Fixed-scope work on the AI systems you already run, or the one you need next
Each package has a written deliverable, a duration and a published price. Each starts with a small paid step, credited to the build if you go ahead within 30 days.
Scoping sprint
A written assessment with acceptance criteria, a proof on your own data where the package allows it, and a fixed quote for the build. The fee is credited to the build if you go ahead within 30 days.
- Price
- $1,200–$1,500
- Time
- 3–5 business days
Model-retirement migration sprint
For teams whose code calls models that shut down between November and January.
- Price
- $2,500
- Time
- 5 business days
Start with Migration audit, $1,200
Custom GPT migration
For ChatGPT Business and Enterprise workspaces with custom GPTs people rely on.
- Price
- $1,200
- Time
- 3 business days
Start with Inventory and migration plan, $400
Assistant that cites or refuses
For teams whose assistant answers from internal documents and gets it wrong.
- Price
- $3,000
- Time
- 10 business days
Start with Single-source starter, $1,200
Document extraction pilot
For firms re-typing invoices, leases, tax forms, rate confirmations or rent rolls.
- Price
- $1,500–$2,800
- Time
- 5–10 business days
Start with Proof on 10 documents, $750
LLM cost and latency reduction
For products and teams whose model spend is rising faster than usage.
- Price
- $1,500 audit
- Time
- 1 week audit; 1–2 weeks implementation
Start with Cost audit, $1,500
Architecture and readiness review
For founders and teams who want an independent review before or after building.
- Price
- $1,200–$1,500
- Time
- 3–5 business days
Start with the review itself
Agent reliability and evals harness
For teams running agents or LLM features without automated tests, or losing OpenAI Evals on November 30.
- Price
- $2,000–$3,500
- Time
- 1 week
Start with Baseline and plan, $1,200
Workflow automation (n8n, Claude, MCP)
For owners connecting email, CRM, documents and AI, and finding the joins break.
- Price
- $2,200
- Time
- 5–10 business days
Start with Two-day repair, $950
Financial data assistant (text-to-SQL)
For finance teams, advisers and fintechs who want answers from their own database.
- Price
- $4,500
- Time
- 10–15 business days
Start with One-week prototype, $1,500
Tell us what you have and what is going wrong.
A 20-minute call, then a written scope with acceptance criteria and a fixed price within one business day. If it isn't a fit, we'll say so on the call.
Or email hello@destello.us or call (628) 202-5322. We reply within one business day.