Skip to content
Source · Daily Brief

AI Daily Brief — 4 September 2025

A heavy multi-thread Thursday. Sierra $350M at $10B. OpenAI Jobs Platform. WBD sues Midjourney. NVIDIA networking roadmap update.

Top stories

  • Sierra raises $350M Series C at $10B led by Greenoaks. Bret Taylor’s customer-service AI agent startup more than doubled October 2024 valuation. Hundreds of enterprise customers including SoFi, Ramp, Brex. Total funding $635M after ~18 months. Co-founded with former Google exec Clay Bavor. via TechCrunch
  • Sierra deal covered by Bloomberg + CNBC. Latest AI startup to cross $10B mark. Bret Taylor in dual role (Sierra CEO + OpenAI board chair). via Bloomberg
  • OpenAI announces AI-powered Jobs Platform to take on LinkedIn. Two new workforce initiatives: OpenAI Jobs Platform (AI-driven matching, mid-2026 launch) + OpenAI Certifications via OpenAI Academy. Goal: certify 10M Americans in AI fluency by 2030. Launch partners: Walmart, John Deere, BCG, Accenture, Indeed, Texas Association of Business, Bay Area Council, Delaware Governor’s office. via TechCrunch
  • Walmart commits to OpenAI Certification for 1.6M US associates. CPO Donna Morris memo: Walmart will deliver OpenAI Certification program free to all US-based associates via Walmart Academy when it launches 2026, customised to retail workflows. Part of Walmart’s $1B skills-training investment through 2026. via Walmart Corporate
  • Warner Bros. Discovery sues Midjourney. Filed copyright-infringement complaint in C.D. Cal., joining Disney and NBCUniversal. Alleges “systematic, ongoing and willful” infringement: Midjourney returning DC superheroes (Superman, Wonder Woman, Joker), Looney Tunes, Tom and Jerry, Scooby-Doo, Rick and Morty characters even for generic prompts. Midjourney recently removed guardrails on video generation. via Hollywood Reporter

Who shipped

Sierra shipped capital. OpenAI shipped a Jobs Platform commitment. WBD shipped a lawsuit.

Open-source pulse

NVIDIA updates networking roadmap as data centers shift to GPU-centric computing — framing data center as new unit of computing where GPUs (not CPUs) are primary unit. Set stage for Rubin CPX “massive-context” GPU unveiled five days later (Sep 9).

Money, infra & hardware

Coverage frames OpenAI Jobs Platform as response to AI-driven hiring slowdown. Fortune Sep 5 follow-up cast announcement as recognition AI is already making entry-level hiring harder; explicitly couples job matching with credentials — direct shot at LinkedIn Learning and Coursera. via Fortune

Quiet corners

Backdrop: Anthropic $13B Series F at $183B (Sep 2) still dominating, Sierra ($10B) and Mistral ASML round (announced Sep 8-9, $14B) bookended it. The week effectively reset floor on AI-agent and frontier-lab valuations. Spillover: Apple’s Sep 3 AI search plans dominate Sep 4 commentary — Bloomberg scoop that Apple building AI search engine (“World Knowledge Answers”) for Siri to rival OpenAI/Perplexity. Google-Siri talks advancing.

By the numbers

  • $350M / $10B / $635M — Sierra Series C / valuation / total raised
  • ~18 months — Sierra age
  • 10M / 2030 / 1.6M — OpenAI cert target / by year / Walmart associates
  • $1B / 2026 — Walmart skills-training investment / through year
  • Superman, Wonder Woman, Looney Tunes, etc. — WBD-cited Midjourney outputs

Compiled by AI Feed’s editor from verified web sources for 4 September 2025.