3signals244 Signals being tracked, here are the top 3:
Site: 3signals - X: @3signalsai
May 28, 2026
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241 lower-ranked signals are on the wiki today. Open the full signal list
3 new signals we're tracking
1. SpaceX is finalizing an AI training stack in C, designed to maximize performance on 220k GB300s. (title shortened)
inference-infrastructure, ai-products - production, business - May 28, 2026
What changed? SpaceX nears completion of AI training stack in C for optimized hardware performance. Evidence: SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is.
Article: SpaceX nears completion of AI training stack in C for optimized hardware performance
From: elon-musk - source
Source context: SpaceX nears completion of AI training stack in C for optimized hardware performance. Evidence: SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is
Excerpt: SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is
Why is this signal important? This development could significantly enhance SpaceX's AI capabilities, potentially influencing industry standards for hardware optimization.
2. Cognition's $1B Series D funding elevates its valuation to $26B. (title shortened)
agent-workflows - business, production, open-source - May 28, 2026
What changed? Cognition raises $1B in Series D, reaching a $26B valuation as the largest independent agent lab in AI. Evidence: [AINews] Cognition raises $1B in $26B Series D We last wrote about Cognition in September’s $10B Series C when Smol.ai also joined Cognition and AINews was eventually moved here to Latent Space . 8 months later, it is worth 2.5x more , and officially the largest remaining independent agent lab in AI, a thesis we mapped out last year . The signal is supported by 2 sources, including alessio-fanelli, shawn-wang.
From: alessio-fanelli - source
Source context: Cognition raises $1B in Series D, reaching a $26B valuation as the largest independent agent lab in AI. Evidence: [AINews] Cognition raises $1B in $26B Series D We last wrote about Cognition in September’s $10B Series C when Smol.ai also joined Cognition and AINews was eventually moved here to Latent Space . 8 months later, it is worth 2.5x more , and officially the largest remaining independent agent lab in AI, a thesis we mapped out last year .
Excerpt: [AINews] Cognition raises $1B in $26B Series D We last wrote about Cognition in September’s $10B Series C when Smol.ai also joined Cognition and AINews was eventually moved here to Latent Space . 8 months later, it is worth 2. [excerpt shortened]
Article: Cognition emerges as the largest independent agent lab globally, driving significant sales growth
From: shawn-wang - source
Source context: Cognition emerges as the largest independent agent lab globally, driving significant sales growth. Evidence: cognition is now the largest independent agent lab in the world. take the 200% utilization that everyone is hitting from this chart and run out the sales growth from this, i encourage you to go thru the exercise if you are new to investing a lot of you have read my cog https://t.co/EHeu7ImUZm https://t.co/11K3COdLNA
Excerpt: cognition is now the largest independent agent lab in the world. take the 200% utilization that everyone is hitting from this chart and run out the sales growth from this, i encourage you to go thru the exercise if you are new to investing a lot of you have read. [excerpt shortened]
Why is this signal important? Cognition's expansion underscores the escalating investment in AI, reflecting heightened demand for sophisticated agent technologies.
3. Google I/O 2026 introduces Gemini 3.5 Flash, Omni for video, and Antigravity 2.
model-releases, ai-products, agent-workflows - release, business, production, open-source - May 28, 2026
What changed? Google I/O 2026 unveils new AI tools, hardware, and software updates. Evidence: Catch up on 12 major I/O 2026 moments The colorful I/O logo against a black background, surrounded by stills from the I/O keynote The signal is supported by 3 sources, including google-ai, alessio-fanelli, lenny-rachitsky.
Article: Google I/O 2026 unveils new AI tools, hardware, and software updates
From: google-ai - source
Source context: Google I/O 2026 unveils new AI tools, hardware, and software updates. Evidence: Catch up on 12 major I/O 2026 moments The colorful I/O logo against a black background, surrounded by stills from the I/O keynote
Excerpt: Catch up on 12 major I/O 2026 moments The colorful I/O logo against a black background, surrounded by stills from the I/O keynote
Article: Google I/O 2026 unveils Gemini 3.5 Flash, Omni for video, and Antigravity 2.
From: alessio-fanelli - source
Source context: Google I/O 2026 unveils Gemini 3.5 Flash, Omni for video, and Antigravity 2.0, marking a strategic shift towards agentic and multimodal AI. Evidence: [AINews] Google I/O 2026: Gemini 3.5 Flash, Omni (NanoBanana for Video), Spark (background agents), and Antigravity 2.0 The full keynote livestream was 2 hours, but as usual, The Verge has the best supercut down to 30 mins, which is very worthwhile to get a narrative sense: The mainline Gemini 3.5 Flash is GA today (very nice compared to some staged rollouts) and is sold as a decent step up even compared to 3.1 Pro, with 3. [excerpt shortened]
Excerpt: [AINews] Google I/O 2026: Gemini 3.5 Flash, Omni (NanoBanana for Video), Spark (background agents), and Antigravity 2.0 The full keynote livestream was 2 hours, but as usual, The Verge has the best supercut down to 30 mins, which is very worthwhile to get a narrative sense: The mainline Gemini 3. [excerpt shortened]
Article: Google I/O 2026 unveils Gemini 3.5, Anti-Gravity 2.0, and new AI creative tools
From: lenny-rachitsky - source
Source context: Google I/O 2026 unveils Gemini 3.5, Anti-Gravity 2.0, and new AI creative tools. Evidence: Listen or watch on YouTube , Spotify , or Apple Podcasts What you’ll learn: How Gemini 3.5 Flash benchmarks against Claude and GPT models on speed and agentic coding tasks How Anti-Gravity 2.0’s new features (projects, scheduled tasks, subagents, slash commands) compare to Codex and Claude Code Why the /grill-me slash command could be a more aggressive alternative to Claude Code’s clarification flow—and how to use it How Google AI Studio’s new Workspace integration is designed. [excerpt shortened]
Excerpt: What launched at Google I/O 2026 (30-minute day 1 recap) Today is day one of Google I/O 2026, and I walk through every major announcement live—from the new Gemini 3.5 model family to Anti-Gravity 2.0, Google AI Studio, Gemini’s consumer redesign, the Omni video model, Flow, Stitch, and Pomelli. [excerpt shortened]
Why is this signal important? These updates redefine expectations for AI tools, offering enhanced capabilities that could transform development processes.
What's new with 3signals
Recent product improvements:
- Interactive wiki graph view (2026-05-18): The 3signals wiki now includes an Obsidian-style graph for exploring how signals connect to topics, concepts, authors, and source evidence. Details
- Front-end and back-end split for faster site delivery (2026-05-17): 3signals now serves the public website from Vercel while Railway keeps running the API, cron jobs, and content generation pipeline. Details
- Daily and weekly subscription controls (2026-05-09): 3signals now lets readers choose daily signals, the weekly digest, both, or wiki-only access without losing premium wiki login. Details
Staged future improvements:
- Fold reader feedback into presentation scoring so useful signals can be resurfaced with better timing.
- Expand archive analytics so opens, votes, site access, and X posts can be compared by issue.
- Continue tightening source QA for headline strength, evidence fit, and source freshness.