gpt-oss-120b
OpenAI · Mid
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...
Input / 1M
$0.039
Output / 1M
$0.18
Cached input / 1M
—
Context window
131K
Where it sits
17th-cheapest mid model
by blended $/Mtok among 262 listed mid models
87% below the mid median
blended $/Mtok across 262 mid models
Output costs 4.6× input
$0.039 in / $0.18 out per 1M
Held flat since launch (Jun 2026)
no blended price change recorded
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Only one price on record so far — the history chart appears once a price changes.
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 11 Jun 2026 | $0.039 | $0.18 | — | Imported from OpenRouter | openrouter.ai |