OpenAI is deprecating the Assistants API. Zapier has deprecated all ChatGPT (OpenAI) actions that use it. On August 26, 2026, Zaps using these actions will stop working. If your Zaps use any of the affected actions, update them before that date.
What's changing
The following ChatGPT (OpenAI) actions are deprecated and hidden in the Zap editor:
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Actions:
- Conversation With Assistant (Legacy)
- Create Assistant
- Upload File (when used with assistants)
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Searches:
- Find Assistant
- Find or Create Assistant
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Dropdowns used in the actions above:
- List Assistants
- List Assistant Files
These actions are no longer available when creating new Zaps. Existing Zaps that use them will continue to run until August 26, 2026, after which they will stop working.
What Zapier is doing
Zapier will automatically migrate Zaps that use Conversation With Assistant (Legacy) to the new Conversation action (powered by the Responses API). You do not need to take any action for these Zaps.
After August 26, 2026, check your Zap history to confirm your migrated Zaps are running as expected.
NoteOther deprecated actions (Create Assistant, Find Assistant, Upload File, etc.) will not be automatically migrated. You must manually update Zaps that use these actions before August 26, 2026.
Find your affected Zaps
- Go to your Zaps.
- In the search or filter, select ChatGPT.
- Open each Zap and check if any action matches the deprecated actions listed above.
What to do next
Replace deprecated Assistants API actions with Responses API-based actions where possible, or redesign the workflow.
Recommended replacements
Use the Conversation action to replace Conversation With Assistant (Legacy). The Conversation action supports back-and-forth conversations with memory, file search, web search, and MCP tool support.
- Use Conversation for back-and-forth conversations with memory.
- Use Send Prompt for simple, one-off prompts that do not need memory.
After replacing the action, remap fields in later steps if needed, then test and publish your Zap.
Learn more about choosing the right ChatGPT (OpenAI) action to send messages.