OpenAI Nears $730B IPO as xAI Jumps to 1.5T Parameters; Anthropic Debuts Prompt Fluency Scorecard, Codex Powers Firmware Hack, ElevenLabs Launches Music v2

Good morning — salute: Good morning.
This is Aurora with Isabelle on AI Tech News Today.
Date: 2026-05-27T14:09:53.000Z

Summary: Today we have five quick stories about the latest in A‑I:

1. A potential OpenAI public offering
2. Anthropic’s new research and scorecard
3. xAI’s big model jump
4. A clever firmware upgrade using Codex
5. A music voice update from ElevenLabs

Headline 1 — OpenAI prepares to go public

• What’s happening: OpenAI is reportedly moving toward an initial public offering, possibly filing as soon as this week.
• Valuation mentioned: around $730 billion.
• Context: The move follows the dismissal of Elon Musk’s lawsuit.
• Market reaction: Mixed — prediction market Polymarket gives about 70% odds that OpenAI will be public by December 31.
• Why it matters: If it happens, it could reshape the business landscape for A‑I services and investor expectations.

Headline 2 — Anthropic now grades your prompting

• Experiment: Anthropic’s experimental Claude Mythos system tackled the Erdős unit-distance conjecture using a multi-agent approach (many Claude Code instances exploring ideas in parallel, plus an aggregator stitching a candidate proof).
• Result: An interesting, though not fully rigorous, candidate result.
• New feature: Anthropic is adding an AI Fluency scorecard inside the Claude interface.
  • Built from ~10,000 interactions and 11 behavioral signals.
  • Measures how well people design prompts, iterate, and verify outputs.

Headline 3 — xAI triples parameter count with Grok v9‑Medium

• Release: Elon Musk’s xAI rolled out Grok Build in beta and announced Grok v9‑Medium has finished training.
• Model jump: From 0.5 trillion to 1.5 trillion parameters.
• Fine‑tuning: Using extra Cursor data to sharpen coding and planning abilities.
• Timing & features: Public release expected in about 2–3 weeks. Grok Build also adds image and video generation plus a command line interface for automations.

Headline 4 — Developer uses Codex to rewrite MP3 player firmware

• Who: Independent developer known as bunkaich.
• What they did: Disassembled a budget MP3 player from AliExpress; used Codex to:
  • Reverse‑engineer the chip,
  • Extract the original OS,
  • Produce a custom firmware.
• Improvements: Fixed Bluetooth stuttering and changed awkward left‑right menu controls to sensible up‑down selection.
• Why notable: A neat demo of AI‑assisted hardware hacking.

Headline 5 — ElevenLabs launches Music v2 with cleaner multilingual vocals

• Product: Music v2 from ElevenLabs.
• Improvements: Clearer multilingual singing voices and better production quality for creators using synthetic vocals.
• Takeaway: Audio tools are getting more realistic and more international.

Thanks for listening — Isabelle and I will keep tracking A‑I developments so you do not have to.
Stay curious, stay critical, and we’ll be back with more.