ModelSpec is an analysis of alternatives for AI models: it decides which models fit a job from your requirements, sourced benchmarks and real cost, and shows its work.

Use-case examples

Dated worked examples from the public Decide templates.

Worked example as of 2026-09-23, from the public data image.

By use

Coding

Writing

  • Writing, best available: Strongest writing evidence, cost no object. No recommendation from this image.
  • Writing, balanced: Writing quality first, cost as a real second term. No recommendation from this image.
  • Writing on a budget: At most $0.08 a task; writing still ranked. No recommendation from this image.
  • Writing, fastest: The fastest of the strong; only models within 1.0 of the strongest writing estimate compete, and speed decides among them. No recommendation from this image.
  • Writing, self-hosted: Open weights you run yourself; commercial licence. No recommendation from this image.

Maths and reasoning

Long documents

Retrieval and embeddings

General assistant

By constraint

High volume

Regulated data (HIPAA)

EU-only data

Human lookup is free on Decide. CLI, API, and MCP access requires a key. Access and pricing.

Use-case examples · How we decide

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