openai
GPT-5.6 Terra
current · frontier · measured cost · verified 2026-08-21
List price · USD per million tokens
Input
$2
Output
$12
Cached input
$0.2
Context
1.1M
Provider pricing page · verified 2026-08-21
Cost per solved task · by task tier
light
$4.50
moderate
$4.50
heavy
$4.50
Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · measured basis: the benchmark observed this cost, so no tier assumption touches it and the three tiers are identical
Benchmark rows
Where the pass rate comes from
Every row that names this model, with its harness and cost basis. Rows are harness + model combinations, not properties of the bare model.
| Benchmark | Entry | Pass | $ / attempt | Basis | Run / read |
|---|---|---|---|---|---|
| Artificial Analysis Coding Agent Index v1.4 | Codex - GPT-5.6 Terra (max) | 60.0% | $2.70 | measured by source | 2026-08-26 |
measured peers
Cost per solved task against its peers
Measured rows only, ranked as on the calculator. Monthly figures at 200 tasks. Lower is better.
measured · the benchmark ran the model and observed this cost
Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21
Compare
Head to head
Side-by-side pricing and cost per solved task with another current model.