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SF-based Vals, which develops evaluations and benchmarks to test AI models on real-world tasks, raised a $40M Series A led by a16z at a $400M valuation (Abhinaya Prabhu/Tech Funding News)

Vals AI raised $40 million in a Series A round at a $400 million valuation. — Revenue has grown eightfold since 2025 …

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FastAPI Dependency Injection for Anthropic Claude: Isolating API Keys and Rate Limits Per Tenant

FastAPI Dependency Injection for Anthropic Claude: Isolating API Keys and Rate Limits Per Tenant When CitizenApp hit 15 tenants, I realized our single global Claude API key was a ticking time bomb.

  • CitizenApp faced challenges with a single Claude API key for 15 tenants
  • FastAPI s dependency injection isolated API keys and rate limits per tenant
  • Tenant-specific Claude clients and rate-limit buckets eliminated global variables

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