Why 'Free' LLM Token Tiers Can Cost More in Time Than Paid Plans

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Free token allowances on shared LLM endpoints come with hidden costs in the form of rate limits, retries, and slower throughput. When multiple users share the same endpoint, traffic bursts from others translate directly into higher latency for everyone. A practical way to measure this is to run a representative batch of real prompts through both the free and paid endpoints, then compare metrics like tokens per second and retry rates. A retry rate above five percent is a warning sign that the free tier is effectively queuing your workload rather than serving it. For recurring pipelines, a tenfold drop in tokens per second can outweigh any invoice savings over time.

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