The a16z Podcast
The a16z Podcast

California's Senate Bill 1047: What You Need to Know

On May 21, the California Senate passed bill 1047. This bill – which sets out to regulate AI at the model level – wasn’t garnering much attention, until it slid through an overwhelming bipartisan vote of 32 to 1 and is now queued for an assembly vote in August that would cement it into law. In this

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Executive Summary: The episode argues that California SB 1047 would overregulate AI by tying liability to model size and training cost instead of harmful uses, creating vague, shifting compliance burdens that would chill startups, open source, and academic research. The speakers contend fast hardware and algorithmic progress will make fixed thresholds obsolete, and urge listeners to oppose the bill and focus regulation on malicious applications and AI security.

Main Topics: SB 1047 and why it matters (Priority: 5/5): The bill is framed as a major policy turning point because it passed the California Senate with broad bipartisan support and could become a nationwide precedent for AI regulation. Compute and cost thresholds as flawed regulatory triggers (Priority: 5/5): The discussion explains FLOPs and argues that fixed thresholds like 10^26 FLOPs or a $100 million training cost will rapidly become outdated as compute gets cheaper and models get more efficient. Liability and criminal risk for model developers (Priority: 5/5): The speakers criticize provisions that could make developers civilly and criminally liable for downstream misuse, arguing this is impossible to comply with and would push innovation offshore. Open source as a foundation of AI progress (Priority: 4/5): Open source is presented as essential to modern generative AI development, and the bill is said to threaten collaboration, transparency, and the ecosystem that enables startup innovation. Regulating misuse vs. regulating models (Priority: 5/5): The core policy recommendation is to target harmful uses, bad actors, and AI security threats rather than imposing blanket safety obligations on the model layer itself. Historical precedent and obsolescence of tech regulation (Priority: 4/5): The episode cites Cold War export controls and past examples where rapidly changing technology outpaced regulation to show why static definitions are likely to fail again. How listeners can respond (Priority: 4/5): Viewers are urged to read the bill, contact California assembly members, and speak publicly online to oppose SB 1047 before the August vote.

Key Arguments: Regulation tied to a fixed FLOP threshold is inherently unstable because model capability is improving faster than legal definitions can adapt. The cost of reaching a given AI benchmark is falling dramatically, meaning today’s frontier thresholds will soon apply to many startups and open-source projects. Civil and criminal liability for downstream misuse is an unreasonable standard because developers cannot control or predict all fine-tuning and derivative uses. Broad liability will discourage founders, researchers, and open-source builders from working in California and may push AI development offshore. Open source has been central to AI progress and should be protected because it increases transparency, collaboration, and defensive security. The real policy priority should be AI security and enforcement against known abuses like phishing, deepfakes, misinformation, and other malicious uses. Historical regulatory examples show that technology-specific definitions become obsolete quickly when innovation advances rapidly. A new regulatory agency funded by fees and fines could create regulatory capture and give large incumbents an advantage over startups.

Data Points: California Senate vote on SB 1047: 32 to 1 - The bill passed with overwhelming bipartisan support in the California Senate. Proposed model-compute threshold: 10^26 FLOPs - Used in the bill and referenced alongside federal reporting requirements to define covered models. Proposed training-cost amendment: $100 million - An amendment floated to narrow the bill’s scope to models above this training cost. GPU cost decline: Halving every 2 to 2.5 years - Used to argue that training a model becomes much cheaper over time due to hardware improvements. Benchmark capability cost decline: Roughly half every 14 months or less - Cited as algorithmic efficiency gains that reduce the compute required for the same model performance. Combined cost decline: About 50x every 5 years - Estimate for how quickly the cost to reach a given capability benchmark is falling when hardware and algorithmic progress are combined. Five-year cost example: $100 million to about $2 million - Illustrative estimate for the same benchmark by 2029. Ten-year cost example: About $40,000 to $50,000 - Illustrative estimate for the same benchmark by 2034. Alternative ten-year estimate for a $1 billion model: About $400,000 - Used to show that even extremely expensive training runs could become accessible over time. AI legislation count: Over 600 new pieces - Describes the broader wave of AI legislation circulating in the United States. Assembly vote timeline: August, less than 90 days away - The bill is headed to an Assembly vote soon after the Senate passage. Fine-tuning dataset example: 70,000 shared GPT conversations - Cited as an example showing that relatively little compute/data can transform a base model substantially.

Pivotal Quotes: "No rational startup founder or academic researcher is going to risk jail time or financial ruin just to advance the state of the art in AI." — Ajay Mita: On the chilling effect of civil and criminal liability in SB 1047. "The cost to reach any given benchmark of reasoning of capability is dropping by about 50 times every five years." — Narrator/host framing the discussion: Introduces the argument that static compute thresholds will quickly become obsolete. "There’s no chance we’d be here without open source." — Ajay Mita: On the foundational role of open source in modern AI development.

Implications: If passed, SB 1047 could become a template for broader AI regulation, increasing legal risk for startups and open-source builders while advantaging incumbents. The episode urges a shift toward misuse-focused rules and stronger AI security rather than model-level liability.

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About The a16z Podcast

The a16z Podcast discusses tech and culture trends, news, and the future – especially as ‘software eats the world’. It features industry experts, business leaders, and other interesting thinkers and voices from around the world. This podcast is produced by Andreessen Horowitz (aka “a16z”), a Silicon Valley-based venture capital firm. Multiple episodes are released every week; visit a16z.com for more details and to sign up for our newsletters and other content as well!

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