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AI Daily Brief — 7 April 2025

A defining day for enterprise AI norms. Runway shipped Gen-4 Turbo, Meta’s GenAI head publicly denied the cheating allegations, Stanford’s annual AI Index landed with a 280x-inference-cost-collapse headline, and Shopify’s CEO told staff to prove a task can’t be done by AI before requesting headcount. Markets whipsawed on a fake tariff-pause rumor.

Top stories

  • Runway launches Gen-4 Turbo. 10-second video in ~30 seconds (~5x faster than Gen-4) at 5 credits/sec vs 12 for Gen-4. Image-to-video with text prompt, 720p, 24 fps, 5s/10s durations. Rolled out across all plans. via Runway
  • Meta VP Ahmad Al-Dahle denies Llama 4 cheating allegations. ‘We’ve also heard claims that we trained on test sets — that’s simply not true, and we would never do that.’ Acknowledged ‘mixed quality’ from Maverick and Scout across cloud providers, blamed configuration variance. Rumors originated on Chinese social media from a user claiming to have resigned in protest. via TechCrunch
  • Stanford HAI publishes 2025 AI Index. Cost of querying a GPT-3.5-equivalent model fell from $20/M tokens (Nov 2022) to $0.07/M tokens (Oct 2024) — a 280x drop. AI-related incidents hit a record 233 in 2024 (+56.4% YoY). Total corporate AI investment reached $252.3B in 2024 with private investment +44.5%. Chinese models closed the benchmark gap to near parity on MMLU/HumanEval. via Stanford HAI
  • Shopify CEO Tobi Lütke: AI usage ‘non-optional.’ Posted a ~1,300-word internal memo telling staff ‘reflexive AI usage is now a baseline expectation at Shopify.’ Teams must demonstrate why a task cannot be done by AI before requesting headcount; AI competency to become formal part of performance reviews and hiring. Widely covered as a template other CEOs would copy. via TechCrunch
  • Tech stocks whipsaw on tariff-pause rumor. S&P 500 briefly surged >7% intraday on an unfounded rumor of a 90-day tariff pause excluding China. White House Press Secretary called the report ‘fake news’ and the rally collapsed. S&P 500 closed -0.23%, Dow -0.91%, Nasdaq +0.10% after the largest intraday comeback since 2008. Three-day losses the worst since Black Monday.

Who shipped

Runway shipped Gen-4 Turbo. Stanford HAI shipped the AI Index. Meta spent the day in damage control. Shopify‘s Lütke set a new enterprise-AI norm.

Open-source pulse

No major open-weights drops dated Apr 7 — community still benchmarking Llama 4 Scout and Maverick.

Money, infra & hardware

Stanford AI Index headline numbers reframe the inference-cost discourse: a 280x drop in two years closes much of the gap between hyperscaler frontier-tier inference and small-model commodity inference.

Quiet corners

OpenAI, Anthropic, Google, NVIDIA, DeepSeek and Qwen all quiet on the day. An arxiv paper on ‘Concise Reasoning via Reinforcement Learning’ posted at arXiv:2504.05185 — relevant to the o1/R1-style verbosity problem.

By the numbers

  • 5x faster / 5 credits/sec — Gen-4 Turbo vs Gen-4
  • 280x — drop in GPT-3.5-equivalent inference cost (2022 → 2024)
  • 233 / +56.4% — AI-related incidents in 2024 / YoY growth
  • $252.3B / +44.5% — corporate AI investment / private investment growth
  • ~1,300 words — Lütke’s AI-mandate memo
  • Most-mentioned company: Meta (controversy) / Stanford HAI (data)

Compiled by AI Feed’s editor from verified web sources for 7 April 2025.