OpenCode + Kimi For Coding (K2.5) Setup

opencode-kimi-setup.md

OpenCode + Kimi For Coding (K2.5) Setup

1. Add credentials

opencode auth login
# Select "Kimi For Coding"
# Enter your API key (sk-kimi-...)

2. Add provider to opencode.jsonc

{
  "provider": {
    "kimi-for-coding": {
      "name": "Kimi For Coding",
      "npm": "@ai-sdk/anthropic",
      "options": {
        "baseURL": "https://api.kimi.com/coding/v1"
      },
      "models": {
        "k2p5": {
          "name": "Kimi K2.5",
          "reasoning": true,
          "attachment": false,
          "limit": {
            "context": 262144,
            "output": 32768
          },
          "modalities": {
            "input": ["text", "image", "video"],
            "output": ["text"]
          },
          "options": {
            "interleaved": {
              "field": "reasoning_content"
            }
          }
        }
      }
    }
  }
}

3. Use the model

{
  "model": "kimi-for-coding/k2p5"
}

Key Details

Setting	Value
Provider ID	kimi-for-coding
Model ID	k2p5
SDK	@ai-sdk/anthropic
Base URL	https://api.kimi.com/coding/v1

Important Fix (Jan 2026)

If you get error: thinking is enabled but reasoning_content is missing in assistant tool call message

Solution 1: Add interleaved option (shown above)

The interleaved.field: "reasoning_content" option tells OpenCode how to handle the thinking/reasoning output.

Solution 2: Update DCP Plugin to v1.2.8+

If using @tarquinen/opencode-dcp, update to v1.2.8+ which has the fix for DeepSeek/Kimi models.

If using OCX (kdcokenny/ocx):

OCX stores configs in ~/.opencode/opencode.jsonc (NOT ~/.config/opencode/). Edit directly:

# Update DCP to latest
sed -i 's/@tarquinen\/opencode-dcp@[0-9.]*/@tarquinen\/opencode-dcp@latest/' ~/.opencode/opencode.jsonc

# Clear caches to force fresh resolution
rm -rf ~/.cache/opencode ~/.bun/install/cache

# Restart OpenCode

Config file hierarchy (OCX):

Location	Purpose
~/.opencode/opencode.jsonc	Active config (OCX local working dir)
~/.config/opencode/profiles/default/opencode.jsonc	Profile template
~/.config/opencode/opencode.json	Main config

See: OpenCode Issue #10996

Get your API key at kimi.com/code

Thanks for this brother! Jazakallahu Khayran

Wa iyyakum