GreyScript AI

Custom Model Development

Custom Model Development is a full build, usually 6 to 12 weeks, when a general-purpose model is not accurate enough for the domain. It covers fine-tuning on your data, an evaluation harness, model selection against cost, versioned prompts, and monitoring after launch.

Full buildUsually 6 to 12 weeks

Custom Model Development is a full build, usually 6 to 12 weeks, when a general-purpose model is not accurate enough for the domain. It covers fine-tuning on your data, an evaluation harness, model selection against cost, versioned prompts, and monitoring after launch.

Included

  • Fine-tuning on proprietary or domain-specific data
  • Evaluation harness design and benchmark tracking
  • Model selection and cost-performance tradeoff analysis
  • Prompt engineering as a documented, versioned artifact
  • Ongoing model performance monitoring post-launch

Questions about this service

What is included?

Included work covers fine-tuning on proprietary or domain-specific data, evaluation harness design and benchmark tracking, model selection and cost-performance tradeoff analysis, prompt engineering as a documented, versioned artifact, and ongoing model performance monitoring post-launch.

How long does this usually take?

This is a full build. The usual range is 6 to 12 weeks. Data access, a wider scope, or findings during discovery can move it. We flag a timeline change as soon as we see it, with the reason.

Are the examples on this page documented client results?

No. They are illustrative examples. The company in each one is anonymized, and the figures are not a documented client result. Each card links to the full write-up.

Not sure this is the right service?

30-minute scoping call. No deck, just questions.