6 posts from the last 24 hours on temperature2.

What is backpropagation?

A three-page 1986 Nature paper is still, in automated form, the algorithm that runs every time any neural network learns from a mistake.

Fractile's Anthropic chip deal drives $6.5B valuation

Fractile is in talks to raise about $600M at a $6.5B valuation, up 6.5x since May, months after a $250M inference-chip supply deal with Anthropic.

Stripe's $7B+ OpenRouter buy bets on AI token routing

Stripe agreed to acquire AI model router OpenRouter for a price reported between $7 billion and $8 billion, folding a 400-model, 10-million-developer routing layer into its payments stack.

Nvidia's H200 chips reach China with nowhere to run them

Nvidia H200 chips reach China: ByteDance and Tencent each get 10,000, but Beijing is routing them to a Hong Kong that lacks the power to run them.

OpenAI pauses frontier training after Astra hits Critical

OpenAI halted its largest reinforcement learning run for at least two weeks after its next model, Astra, tripped the highest tier of its own Preparedness Framework.

Why Chinchilla's 20:1 Ratio No Longer Rules

Meta trained Llama 3 8B on 15 trillion tokens, about 75x more than DeepMind's 2022 Chinchilla law says is compute-optimal for a model that size, and did it on purpose.

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