AI infrastructure startups Fireworks and Baseten have reportedly reached massive valuations, reflecting intense investor interest in developer-focused inference and deployment platforms. OpenRouter, the popular LLM API aggregator, is also on a rapid growth trajectory. This funding wave highlights a major capital shift toward cost-effective, developer-friendly API and hosting solutions.
OpenRouter, an AI gateway startup founded in 2023, raised a $113 million Series B led by CapitalG. The round reportedly values the company at about $1.3 billion post-money, more than doubling from its estimated $547 million valuation after its June 2025 Series A. The company says it now offers access to over 400 models, has 8 million global users, and processes 100 trillion tokens per month.
Nathan Lambert argues that 2026 AI progress is becoming higher-stakes, with model capabilities, work patterns, economics, and real-world risks all escalating. He says open models still lack a true Claude Code and Opus 4.5-style agent moment, and Gemini has no clear competitor to Claude Code or Codex yet. The essay also tracks Mythos, American open-model momentum, frontier-lab competition, and mounting intervention from governments and other power structures.