gpt-oss-120b
Self-hosting a frontier-ish reasoning model on a single H100 with full chain-of-thought visibility and no per-token bill.
Data checked 2026-09-06
OpenAI
ga
open weights
gpt-oss-120b
- Context window
- 131.1K tokens in
- Max output
- 131.1K tokens out
- Input
- — per 1M tokens
- Output
- — per 1M tokens
- Knowledge cutoff
- 2024-06-01
- Released
- 2025-08-05
- Parameters
- 117B total / 5.1B active MoE
- Licence
- Apache-2.0
A What it is for
OpenAI publishes no hosted price for it on the API pricing page, so cost depends on your own or a third party's infrastructure.
B Capabilities
| Input modalities | text |
|---|---|
| Output modalities | text |
C Others from OpenAI
| Model | Context | Max out | In $/M | Out $/M | Blended | Status |
|---|---|---|---|---|---|---|
GPT-6 Astra
gpt-6-astra
|
1.1M | 128K | $10.00 | $50.00 | $20.00 | ga |
GPT-5.6 Sol
gpt-5.6-sol
|
1.1M | 128K | $4.00 | $20.00 | $8.00 | ga |
GPT-5.6 Terra
gpt-5.6-terra
|
1.1M | 128K | $2.00 | $12.00 | $4.50 | ga |
GPT-5.6 Luna
gpt-5.6-luna
|
1.1M | 128K | $0.20 | $1.20 | $0.45 | ga |
GPT-5.6 Cyber
gpt-5.6-cyber
|
400K | 128K | $12.50 | $75.00 | $28.13 | ga |
Daybreak Blue (alias)
gpt-daybreak-blue-latest
|
1.1M | 128K | $4.00 | $20.00 | $8.00 | ga |
Daybreak Red (alias)
gpt-daybreak-red-latest
|
400K | 128K | $12.50 | $75.00 | $28.13 | ga |
GPT-5.5 Cyber
gpt-5.5-cyber
|
— | — | $12.50 | $75.00 | $28.13 | deprecated |
GPT-5.5
gpt-5.5
|
1.1M | 128K | $5.00 | $30.00 | $11.25 | ga |
GPT-5.5 Pro
gpt-5.5-pro
|
1.1M | 128K | $30.00 | $180.00 | $67.50 | ga |
GPT-5.4
gpt-5.4
|
1.1M | 128K | $2.50 | $15.00 | $5.63 | ga |
GPT-5.4 Mini
gpt-5.4-mini
|
400K | 128K | $0.75 | $4.50 | $1.69 | ga |
How this model is billed. Open-weight release, not an OpenAI API product. OpenAI's own API pricing page (https://developers.openai.com/api/docs/pricing) and API models list (https://developers.openai.com/api/docs/models) contain no gpt-oss entry — gpt-oss appears only as a cookbook topic. The official model card on huggingface.co/openai describes 117B total / 5.1B active parameters (MoE), Apache 2.0 license, and distributi
D Verify before you commit
Model pricing changes without notice and this page is a snapshot. Confirm against the vendor's own page before you build a budget on it.
Source: huggingface.co · checked 2026-09-06 · OpenAI pricing · API docs