Head to head
GPT-5.6 TerravsPhi 4
For tasks, about a month.
Verdict · measured basis
Phi 4 costs $0.0000 per solved task against
GPT-5.6 Terra at $4.50 — ▼ 115385x cheaper.
Over 200 tasks that is $900 a month.
On output token price alone Phi 4 looks 86x cheaper. The ranking holds, but the margin changes.
Verified pricing, pass rate and cost per solved task for GPT-5.6 Terra and Phi 4| Figure | GPT-5.6 Terra | Phi 4 |
|---|
| Input $/Mtok | $2 | $0.07 |
|---|
| Output $/Mtok | $12 | $0.14 |
|---|
| Cached input $/Mtok | $0.2 | $0.07 |
|---|
| Pass rate | 60% | 67% |
|---|
| Cost per solved task | $4.50measured | $0.0000measured |
|---|
| Cost per month | $900 | $0.01 |
|---|
Cost per month against tasks per month · drag the marker
Solid measured · dashed modeled · dotted stale. The gap is the verdict.
Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings