Baseten(@baseten):The American open-weight ecosystem is growing. We're thrilled to support Poolside as they push open-weight coding models forward. Poolside's flagship model family is Laguna: open-weight agentic coding models built for long-horizon tasks. Today, they're releasing Laguna S 2.1, a 118B (8B active) MoE model with up to 1M context. @Madisonkanna sat down with @poolsideai Co-CEO @eisokant to talk about the launch, and what it means for the ecosystem:

2026.07.21 18:29

The American open-weight ecosystem is growing. We're thrilled to support Poolside as they push open-weight coding models forward. Poolside's flagship model family is Laguna: open-weight agentic coding models built for long-horizon tasks. Today, they're releasing Laguna S 2.1, a 118B (8B active) MoE model with up to 1M context. @Madisonkanna sat down with @poolsideai Co-CEO @eisokant to talk about the launch, and what it means for the ecosystem:

Madison Kanna@Madisonkanna

2026.07.21 18:22

Big day for American open-source AI. For the launch of Laguna S, I sat down with @eisokant to discuss its architecture, the economics of open weights, and the question of who gets to build intelligence. Timestamps: 0:00 Intro 1:50 Why Poolside started opening its models: the oligopoly on intelligence 4:28 Getting nerd-sniped by Karpathy, building LLMs before anyone cared 11:20 Laguna S: 118B parameters, 8B active, built in 8 weeks 13:05 The future of software engineering: behaviors over IQ 14:25 Sliding window attention, 1M context, the model factory 15:50 Being an American open-source lab 20:47 The economics of open weights 24:22 Who gets to build intelligence? The 12–18 month window 30:28 Erdős 397 in 30 minutes 31:48 Extracting transcripts with a debugger Congrats to the Poolside team on the launch!