Cash App

Headlines · 4

1. Oct 23
   Block Unveils Dessa Speech-to-Speech AI Model

   Block introduced Dessa, an experimental full-duplex speech-to-speech AI model trained from scratch on human speech without text data. Block says the model can listen and speak simultaneously, recognize details such as laughter, pauses and sarcasm, run locally on a MacBook Pro M4 Max or better, and was trained on one NVIDIA GB200 NVL72. The model is not publicly available; Block is offering early access to a small group of AI safety researchers.

   The Decoder · 🔥 3
2. Oct 14
   OpenAI Daybreak case studies: Block and SentinelOne report faster security work

   OpenAI published two customer case studies on how Block and SentinelOne use Daybreak, its cybersecurity offering within the OpenAI Defense Factory. Block CISO James Nettesheim said the team now does vulnerability discovery, detection and response in hours rather than weeks: detection tuning can replay a proposed change against seven months of production telemetry in under an hour, triage throughput is up 50%, the system performs roughly 1,100 analyst-hours of investigation per quarter, and in a recent red team exercise it chained a full attack path in about two hours. SentinelOne Chief AI Officer Gregor Stewart said Daybreak can now produce human-level reverse-engineering output in roughly eight hours, versus four to six weeks for a top researcher, letting his team compare more malware samples. Both executives stressed that humans still review and remain accountable, and all figures are company claims published in vendor case studies without independent verification.

   OpenAI · 🔥 0
3. Oct 13
   Block, Cloudflare and Klaviyo on rebuilding companies for the agentic era

   In a panel hosted by The Information co-executive editor Amir Efrati, executives from Block, Cloudflare and Klaviyo discussed how companies should be organized when AI agents can understand context, coordinate work and act across systems. Cloudflare chief strategy officer Stephanie Cohen said the company had to redesign the work itself, including eliminating whole functions, while Block's Owen Jennings said Block rebuilt its functional model so engineering, product, design and sales work across Square, Cash App and Afterpay on shared capabilities, and open-sourced Buzz, a workspace giving each agent its own identity, permissions and context. Jennings said Block shipped about three times as many Square features in the first half of 2026 as a year earlier — a company-reported figure — and Klaviyo CTO Surabhi Gupta said Klaviyo tracks development velocity, cost and hours saved; no panelist would predict headcount.

   The Information · 🔥 0
4. Oct 8
   Block uses Claude Fable 5 to orchestrate migrations across thousands of PRs

   Anthropic published an interview with Bradley Axen, Block's head of AI capabilities, describing how Block uses Claude Fable 5 to run company-wide code migrations — work that can span hundreds or thousands of pull requests across multiple repositories and millions of lines of code. A human engineer steers while Fable handles higher-level design such as data models, API specs and algorithms, then directs up to dozens of smaller, more cost-effective models like Opus and Sonnet to make edits and run tests. Axen said early results show the orchestrator spends frontier tokens on complex upfront planning while a higher percentage of tokens goes to smaller worker models; the interview also covers Block's open-source Buzz workspace for human-agent teams, an internal auto-selector for choosing models, and the role of built-in safeguards and Anthropic's safety classifiers.

   Claude Blog · 🔥 0

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