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Mercury 2.5

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.

Pricing

Input
$0.042per 1M tokens
Output
$0.1575per 1M tokens
Cache read
$0.0042per 1M tokens
Max output
65,536tokens

OpenRouter's price plus OpenRouter's 5% platform fee. Deference adds no markup.

opencode.json

{
  "provider": {
    "deference": {
      "npm": "@ai-sdk/openai-compatible",
      "options": { "baseURL": "https://deference.si/v1", "apiKey": "{env:DEFERENCE_API_KEY}" },
      "models": { "inception/mercury-2.5": { "limit": { "context": 260000, "output": 65536 } } }
    }
  }
}
OpenCode, set up for Mercury 2.5

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