DevDay: New Plans and new platform for building AI apps

OpenAI appears to be preparing API onboarding with Free, Prototype, and Accelerate plans, guiding developers from testing ideas to production. The structure suggests a broader platform vision, though app hosting remains unconfirmed.

🗞 #openai @testingcatalog

BREAKING 🔥: Free, Prototype, and Accelerate plans are coming to the OpenAI Platform to allow users to build and host their own AI apps.

> Accelerate - "Starting at $50", "Access all of our latest models", "Higher usage & rate limits to power larger, production apps", "Accelerate building with the API in Codex and Playgrounds"

> These plans are likely to be announced during OpenAI DevDay, which would mean OpenAI would tap into the Vercel/Lovable space (though this is still speculation).

> Sam Altman recently shared: "And then we want you all to come up with great ideas and build them and to get to be happy users. The best ideas will come from you all.", which correlates very well with this assumption.

Accelerate anon 👀

GOOGLE 🔥: Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS are now live on Google AI Studio and APIs!

> "Flagship TTS model for Voice Design and dual-speaker screenplay control. Prompt custom vocal personas, direct line-by-line delivery, and add vocal bursts."

> "Our most expressive audio generation models yet.

TTeSting time! 👀

Mitra brings AI call handling to your existing number

Mitra’s new AI assistant manages calls, texts, email, scheduling, web tasks, and follow-ups from a user’s own accounts. It hands off routine work, lets users monitor or intervene live, and runs on a subscription with no data sales.

🗞 #sponsored @testingcatalog

Meta Connect keynote is happening soon, and there are high expectations for this event!

What do we expect? 🔮

- A new Watermelon class model.
- Muse Spark open source.
- Muse Video launch and API availability.
- New voice models and voice creation features.
- AI for banking and finance and Oracle Cloud integration.

Muse updates? 👀

- Connectors interface for Muse on the Meta Platform.
- Shared Muse agents.
- Telegram and Messenger support for Muse.
- Muse for Meta Glasses.
- Muse Mail.
- New shopping and payment features for Muse.
- Muse integration with Meta Business tools.
- Custom voices for Muse.

And obviously a lot more! What are your hopes?

Meta plans to announce "Meta Business Agent Platform" during Meta Connect, according to one of the scheduled event sessions.

> "Meta Business Agent Platform enables developers and businesses to deploy agents that transform a messaging thread into an always-on, full-funnel growth engine — capturing leads, closing sales, and supporting customers all in the same place."

BREAKING: Meta unveiled Muse Charm, a new AI pin hardware device that lets users communicate with their Muse agents from anywhere.

Shipping will start in December - will we get Muse globally by then too?

DAILY AI BRIEF 🗞 — Sept 24

META 🔥:
- Meta VR Glasses: first VR in glasses, not a headset. AI-native OS, Muse avatar, eye + hand + voice control.
- Muse now has voice and realtime video, and is coming to glasses for hands-free use all day.
- Muse Charm, a keychain pin for talking to Muse, ships in December.
- Meta Glasses get FDA-cleared hearing-aid mode. Private processing means Meta cannot see some on-device AI.

OPENAI 🔥:
- ChatGPT Voice now runs plugins (email, calendar, Slack) and GPT-6 Astra, Sol, and Luna.
- Voice is live in ChatGPT Work on web and mobile. Global rollout in the latest app.

GOOGLE 🔥:
- Gemini 3.8 Flash TTS and Flash-Lite TTS are live in AI Studio and the Gemini API.
- Custom voices across 100+ languages, or pick from 2,000+ stock voices. Flash hits Gemini Notebook; Flash-Lite hits Google Vids.
- Gemini app is rolling out new MCP connections: Linear, Airtable, Webflow, Monday, PandaDoc, and Wispr Flow.
- Koray says Gemini 4 is in early post-training and hopes for an early drop well before year-end.

ANTHROPIC 🔥:
- Claude Marketplace is live: Slack and Notion connectors, agents from Cursor and CrowdStrike, partners like Accenture.
- Cloud sessions leave research preview. One-time credits: $100 Pro, $250 Max. Claim by Oct 7.
- Projects in Claude Code can now run threads locally.

CURSOR 🔥:
- Rollouts watch deploys on Teams and Enterprise. Security Reviewer now averages 3.8 min.
- Token costs down 7% with no drop in agent quality.

ALIBABA 🔥:
- Qwen Intelligence ships three mobile agents. Mobile-Use hits 90% end-to-end success on real-device benches.
- Qwen-Audio-3.1 is out. TTS ~70% off, Realtime ~85% off, ASR up to 95% off.

* Used Grok to compose this brief, cherry-picking the news and doing some post-editing.
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