Today in AI — 4 April 2026

Today's AI news reads like a land grab. Every major player is simultaneously shipping agents, locking down platforms, and funding the infrastructure underneath.

Agents as the new interface

Cursor 3, Salesforce's Slack overhaul, and Sakana AI's Marlin all point the same direction: AI agents replacing application interfaces, with humans shifting from operators to orchestrators.

• Cursor 3 launches agent-first workspace that reimagines developers as orchestrators — Cursor
• Salesforce transforms Slackbot into an autonomous work agent with 30 new AI features — TechCrunch
• Sakana AI launches Marlin, an autonomous agent that compresses weeks of strategy work into hours — Sakana AI

Building in-house

Microsoft shipped three foundation models built without OpenAI. Google released Gemma 4 under Apache 2.0. Anthropic cut off third-party tools from Claude subscriptions. Partnerships are giving way to vertical integration.

• Microsoft launches three in-house foundation models in direct challenge to OpenAI and Google — TechCrunch
• Google releases Gemma 4 as its most capable open models under Apache 2.0 — Google Blog
• Anthropic cuts off OpenClaw and third-party AI agents from Claude subscriptions — VentureBeat

When AI gets too capable

Anthropic found 171 emotion-like concepts inside Claude that causally drive behaviour, Calif's MAD Bugs initiative identified over 500 high-severity zero-days, and Zhipu's GLM-5V-Turbo turns design mockups into code. These capabilities are outpacing the oversight frameworks around them.

• Anthropic discovers 171 emotion-like concepts inside Claude that causally drive behavior — Anthropic
• MAD Bugs initiative puts AI-discovered zero-day vulnerabilities at industrial scale — Calif
• Zhipu AI launches GLM-5V-Turbo, a 744B-parameter multimodal agent model that turns designs into code — The Decoder

Capital follows conviction

The money keeps scaling: $10B from Microsoft into Japan, India's largest AI round from Sarvam, and OpenAI buying a tech talk show. MLPerf v6.0 gives the industry a common yardstick for what all this capital is actually producing.

• Microsoft commits $10 billion to Japan AI infrastructure with SoftBank and Sakura Internet — CNBC
• Sarvam AI nears $300M raise at $1.5B valuation in India's largest AI funding round — NewsBytes
• OpenAI acquires tech talk show TBPN in its first media deal — TechCrunch
• MLPerf Inference v6.0 debuts five new benchmarks as 24 organizations submit results — MLCommons

If you're building on someone else's platform, pay attention to how fast the ground is shifting.

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