⚠️ OpenAI shuts down the Assistants API on August 26, 2026 — that's 102 days away. Every day you wait is a day closer to a broken app.
⏰ DEADLINE: AUGUST 26, 2026

Your OpenAI assistant breaks on August 26. We make sure it doesn't.

OpenAI is permanently shutting down the Assistants API. Every app using assistants, threads, or runs — including Azure OpenAI — will stop working. We handle the entire migration to the Responses API.

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Your app goes dark on Aug 26

Assistants API, threads, runs, file search — all dead. No exceptions. No extensions.

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Migration isn't a copy-paste

Responses API has different patterns, tool handling, and thread management. One wrong assumption = broken features.

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Your customers find out first

If your assistant powers customer-facing features, the deadline isn't Aug 26 — it's whenever testing and QA finishes before that.

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Every day of delay costs you

Migration slots fill up. Engineers book out. The closer to the deadline, the more expensive and rushed it gets.

Fixed-fee migration. No surprises.

Pick the level that matches your needs. Every option includes a clear before/after map.

Migration Audit
£300 – £750
⚡ Delivered in 48 hours
  • Current API usage map
  • Responses API equivalence plan
  • Breakpoint risk register
  • Quick wins list
  • Implementation estimate
Book Audit →
⭐ MOST POPULAR
£1,000 – £4,000
⚡ 3–10 working days
  • Everything in Audit
  • Full endpoint migration
  • Tool/function compatibility
  • Thread/run flow mapping
  • Smoke tests + rollout checklist
  • 1 week post-migration support
Book Sprint →
Upgrade Retainer
£250 – £1,000/mo
Ongoing
  • Evals and QA monitoring
  • Prompt/tool tuning
  • Cost controls
  • Fallback handling
  • One new feature per cycle
Enquire →

Is this for you?

⚠️ This is NOT for you if:

  • You don't use the OpenAI Assistants API
  • You already migrated to Responses API
  • You want a full AI replatform (not a migration)
  • You're looking for the cheapest offshore option

✅ This IS for you if:

  • You shipped features using assistants, threads, or runs
  • Your assistant is customer-facing or internal-critical
  • You want it done right — parity first, then upgrades
  • You value a fixed price and clear timeline over open-ended consulting

How it works

1

Discovery Call

30 min — we map your current API usage and goals

2

Audit (48h)

Full usage map, risk register, migration plan delivered

3

Migration Sprint

Endpoints, tools, threads all migrated with smoke tests

4

Go Live + Support

Rollout checklist, monitoring, 1 week post-launch support

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Migration Guarantee

If we can't map a clean migration path, the audit is free. We only take on projects we're confident we can deliver.

Quick answers

Does this affect Azure OpenAI too?

Yes. Azure OpenAI's Assistants API retires the same day — August 26, 2026. The migration path is the same.

What if my app uses vector stores / file search?

The Responses API has native file search support. We map your current vector store setup to the new equivalents with parity testing.

How long does the migration actually take?

Audit: 48 hours. Standard migration sprint: 3–10 working days depending on complexity. We give you a fixed timeline after the audit.

What happens if we do nothing?

Your app stops working on August 26, 2026. API calls to assistants, threads, and runs will return errors. There is no grace period.

August 26 is closer than you think.

Book a 48-hour audit. Know exactly what needs to change — before the panic starts.

Book Your OpenAI Migration Audit →

Or email budzamar@gmail.com with "Migration Audit" in the subject