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Groq gave me 900 tok/s then 429 mid refactor

Groq
Ultra-fast LLM inference on custom LPU chips

Sorry English.

I pipe llama-3.3-70b through Groq for agent loops because latency look nice on demos. Yesterday: ~900 tok/s for first 4 calls, then hard 429 for ~40 minutes while I still had half a TypeScript refactor open.

Local vLLM on a 4090 is slower but at least it does not ghost me. Anyone using Groq in real CI, or only for demos?

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  • Sam Nguyen

    yeah this is the trade. garage 4090 never 429s. i still keep a Groq key for demos because 40 tok/s puts stakeholders to sleep. for real work i stay on qwen2.5-coder:14b in ollama with num_ctx 16k locked.

  • Cole

    hit the same wall last week on a LangGraph run. first burst was magic, then every tool call sat on Retry-After. ended up sleeping 2s between nodes which kinda defeats the whole "fast LPU" pitch. demos love Groq. overnight agent jobs... not so much.

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