GPT OSS Ultra 120B
GPT OSS Ultra 120B is OpenAI's language model with a 131K context window, starting at $0.2 / 1M input and $0.95 / 1M output. An ultra-fast open-weight 120B LLM variant in the GPT OSS series, optimized for high-speed inference at large scale.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities3/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Output $ / 1M | |
| $0.2 | $0.95 | |
Cost Calculator
US Dollar ($)
Preset:
Cheapest Instances to Run It
Cloud GPU instances that can host GPT OSS Ultra 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 | ||
Other Models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| GPT-6 Luna | Luna | 1.1M | $0.100 | $0.500 | |
| GPT-6 Sol | Sol | 1.1M | $2.00 | $10.00 | |
| GPT-6 Astra | — | 1.1M | $10.00 | $50.00 | |
| GPT-5.6 Sol | — | 1.1M | $2.00 | $10.00 | |
| GPT-5.6 Terra | — | 1.1M | $2.00 | $12.00 | |
| GPT-5.6 Luna | — | 1.1M | $0.200 | $1.20 | |
| GPT-5.5 | — | 1.1M | $5.00 | $30.00 | |
| GPT-5.4 Mini | Mini | 400K | $0.750 | $4.50 | |
| GPT-5.4 Nano | Nano | 400K | $0.200 | $1.25 | |
| GPT-5.4 | — | 1.1M | $2.50 | $15.00 |