GPT Mini (120b)
AffordableOpenAI's budget-friendly reasoning model — fast and surprisingly capable.
Sparse Mixture-of-Experts design (120B total, only 5B active per request) keeps costs low while delivering strong reasoning. Adjustable thinking depth and tool use support.
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GPT Mini (120b) by OpenAI has a Capability Index of 73.2, making it comparable to the field average. It ranks #49 out of 92 models on the idapt capability leaderboard. GPT Mini (120b) is somewhat expensive at $0.04/M tokens input and $0.17/M tokens output. The model supports extended reasoning, a 131K context window.
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Mistral Small 4vs GPT Mini (120b)Frequently Asked Questions about GPT Mini (120b)▼
When was GPT Mini (120b) released?
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GPT Mini (120b) was released on August 5, 2025.
Who created GPT Mini (120b)?
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GPT Mini (120b) was created by OpenAI.
How capable is GPT Mini (120b)?
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GPT Mini (120b) has a Capability Index of 73.2/100, making it comparable to the field average. It ranks #49 out of 92 models.
How much does GPT Mini (120b) cost?
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GPT Mini (120b) costs $0.04/M input tokens and $0.17/M output tokens.
What is GPT Mini (120b) API pricing?
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The GPT Mini (120b) API is priced at $0.04 per million input tokens and $0.17 per million output tokens. You can access GPT Mini (120b) through idapt.app alongside 200+ other AI models in one workspace.
Is GPT Mini (120b) a reasoning model?
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Yes, GPT Mini (120b) is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does GPT Mini (120b) support image or vision input?
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No, GPT Mini (120b) does not currently support image or vision input. It is a text-only model.
Does GPT Mini (120b) support audio?
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No, GPT Mini (120b) does not support audio input.
What is the context window of GPT Mini (120b)?
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GPT Mini (120b) has a context window of 131K tokens, meaning it can process approximately 98,304 words of context at once.
Is GPT Mini (120b) open source?
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GPT Mini (120b) is a proprietary model developed by OpenAI. The model weights and training data are not publicly available.
Where can I use GPT Mini (120b)?
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You can chat with GPT Mini (120b) on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access GPT Mini (120b) through OpenAI's own API or platform.