DeepSeek V4.1 Flash launchers
Model key: deepseek_v4_1_flash. Reasoning is disabled, OpenRouter routing is
latency-sorted, concurrency is 1, and results are resumable.
Use the same action order documented in scripts/gpt_5_6_sol/README.md,
replacing gpt_5_6_sol in the script path with deepseek_v4_1_flash.
Tests 2 and 4 use four non-overlapping batches. Test 3 requires completed
Test 1, and Test 4 Phase 2 requires merged Phase 1 results.
Default safety ceilings are: Test 1 $3; Test 2 $1.50 per batch; Test 3
$2; Test 4 Phase 1 $0.75 per batch; Test 4 Phase 2 $2 per batch.