September sponsors-only newsletter
Simon Willison’s Weblog 2 weeks ago 13
September sponsors-only newsletter editions were sent to existing or new sponsors via a provided access link.
Large Language Models
443 summarised stories about Large Language Models, each linking back to the original source. Browse all topics →
Key players
Saturday, 3 October 2026
[AINews] not much happened today
Latent Space 2 weeks ago 49 ● 20 sources
OpenAI priced GPT-6 Sol at $2 per million input tokens and $10 per million output tokens and reported better benchmark scores versus GPT-6 Sol and Astra on several agent-evaluation tests. GPT-6 Sol’s median Agent Arena cost was $0.56 per task, and it was described as 39% cheaper than GPT-6 Sol. The roundup shifts attention toward cost–performance changes, with Codex usage resets and updates to agent tooling and open-model releases filling the rest of the day’s AI news.
LWiAI Podcast #258 - Opus 5.5, Sol and Luna, Muse, DeepSeek-V4.1-Flash, Xi
Last Week in AI 2 weeks ago 30 ● 20 sources
LWiAI Podcast released episode #258 summarizing and discussing the previous week’s AI news, covering model releases, pricing changes, and policy/safety developments across multiple companies. It was recorded on 09/26/2026 and published late, with the next episode expected sooner. The roundup highlights new releases and updates such as Anthropic’s Opus 5.5, OpenAI’s cheaper GPT-6 Sol and Luna tiers, Meta’s Muse on Mac (and an Amazon block), plus research items like DeepSeek-V4.1-Flash and other evaluation and alignment studies.