Head to head
Solar Pro 4vsDeepSeek V4 Flash 0731
For tasks, about a month.
Verdict · measured basis
DeepSeek V4 Flash 0731 costs $0.0002 per solved task against
Solar Pro 4 at $0.0003 — ▼ 1.6x cheaper.
Over 200 tasks that is $0.02 a month.
On output token price alone DeepSeek V4 Flash 0731 looks 10x cheaper. The ranking holds, but the margin changes.
Verified pricing, pass rate and cost per solved task for Solar Pro 4 and DeepSeek V4 Flash 0731| Figure | Solar Pro 4 | DeepSeek V4 Flash 0731 |
|---|
| Input $/Mtok | $0.3 | $0.06 |
|---|
| Output $/Mtok | $1.2 | $0.12 |
|---|
| Cached input $/Mtok | $0.06 | $0.012 |
|---|
| Pass rate | 75% | 89% |
|---|
| Cost per solved task | $0.0003measured | $0.0002measured |
|---|
| Cost per month | $0.06 | $0.04 |
|---|
Cost per month against tasks per month · drag the marker
Solid measured · dashed modeled · dotted stale. The gap is the verdict.
Solvency Bench (solvency.dev) — first-party measurement · verified 2026-08-26 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings