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- đź“Š Market Pulse: End of Month Funding Roundup
đź“Š Market Pulse: End of Month Funding Roundup
Top AI startup fundings from last month, led by Anthropic’s $3.5B Series E, with major moves across infrastructure, agents, and vertical AI platforms.
Nick Wentz
March 31, 2025
Anthropic’s $3.5B round reflects continued belief in frontier models, especially as Claude v3 nears launch and major partners like Amazon and Google double down on ecosystem bets. But the real story may be the rising tide of agentic AI infrastructure—tools and platforms enabling autonomous software workflows, AI-native developer tools, and secure AI-agent deployment.
Alphabet’s Isomorphic Labs entering the venture market with $600M is a strategic move to accelerate AI’s commercial leap into biotech, a sector that’s been slow to integrate generative AI beyond hype. Similarly, Temporal’s pivot toward agentic workflows, Reflection AI’s mission to automate software engineering, and Arcade’s reliability-focused agent platform suggest a coming flood of tools built for AI to do more work, autonomously.
The convergence of capital into AI-native microservices, chips, agent safety, and verticalized use cases marks a broader maturation of the AI economy—from foundational models to applied systems.
đź“Ś Top Takeaways
Anthropic raised $3.5B in Series E, reinforcing its position as a top OpenAI rival and likely pushing its valuation past $15B–$18B.
Isomorphic Labs’ $600M round signals Alphabet’s readiness to spin out AI-led pharma at scale, with DeepMind co-founder Demis Hassabis at the helm.
Infrastructure was hot: Temporal ($146M), Nexthop ($110M), Retym ($75M) all address core bottlenecks in compute, networking, and orchestration for agentic AI.
Early-stage “agent startups” like Reflection AI, Agentic Marketing, Halliday raised capital to automate software engineering, influencer campaigns, and even blockchain execution.
Agent-focused edtech (Brisk), marketing (Auxia), and automation (n8n) show how AI agents are moving from concept to product in vertical SaaS.
🤑 Full Funding Breakdown
Company | Funding | Series | Company Focus / Product |
|---|---|---|---|
Anthropic | $3.5 B | Series E | Developer of the Claude AI assistant (founded by ex-OpenAI team) raising capital to build next-gen AI systems and expand compute/research. |
Isomorphic Labs | $600 M | Series A (first external) | Alphabet’s AI-driven drug discovery spinout (founded by DeepMind’s Demis Hassabis) seeking to accelerate its AI drug-design engine toward clinical trials. |
Temporal | $146 M | Series C | Seattle-based cloud microservices orchestration platform pivoting to support “agentic” AI workflows. |
Retym | $75 M | Series D | U.S./Israel chipmaker building data-center DSP chips to boost internal/external communication speeds (riding the AI infrastructure boom). |
Reflection AI | $130 M | Series A (early-stage) | New York-based startup (founded by ex-DeepMind/OpenAI researchers) aiming to develop “superintelligent” autonomous coding agents to automate software development. |
n8n | $60 M | Series B | Berlin-based “fair-code” workflow automation platform that expanded into AI-driven integrations after 5× revenue growth; now scaling to the U.S. and new markets. |
Brisk | $15 M | Series A | San Francisco AI edtech platform offering AI-assisted tools for teachers (e.g. an AI writing inspector, lesson plan generator) to build an “AI-native” education stack. |
Hakimo | $10.5 M | Series A | Menlo Park startup providing an AI “virtual security guard” – an autonomous monitoring system for physical security cameras and sensors to detect intrusions and threats. |
Halliday | $20 M | Series A | Platform for deploying AI agents on blockchain with safety “guardrails” (ensuring autonomous on-chain actions are secure and compliant). |
Auxia | $23.5 M | Series A | Enterprise marketing AI startup (founded by ex-Google/Meta execs) using “agentic AI” to help large firms leverage first-party customer data and boost loyalty. |
Arcade | $12 M | Seed/Early | AI agent infrastructure startup (founded by former Okta and Redis engineers) building a platform to make AI agents more reliable and useful. |
Agentic Marketing (AMT) | $3.5 M | Seed | London-based startup whose AI agent “Lyra” automates influencer marketing campaigns – handling influencer outreach, bookings, payments, and analytics autonomously. |
Prezent | $20 M | Series A (extension) | Los Altos-based platform using generative AI to create business slide decks and presentations, with an AI assistant (“Astrid”) tailored to company-specific jargon. |
Nexthop AI | $110 M | Series A (launch) | Santa Clara-based AI infrastructure startup emerging from stealth to build custom networking hardware + AI-driven network OS for hyperscale cloud data centers. |
SplxAI | $7 M | Seed | Croatia-founded cybersecurity startup protecting AI chatbots and internal AI agents via automated testing and threat monitoring. |
đź” Conclusion
The current funding wave shows investors are no longer betting only on foundational models—but on the platforms and agents that can turn those models into scalable, autonomous systems. As capital shifts into agentic infrastructure, vertical AI apps, and secure deployment stacks, we’re witnessing the next phase of AI commercialization: building AI systems that do, not just say. Expect more “agent stack” infrastructure plays and vertical AI SaaS to land large checks in Q2.
 | Nick WentzI've spent the last decade+ building and scaling technology companies—sometimes as a founder, other times leading marketing. These days, I advise early-stage startups and mentor aspiring founders. But my main focus is Forward Future, where we’re on a mission to make AI work for every human. |
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