gpt-oss-120b
OpenAI · Released Aug 2025
An open-weight 117-billion-parameter Mixture-of-Experts model from OpenAI with a 131k token context window.
- Strengths
- Handles long-context reasoning and document analysis across a large parameter capacity without the latency demands of real-time inference.
- Best for
- Batch processing workflows where you need substantial model capacity and extended context, such as analyzing lengthy documents or reasoning over large corpora.
- Limitations
- This model is an open-weight variant positioned for offline batch use rather than real-time applications; it is larger and slower than the newer GPT-5 family models released in the same month.
Input / 1M
$0.15
Output / 1M
$0.6
Cached input / 1M
$0.075
Context window
131K
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in decreased 0.0% out decreased 0.0%
- 90d
- in increased 305.4% out increased 252.9%
- 1y
- in increased 284.6% out increased 233.3%
- Since launch
- in increased 284.6% out increased 233.3%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 16 Oct 2026 | $0.15 | $0.6 | $0.075 | Imported from OpenRouter | openrouter.ai |
| 15 Oct 2026 | $0.15 | $0.6 | $0.075 | Imported from OpenRouter | openrouter.ai |
| 14 Oct 2026 | $0.037 | $0.17 | — | Imported from OpenRouter | openrouter.ai |
| 13 Oct 2026 | $0.15 | $0.6 | $0.075 | Imported from OpenRouter | openrouter.ai |
| 29 Sep 2026 | $0.037 | $0.17 | — | Imported from OpenRouter | openrouter.ai |
| 18 Sep 2026 | $0.15 | $0.6 | $0.075 | Imported from OpenRouter | openrouter.ai |
| 22 Aug 2026 | $0.037 | $0.17 | — | Imported from OpenRouter | openrouter.ai |
| 12 Aug 2026 | $0.03 | $0.17 | $0.03 | Imported from OpenRouter | openrouter.ai |
| 15 Jul 2026 | $0.037 | $0.17 | — | Imported from OpenRouter | openrouter.ai |
| 14 Jul 2026 | $0.03 | $0.15 | — | Imported from OpenRouter | openrouter.ai |
| 10 Jul 2026 | $0.036 | $0.18 | — | Imported from OpenRouter | openrouter.ai |
| 26 Jun 2026 | $0.03 | $0.15 | — | Imported from OpenRouter | openrouter.ai |
| 11 Jun 2026 | $0.039 | $0.18 | — | Imported from OpenRouter | openrouter.ai |