For AI startups shipping on model APIs that keep changing
Migrations off retiring models, lower token bills, evals in CI and an independent architecture review, as fixed-scope sprints instead of another hire.
What firms like yours are paying for now
- Migrations off models that shut down on November 30, December 11 and January 14
- Lower token bills and latency without a worse product
- Evals in CI, especially for teams leaving OpenAI Evals
- An independent review before a fundraise, a large customer or a rewrite
Tools we connect to
- OpenAI
- Anthropic
- Azure AI Foundry
- AWS Bedrock
- Vertex AI
- LangSmith
- Promptfoo
- GitHub Actions
Timing. Most of this winter’s shutdowns land between November 30 and January 14, across the holidays.
Three packages that fit, with example scopes
Model-retirement migration sprint
Every model call inventoried, moved to one config and migrated, with a 50-prompt replay. $2,500.
LLM cost and latency reduction
Spend by model, stage and endpoint, and a priced list of savings. $1,500 audit, $3,500 implementation.
Agent reliability and evals harness
50–100 scenarios from real traffic, gated in GitHub Actions. $2,000–$3,500.
The rules we design around
And what each one changes in what we build.
| Rule | What it changes in the build |
|---|---|
| Short vendor notice | OpenAI announced the January 14 shutdown of GPT-4o and GPT-4.1 on October 14: 92 days. Model names end up in one config, so the next notice is a small change. |
| Your customers' data terms | What your contracts allow you to send to a model vendor decides which vendors and settings we use, including zero data retention. |
| Security questionnaires | Permissions, audit logging and data flow get written down, so the next enterprise questionnaire already has answers. |
We are engineers, not lawyers. These rules shape how we build; your counsel decides how they apply to you.
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.