Simulating realistic Agentic workflow parameters (40,000 in / 1,500 out with 65% cache reuse). Qwen3 Coder Flash (OpenRouter) delivers a 86% cost reduction over Mistral Medium 3.5.
| Traffic Volume Tier | Mistral Medium 3.5 Monthly | Qwen3 Coder Flash (OpenRouter) Monthly | Monthly Savings by picking Qwen3 Coder Flash (OpenRouter) |
|---|---|---|---|
| 1,000 reqs/mo (Dev/Testing) | $36.15 | $5.207 | Save $30.944 / mo |
| 10,000 reqs/mo (Small App) | $361.50 | $52.065 | Save $309.435 / mo |
| 100,000 reqs/mo (Growth Production) | $3,615.00 | $520.65 | Save $3,094.35 / mo |
| 1,000,000 reqs/mo (Scale SaaS) | $36,150.00 | $5,206.50 | Save $30,943.50 / mo |
Qwen3 Coder Flash (OpenRouter) is 86% cheaper for Agentic workflow workloads. At standard Agentic workflow parameter ratios (40,000 input tokens, 1,500 output tokens, 65% cache hit), Qwen3 Coder Flash (OpenRouter) costs $0.005207 per request compared to $0.0362 on Mistral Medium 3.5.
Mistral Medium 3.5 offers a context window of 256,000 tokens (max output: 32,768), while Qwen3 Coder Flash (OpenRouter) offers 1,000,000 tokens (max output: 65,536).
At 100,000 requests per month, using Qwen3 Coder Flash (OpenRouter) saves $3,094.35 every month (or $37,132.20 annually) compared to Mistral Medium 3.5.
Prompt caching is the single biggest lever — each step re-reads prior context. Summarize or prune tool outputs before appending them to the transcript. Cap the step budget; runaway loops are the #1 surprise on agent invoices.