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OpenAI launches Decisions API with input-only billing

By PulseAugur Editorial · [1 sources] ·

OpenAI has launched its Decisions API, a new service that charges solely for input tokens and offers output at no cost. This API is designed for tasks requiring structured outputs like classifications, routing, or scoring, rather than generating lengthy text. It utilizes the gpt-6-luna model and promises faster response times and reduced costs for specific use cases compared to traditional LLM APIs. OpenAI claims the Decisions API is approximately 10x faster, though this speed advantage has not been independently verified with accuracy comparisons. AI

IMPACT Reduces costs for classification and routing tasks, potentially accelerating adoption of LLMs in structured decision-making workflows.

RANK_REASON New product release from a frontier AI lab. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on dev.to — LLM tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

OpenAI launches Decisions API with input-only billing

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Signal score
57 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Significant
New product release from a frontier AI lab. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
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High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
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COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · Paul Lovelace ·

    OpenAI's Decisions API: Stop Paying for Words You Don't Read

    <p>Here's a pricing model I didn't expect to see: an LLM API that charges you <strong>$0 for output tokens</strong>.</p> <p>OpenAI's Decisions API entered public beta on October 6, 2026. It doesn't generate text. It returns decisions — a probability, a choice, or a score — and bi…

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