# Heroku AI Expands Model Offering with OpenAI's gpt-oss-120b

DevFeed: [Heroku AI Expands Model Offering with OpenAI's gpt-oss-120b](<https://devfeed.tech/articles/heroku-ai-expands-model-offering-with-openai-s-gpt-oss-120b-26415.md>)

Original publisher: [Read original article](<https://www.heroku.com/blog/heroku-ai-openai-gpt-oss-120b-model-now-available/>)

Author: Anush DSouza

Published: 2025-08-20T15:00:14Z

Content type: release

Language: en

Sources: [Heroku](<https://devfeed.tech/sources/heroku.md>)

Topics: [Heroku AI](<https://devfeed.tech/topics/heroku-ai.md>), [gpt-oss](<https://devfeed.tech/topics/gpt-oss.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [Heroku](<https://devfeed.tech/topics/heroku.md>), [API](<https://devfeed.tech/topics/api.md>), [Mixture of Experts (MoE)](<https://devfeed.tech/topics/mixture-of-experts-moe.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>), [Open Source Models & Datasets](<https://devfeed.tech/topics/open-source-models-datasets.md>)

Tags: [agents](<https://devfeed.tech/tags/agents.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-infrastructure](<https://devfeed.tech/tags/ai-infrastructure.md>), [ai-machine-learning](<https://devfeed.tech/tags/ai-machine-learning.md>), [api](<https://devfeed.tech/tags/api.md>), [deploy](<https://devfeed.tech/tags/deploy.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [function-calling](<https://devfeed.tech/tags/function-calling.md>), [gpt-oss](<https://devfeed.tech/tags/gpt-oss.md>), [heroku](<https://devfeed.tech/tags/heroku.md>), [heroku-ai](<https://devfeed.tech/tags/heroku-ai.md>), [managed-inference-and-agents](<https://devfeed.tech/tags/managed-inference-and-agents.md>), [mixture-of-experts-moe](<https://devfeed.tech/tags/mixture-of-experts-moe.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [openai](<https://devfeed.tech/tags/openai.md>), [python](<https://devfeed.tech/tags/python.md>), [sdk](<https://devfeed.tech/tags/sdk.md>)

## AI overview

Heroku announces that OpenAI's open-weight gpt-oss-120b model is available through Heroku Managed Inference and Agents. Developers can access it through an OpenAI-compatible chat completions API and use it to build and deploy AI applications and agentic workflows.

## Source excerpt

Start building with OpenAI's new open-weight model, gpt-oss-120b, now available on Heroku Managed Inference and Agents. This gives developers a powerful, transparent, and flexible way to build and deploy AI applications on the platform they already trust. Access gpt-oss-120b with our OpenAI-compatible chat completions API, which you can drop into any OpenAI-compatible SDK or framework. [...] The post Heroku AI Expands Model Offering with OpenAI's gpt-oss-120b appeared first on Heroku.