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AI Summary
- Open models exploded in 2024 with shift from five dominant players (2023) to diverse ecosystem of Mistral, Mosaic, and others competing in top LLM ranks
- Open-source model proliferation created competitive pressure on closed API providers, accelerating commoditization and enabling local deployment
- Nathan Lambert's RLHF 201 baseline in early 2024 tracking dramatic expansion of viable open-source alternatives to proprietary models