gpt-oss-120b

Liveby OpenAI

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...

Guide: GPT, Claude and Gemini from one key

At a glance

AI chat API by OpenAI, callable through Superpowers. It costs $0.037 in · $0.17 out per million tokens. Call it with one API key: POST /v1/run with "tool": "openrouter.openai-gpt-oss-120b", or over MCP with run_tool. 385 other providers in this category take the same input and can be compared side by side.

Ask your agent

Say it in your own words. Your agent picks this tool, fills in the details and brings back the answer.

Use gpt-oss-120b to summarize this contract in five bullet points.

Ask gpt-oss-120b to draft a friendly reply to this customer email.

How it works

Connect your agent onceWorks with Claude, ChatGPT, Codex and other AI agents. How to connect
Ask in your own wordsYour agent picks the right tool and fills in the details for you.
Pay only when it worksEach use comes out of your balance. If it fails, you aren't charged.

For developersTool id, API call and input schema

Tool id
Price per call: $0.00013 / 1K in + 500 out
Per 1M tokens: $0.037 in · $0.17 out

Call it

Also over MCP as run_tool

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"openrouter.openai-gpt-oss-120b","input":{"prompt":"Explain MCP in one sentence."},"idempotency_key":"example-request-1"}'

Input

5 fields · all optional

{
  "type": "object",
  "properties": {
    "prompt": {
      "type": "string"
    },
    "system": {
      "type": "string"
    },
    "messages": {
      "type": "array",
      "description": "OpenAI-style messages; overrides prompt"
    },
    "max_tokens": {
      "type": "integer",
      "default": 1024
    },
    "temperature": {
      "type": "number"
    }
  }
}