openai
GPT-5
legacy · frontier · modelled cost · stale pass rate · verified 2026-08-21
List price · USD per million tokens
Input
$1.25
Output
$10
Cached input
$0.125
Context
missing
Provider pricing page · verified 2026-08-21
Cost per solved task · by task tier
light
$0.05
moderate
$0.74
heavy
$1.66
Source: Aider polyglot benchmark · verified 2026-08-21 · modelled basis: pass rate published, cost from Solvency's loop model at current prices
Retained because it is the highest-scoring model on the Aider polyglot benchmark and is still list-priced.
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 | $ / task | Basis | Run / read |
|---|---|---|---|---|---|
| Aider polyglot benchmark | gpt-5 (high) | 88.0% | not published | historical at run date | 2025-08-23 |
| Aider polyglot benchmark | gpt-5 (medium) | 86.7% | not published | historical at run date | 2025-08-25 |
stale peers
Cost per solved task against its peers
Stale rows only, heavy tier, 200 tasks a month. Lower is better. These are Solvency estimates, not observed costs.
stale · pass rate published; cost is Solvency's loop model at verified prices
Source: Aider polyglot benchmark · verified 2026-08-21
Compare
Head to head
Side-by-side pricing and cost per solved task with another current model.