Calculate the cost of using gpt-oss-120b-maas from Vertex AI for your AI applications
Pricing data last updated:
Mode: Chat
Max: 131,072 tokens
Max: 32,768 tokens
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gpt-oss-120b-maas is a chat model from Vertex AI, one of 104 chat models they offer. It is priced at $0.09 per 1M input tokens and $0.36 per 1M output tokens, ranking 221 out of 2292 chat models by cost and cheaper than 90% of models in this category. gpt-oss-120b-maas supports reasoning. It accepts up to 131K input tokens.
Note: Use the interactive calculator above to estimate costs for your specific usage patterns.
Use the maximum token limits shown above to understand the model's capacity. This model can handle up to 131,072 input tokens. The maximum output length is 32,768 tokens.
At $0.09 per 1M input tokens and $0.36 per 1M output tokens, gpt-oss-120b-maas ranks 221 out of 2292 chat models by input cost. It is more affordable compared to the median of $0.55 for chat models, and is cheaper than 90% of models in this category.
gpt-oss-120b-maas is one of 104 Vertex AI chat models, with support for reasoning.
| Model | Provider | Input / 1M tokens | Output / 1M tokens | vs gpt-oss-120b-maas |
|---|---|---|---|---|
| gemini-2.5-flash-lite | Google Gemini | $0.10 | $0.40 | +11% |
| gemini-2.5-flash-lite-preview-09-2025 | Google Gemini | $0.10 | $0.40 | +11% |
| gemini-flash-lite-latest | Google Gemini | $0.10 | $0.40 | +11% |
Similar chat models from other providers
Yes. gpt-oss-120b-maas costs $0.09 per 1M input tokens compared to gemini-2.5-flash-lite's $0.10 per 1M input tokens, making it 11% more affordable. Both are chat models and share support for vision, function calling, reasoning, web search, prompt caching, structured output.
gpt-oss-120b-maas input pricing is $0.09 per 1M tokens, which is 84% below the median of $0.55 for chat models. It ranks 221 out of 2292 chat models by input cost, making it cheaper than 90% of models in this category. For output, it costs $0.36 per 1M tokens compared to the median of $1.50.
Among Vertex AI's 104 chat models, gpt-oss-120b-maas ranks 7 by input cost.
The most comparable chat models to gpt-oss-120b-maas are: gemini-2.5-flash-lite from Google Gemini ($0.10/1M input tokens); gemini-2.5-flash-lite-preview-09-2025 from Google Gemini ($0.10/1M input tokens); gemini-flash-lite-latest from Google Gemini ($0.10/1M input tokens); gemini-2.5-flash-lite-preview-06-17 from Google Gemini ($0.10/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library.
gpt-oss-120b-maas is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $0.09 and generating 1M output tokens costs $0.36.
