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
- Coding, best available: Strongest coding evidence, cost no object.
- Coding, balanced: Coding strength first, cost as a real second term.
- Coding agent on a budget: At most $0.05 a task; coding still ranked.
- Coding, fastest: The fastest of the strong; only models within 1.0 of the strongest coding estimate compete, and speed decides among them. No recommendation from this image.
- Coding, self-hosted: Open weights you run yourself; commercial licence.
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
- Maths and proofs: Strongest maths evidence, cost no object.
- Maths and reasoning, balanced: Maths and reasoning together, with cost as a third term. No recommendation from this image.
- Maths and reasoning on a budget: At most $0.08 a task; maths still ranked.
- Maths and reasoning, fastest: The fastest of the strong; only models within 1.0 of the strongest maths estimate compete, and speed decides among them. No recommendation from this image.
- Maths and reasoning, self-hosted: Open weights you run yourself; commercial licence. No recommendation from this image.
Long documents
- Long documents, best available: Million-token context; strongest analysis, cost no object. No recommendation from this image.
- Long documents: Million-token context; quality first, cost as a tie-breaker. No recommendation from this image.
- Long documents on a budget: Room for a long document, cheapest task first. No recommendation from this image.
- Long documents, fastest: Million-token context; the fastest of the strong, by short-prompt speed. No recommendation from this image.
- Long documents, self-hosted: Open weights with a long context; commercial licence. No recommendation from this image.
Retrieval and embeddings
- Retrieval embeddings: Strongest retrieval evidence, cost no object.
- Retrieval embeddings, balanced: Retrieval quality first, cost as a real second term. No recommendation from this image.
- Retrieval embeddings on a budget: Cheapest hosted embedding; retrieval still ranked. No recommendation from this image.
- Retrieval embeddings, fastest: Fastest hosted embedding among the strong; only models within 1.0 of the strongest retrieval estimate compete. No recommendation from this image.
- Retrieval embeddings, self-hosted: Open weights you run yourself; commercial licence.
General assistant
- General assistant, best available: Most preferred responses, cost no object.
- General assistant, balanced: Response quality first, cost as a real second term.
- General assistant on a budget: At most $0.05 a task; quality still ranked.
- General assistant, fastest: The fastest of the strong; only models within 1.0 of the strongest response-quality estimate compete, and speed decides among them. No recommendation from this image.
- Private assistant you host yourself: Open weights you run yourself; commercial licence.
By constraint
High volume
- High volume, quality first: Short requests at scale; quality leads, cost counts.
- High volume, balanced: Short requests at scale; quality and cost weighted equally.
- High volume, good enough: Short requests at scale; cheapest first, quality kept.
- High volume, fastest: Short requests at scale; the fastest of the strong, cost counts. No recommendation from this image.
Regulated data (HIPAA)
- Regulated data, best available: HIPAA-ready offerings; strongest assistant, cost no object.
- Regulated data: HIPAA-ready offerings; quality first, cost second.
- Regulated data on a budget: HIPAA-ready offerings; cheapest first, quality kept.
EU-only data
- EU-only data, best available: Inference in the EU, no training; strongest assistant. No recommendation from this image.
- EU-only data handling: Inference in the EU, no training; quality first, cost second. No recommendation from this image.
- EU-only data on a budget: Inference in the EU, no training; cheapest first. No recommendation from this image.
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