Cognition shipped Devin 2.0, an agent-native IDE with interactive planning, answers about a codebase that cite files, and generated code wikis — and dropped the entry price from the $500-per-month team plan Devin launched on to $20, then pay-as-you-go. The $20 buys 9 ACUs (Agent Compute Units) at $2.25 each, and Cognition prices roughly 15 minutes of active Devin work at 1 ACU, so the entry tier is about 2.25 hours of agent work before metering; ACUs are more expensive per unit on the cheap plan than they were on the $500 subscription, where they cost $2.

The price cut came weeks after Cognition reportedly raised hundreds of millions, and into a field where GitHub Copilot agent mode, AWS Kiro and Q Developer, Windsurf and Magic's models all compete on the same autonomous-coding pitch. The bet is that a low floor converts trials, with the real margin sitting in compute credits rather than seat fees.

Sam Altman said on X on March 31 that OpenAI is excited to release a powerful new open-weight language model with reasoning in the coming months — a reversal of the closed-by-default posture, reported by WIRED as a response to DeepSeek's R1 and the reach of Meta's Llama weights, and following Altman's own earlier admission that OpenAI sat on the wrong side of history over open models. OpenAI technical staff publicly added that the model must run on your own hardware, and a safety researcher said the company would test it against its Preparedness Framework and not release anything judged catastrophically risky. No parameter count, license or context window was disclosed; this is a commitment, not a release.

That same day, Anthropic published version 2.1 of its Responsible Scaling Policy, effective March 31. The revision added a new capability threshold for CBRN development — the point at which a model could substantially uplift a moderately resourced state program — split its AI R&D thresholds into two levels (fully automating entry-level AI research work, versus dramatically accelerating the rate of effective scaling), and committed to re-evaluating thresholds whenever it upgrades safeguards. It did not raise or lower Anthropic's existing ASL-3 protections.

Amazon's AGI Lab in San Francisco released a research preview of the Amazon Nova Act SDK, a model trained to act inside a web browser. Rather than one long autonomous rollout, the SDK decomposes workflows into atomic commands — search, checkout, answer a question about what is on screen — that developers can annotate with constraints, interleave with Python for asserts, breakpoints and parallel thread pools, and mix with direct Playwright manipulation for steps like password entry. Amazon claims 0.939 on ScreenSpot Web Text against 0.900 for Claude 3.7 Sonnet and 0.883 for OpenAI's computer-use agent.

It ships as pip install nova-act with API keys from nova.amazon.com, alongside a new portal for the whole Nova family (text, Canvas images, Reel video), and The Verge notes the Nova lineup is positioned on price — Amazon claims at least 75 percent cheaper than comparable rivals. Nova Act already powers parts of the delayed Alexa+ upgrade, and Amazon's framing is deliberately narrow: short, reliable tasks with explicit human-in-the-loop handoffs rather than full autonomy.

OpenAI announced the largest private fundraising on record: $40 billion at a $300 billion post-money valuation, led by SoftBank, which committed $10 billion in mid-April and $30 billion in December, the second tranche contingent on OpenAI completing its conversion to a for-profit entity by the end of the year. SoftBank disclosed that its total investment could fall to as little as $20 billion if that restructuring does not happen; the remaining $10 billion comes from a syndicate including Microsoft, Coatue, Altimeter and Thrive. Roughly $18 billion is expected to fund OpenAI's commitment to Stargate, the SoftBank–OpenAI–Oracle data-center joint venture.

OpenAI also said ChatGPT now has 500 million weekly users, up from 400 million a month earlier, and reports expectations of tripling revenue to $12.7 billion by year-end. SoftBank is financing the first tranche with borrowings from Mizuho and other lenders rather than cash.