What is the context window of Decisions Fast, and how long can its output be?

Decisions Fast has a context window of 32K tokens (32,000), and its maximum output is 29K tokens (28,800).

Can Decisions Fast read images, audio, video or PDFs?

No. Its only input modality is text, so it cannot read images, audio, video or PDFs.

What are the closest alternatives to Decisions Fast?

Span-01 Lite by Respan, d1-ultra by Liquid AI and Microsoft-Decision-1 by Microsoft. They were matched on model kind and release date, with no comparable price. d1-ultra and Microsoft-Decision-1 have a blended price of $0.0315 per 1M tokens.

Who made Decisions Fast and when was it released?

Decisions Fast was made by Parallel. It was first listed on OpenRouter on November 6, 2026.

Decisions Fast

Parallel

Decisions Fast

Developer	Parallel
Listed	November 6, 2026
Context window	32K tokens
Max output	29K tokens
Input	Text
Output	Decisions
Website	parallel.ai

Part of a series on

Parallel

input: $0.00
output: $0.00
Context: 32Ktokens
Listed: 6d ago

Decisions Fast is Parallel's model for fast, web-grounded decisions, announced as the company's Decisions API launched on OpenRouter. The maker says it checks the live web and returns structured answers with probabilities and citations in under a second, pairing the speed of system-one models with real-time web data. It is intended for agents that need to make decisions using information gathered from the web at query time.