering, debugging, and code review
- Tool-calling agents that need dependable multi-step reasoning
- Teams seeking a high-capability alternative to frontier US models
Related models
- kimi-k2.6 — the prior Kimi coding generation
- glm-5.2 — a competitive 1M-context coding model
- minimax-m3 — a lower-cost coding alternative
- claude-opus-5 — Anthropic's flagship coding model