At 2 requests per user per minute, DeepSeek can only handle 30 concurrent users. That's fine for internal tools and small chatbots, but not for production apps with real traffic. Google Flash Lite handles 100x more users at 1/10th the cost.
The Bottom Line
For most developers, rate limits are not the bottleneck — cost is. But if you're building a high-traffic chatbot or real-time API, rate limits become critical. Google Gemini Flash Lite offers the best combination of high RPM (6,000), high TPM (8M), and low cost ($0.075/$0.30). OpenAI scales well with spend. DeepSeek and Mistral are limited to 60 RPM — fine for low-traffic apps, but you'll hit the ceiling fast.
Strategy: Start with the cheapest model that meets your quality needs. If you hit rate limits, add request queuing and exponential backoff before switching providers. If you still need more throughput, use multi-key rotation or upgrade to a provider with higher limits. Use the APIpulse calculator to model costs at your target throughput.
Check if your provider can handle your traffic? Enter your expected RPM and tokens per request to see which models work — and what it costs.
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