--- title: General Catalyst leads $1.1B round into 2-month-old River AI description: River AI, a two-month-old startup founded by xAI co-founder Igor Babuschkin (previously at DeepMind and OpenAI), has raised $1.1 billion in a seed/Series A... canonical: https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: General Catalyst leads $1.1B round into 2-month-old River AI | daily.dev og:description: River AI, a two-month-old startup founded by xAI co-founder Igor Babuschkin (previously at DeepMind and OpenAI), has raised $1.1 billion in a seed/Series A... og:url: https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl og:image: https://api.daily.dev/og/posts/Pd0mbgGzL.png og:image:alt: General Catalyst leads $1.1B round into 2-month-old River AI og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # General Catalyst leads $1.1B round into 2-month-old River AI **[TechCrunch](https://daily.dev/sources/tc)** · 3 min read · 0 upvotes · 0 comments ## Summary River AI, a two-month-old startup founded by xAI co-founder Igor Babuschkin (previously at DeepMind and OpenAI), has raised $1.1 billion in a seed/Series A round led by General Catalyst and AMP PBC, with Nvidia, AMD Ventures, Y Combinator, and Temasek also participating. The company's vision is to rebuild the AI stack end-to-end — training, models, product layer, and hardware — to create personally trainable AI agents that work for individuals rather than replacing human workers. River already offers an API supporting reinforcement learning and LoRA fine-tuning on open models, promising enterprises the ability to complete complex RL runs in 15–20 minutes without an infrastructure team, at 2–4x cost savings over closed-source alternatives. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is River AI and what does its API offer developers? River AI is a startup rebuilding the AI stack end-to-end to enable personally trainable AI agents. Its API, billed per 1 million tokens at rates dependent on the open model used, lets developers apply both reinforcement learning and LoRA fine-tuning to open models. The goal is to replace prompt engineering with model ownership — training open models into ones that behave as custom endpoints. _Developers evaluating fine-tuning platforms and neocloud AI infrastructure track options like River AI on daily.dev._ ### How fast can River AI complete a reinforcement learning run for enterprises? River AI claims any enterprise can complete a complex reinforcement learning run in 15 to 20 minutes with no infrastructure team required, at two to four times the cost savings relative to closed-source alternatives. This positions it as a managed post-training solution for enterprises wanting to control their own model destiny using open-weight models. _Teams weighing build-vs-buy for RL fine-tuning infrastructure find relevant comparisons on daily.dev._ ## Similar posts on daily.dev - [Prime Intellect raises $130M Series A to help enterprises build their own AI agents](https://daily.dev/posts/prime-intellect-raises-130m-series-a-to-help-enterprises-build-their-own-ai-agents-obnk2m77j) · TechCrunch · 0 upvotes · 0 comments - [AI chip startups soak up $1.1B in VC funding this week](https://daily.dev/posts/ai-chip-startups-soak-up-1-1b-in-vc-funding-this-week-sbcfggett) · The Register · 0 upvotes · 0 comments - [OpenAI raises $122 billion to accelerate the next phase of AI](https://daily.dev/posts/openai-raises-122-billion-to-accelerate-the-next-phase-of-ai-ydbcabpia) · Tech Lead Digest · 0 upvotes · 0 comments - [China’s Qingxing Raises Nearly 100 Million Yuan to Develop Quantum-Inspired AI](https://daily.dev/posts/china-s-qingxing-raises-nearly-100-million-yuan-to-develop-quantum-inspired-ai-ykgpik23f) · The Quantum Insider · 0 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#ai-agents](https://daily.dev/tags/ai-agents), [#deep-learning](https://daily.dev/tags/deep-learning), [#reinforcement-learning](https://daily.dev/tags/reinforcement-learning) [View this post on daily.dev](https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"General Catalyst leads $1.1B round into 2-month-old River AI","url":"https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl"},"datePublished":"2026-08-11T17:43:11.230Z","dateModified":"2026-08-11T17:44:23.765Z","description":"River AI, a two-month-old startup founded by xAI co-founder Igor Babuschkin (previously at DeepMind and OpenAI), has raised $1.1 billion in a seed/Series A...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/3e0f47bd9b5eae4d8d474d4ee2ea5294?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/3e0f47bd9b5eae4d8d474d4ee2ea5294?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"TechCrunch","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"TechCrunch","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tc","url":"https://daily.dev/sources/tc"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai,ai-agents,deep-learning,reinforcement-learning","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"TechCrunch","item":"https://daily.dev/sources/tc"},{"@type":"ListItem","position":3,"name":"General Catalyst leads $1.1B round into 2-month-old River AI"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai-pd0mbggzl#faq","mainEntity":[{"@type":"Question","name":"What is River AI and what does its API offer developers?","acceptedAnswer":{"@type":"Answer","text":"River AI is a startup rebuilding the AI stack end-to-end to enable personally trainable AI agents. 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