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OpenAI Developers Profile picture
@OpenAIDevs
Apr 8 • 3 tweets • 1 min read • Read on X
Introducing the Evals API.

You can now programmatically define tests, automate evaluation runs, and quickly iterate on prompts.

Evals are still available in the dashboard—and now through the API, so you can integrate them anywhere in your workflow. Image
Eval configuration, test data, and parameters for test runs are all just as configurable via API as they are in the evals UI in the dashboard.

Learn how the API works in the documentation: platform.openai.com/docs/guides/ev…
Having good evals in place for your applications helps you improve the quality of your model responses systematically.

Learn to test your prompts for regressions in the OpenAI Cookbook: cookbook.openai.com/examples/evalu…

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More from @OpenAIDevs

OpenAI Developers Profile picture
Nov 7
You can now get more Codex usage from your plan and credits with three updates today:

1️⃣ GPT-5-Codex-Mini — a more compact and cost-efficient version of GPT-5-Codex
2️⃣ 50% higher rate limits for ChatGPT Plus, Business, and Edu
3️⃣ Priority processing for ChatGPT Pro and Enterprise
GPT-5-Codex-Mini allows roughly 4x more usage than GPT-5-Codex, at a slight capability tradeoff due to the more compact model.

Available in the CLI and IDE extension when you sign in with ChatGPT, with API support coming soon. Image
Select GPT-5-Codex-Mini for easier tasks or to extend usage when you’re close to hitting rate limits.

Codex will also suggest switching to it when you reach 90% of your limits, so you can work longer without interruptions. Image
Read 4 tweets
OpenAI Developers Profile picture
Aug 21
Two big updates to the Responses API today.

🖇️ Connectors — Pull context from Gmail, Google Calendar, Dropbox, and more in a single API call.

💬 Conversations — Persist chat threads for your users, without running your own database.

More below:
Build rich experiences with connectors to:

- Read emails
- Fetch calendar events
- Search files and chats

Gmail, Google Calendar, Drive, Dropbox, Teams, Outlook Calendar + Email, and SharePoint are available now.

They work with deep research, too!

platform.openai.com/docs/guides/to…Image
Here’s a demo app that shows how you can connect your app to Google Calendar and fetch upcoming events: github.com/openai/openai-…
Read 4 tweets
OpenAI Developers Profile picture
Aug 15
Six tips for coding with GPT-5:
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Read 4 tweets
OpenAI Developers Profile picture
Aug 7
Here’s a megathread of GPT-5 already at work:
Read 20 tweets
OpenAI Developers Profile picture
Jun 26
Two new additions to the API:

📚 Deep research
🪝 Webhooks
o3-deep-research: platform.openai.com/docs/models/o3…
o4-mini-deep-research: platform.openai.com/docs/models/o4…

These models are the same post-trained o3 and o4-mini models that power deep research in ChatGPT.

They also support MCP (search/fetch) and Code Interpreter.
And instead of polling, webhooks now let you receive notifications for certain API events—such as completed responses, fine-tuning jobs, and batch jobs.

We recommend using webhooks for long-horizon tasks (like deep research!) to improve reliability.

platform.openai.com/docs/guides/we…
Read 4 tweets
OpenAI Developers Profile picture
Jun 16
🇵 🇷 🇴 🇲 🇵 🇹 🇸 are an API primitive now!

Centrally manage, version, and optimize prompts. Use (and reuse!) prompts across the Playground, API, Evals, and Stored Completions.
🆕 The Prompt object is a new resource that can be referenced in the Responses API and our SDKs. Prompts can be preconfigured too—including tools, models, and messages. No more manual copying and pasting!
And in the Playground:

⚡️️We’ve improved the “Generate” button. Now, hit “Optimize”, and your prompt will be even better optimized for the API.
🔡 Replacing “presets”, you can now save Prompts—including its versions and configurations—and reuse or share them.
Read 4 tweets

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