whereismyai
Decisions API
Decisions API is the OpenAI Decisions API picks among options a developer defines and returns the answer with a confidence score in about 150 ms.
The Decisions API is an OpenAI endpoint announced at DevDay on September 29, 2026. Instead of generating text, it takes a context (text or an image) and a closed list of options you define, and returns the most likely option with a confidence score, in about 150 milliseconds. It is built on a specialized version of GPT-6 Luna and aimed at classification, routing and choosing an agent's next step. It launched in limited preview.
Decisions API at a glance
- Best for: Software engineer
- Runs on: API
- Pricing: Limited preview; pricing not announced yet.
- Released: September 2026
- Category: AI coding tool
- Website: openai.com
Key features
- Returns one of your predefined options with a confidence score
- About 150 ms per decision
- Accepts text or image context
- Built on a specialized GPT-6 Luna model
Use it for
- Classify and route support requests
- Moderate or tag content
- Choose an agent's next action
Alternatives to Decisions API
- OpenAI API — Direct access to OpenAI's latest models with built-in tools
- OpenRouter — Access over 500 models and 80 providers through one unified API.
- Nouli — It gives stateless decision models a persistent memory across branching sessions.
- Ollaya — Run decision models locally with typed, calibrated answers in milliseconds.
- New API — Unifies access to 30 plus AI providers with intelligent routing and cost control.
- Project STROT — Runs locally at zero marginal cost with typed JSON outputs and confidence-based abstention.
- MLX Direct Decider — Runs local MLX decisions without fine-tuning or extra weights.
- AG-UI — Standardizes agent-user interactions and generative UI for applications.
- OpenCode — Works with 75+ model providers, local models, and existing subscriptions
- OpenChamber — Run and review multi-model AI coding agents from desktop, browser, and mobile devices.
- OpenAI Agents SDK — Provider-agnostic multi-agent framework with built-in guardrails and tracing.
- Milliseconds — It costs $0.04 per million input tokens with free output tokens.
All Decisions API alternatives