GPT OSS 1 120B
GPT OSS 1 120B is OpenAI's language model with a 128K context window, starting at $0.18 / 1M input and $0.72 / 1M output. An open-weight large language model from OpenAI's GPT OSS series, sized at 120B parameters for broad general-purpose reasoning and generation.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities3/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Output $ / 1M | |
| $0.18 | $0.72 | |
Cost Calculator
US Dollar ($)
Preset:
Cheapest Instances to Run It
Cloud GPU instances that can host GPT OSS 1 120B, ranked by cheapest on-demand price. The model needs about 288 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.
All clouds
FP16 (full precision)
US Dollar ($)
Instance | Cloud | GPU | VRAM | Price | Cheapest region | |
|---|---|---|---|---|---|---|
| a3-megagpu-8g |  GCP | 8× nvidia-h100-mega-80gb | 640 GB | $10.42/hr | ||
| a3-ultragpu-8g | GCP | 8× nvidia-h200-141gb | 1128 GB | $13.82/hr | ||
| Standard_NC96ads_A100_v4 |  Azure | 4× NVIDIA A100 | 320 GB | $14.69/hr | ||
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| GPT-6 Astra | 1.1M | $10.00 | $50.00 | Available | |
| GPT-5.6 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-5.6 Terra | 1.1M | $2.00 | $12.00 | Available | |
| GPT-5.6 Luna | 1.1M | $0.200 | $1.20 | Available | |
| GPT-5.5 | 1.1M | $5.00 | $30.00 | Available | |
| GPT-5.4 Mini | 400K | $0.750 | $4.50 | Available | |
| GPT-5.4 Nano | 400K | $0.200 | $1.25 | Available | |
| GPT-5.4 | 1.1M | $2.50 | $15.00 | Available | |
| GPT-5.3 Codex | 400K | $1.75 | $14.00 | Available | |
| GPT-5.2 Codex | 400K | $1.75 | $14.00 | Deprecated | |
| GPT OSS 1 120B | — | 128K | $0.180 | $0.720 | Current |