Text models
DeepSeek V4 Pro vs. V4.1 Flash
Choose a model using workflow reliability and workload cost.
Check workflow stability
Use identical prompts, context, tool schemas, and output validation. Record schema errors, missed tool calls, retries, and review time.
Budget by workload mix
Measure token usage and pass rates per task class. Use the model that meets your quality target at the lower total cost for that class.