DeepSeek-V4 Flash 0731 vs GPT-5.6 Luna on DeepSWE: Cost and Coding
DeepSeek-V4 Flash 0731, at $0.10 per rollout, is the cheapest model on the DeepSWE board and, when used first with escalation to GPT-5.6 Luna on failure, solves 78.9% of tasks at $0.385 each—more accu…