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OpenAI has launched its upgraded 'o1' reasoning model, making it available through its API to a select group of top-tier developers. This rollout is part of OpenAI's "12 Days of OpenAI" campaign, and access is initially limited to developers in the "Tier 5" category who have spent at least $1,000 per month and have an account for over a month. This new 'o1' model is a significant upgrade from the 'o1-preview' version and includes enhanced capabilities such as function calling, which allows the model to connect to external data sources, structured JSON outputs, and image analysis. The model is more customizable, with a new 'reasoning_effort' parameter that allows developers to control how long the model thinks about a query.

The 'o1' model is also more expensive due to the computing power required. It costs $15 for every 750,000 words analyzed and $60 for every 750,000 words generated, which is almost four times as expensive as the GPT-4o model. OpenAI has also integrated GPT-4o and GPT-4o mini models into the Realtime API and added WebRTC support for real-time voice applications. Additionally, they have introduced direct preference optimization for fine-tuning AI models, enabling developers to refine their models more efficiently by providing preferred answers instead of input/output pairs. The company noted this newer model boasts improvements, offering better accuracy and fewer prompt rejections and specifically, better performance with math and programming tasks.

References:

• NextBigFuture.com - OpenAI o1 Pro Mode Costs $200 Per Month and GPT5 Slipping to May 2025 - 6d
• www.techmeme.com - OpenAI adds o1 to its API, but only for certain developers to start, announces new versions of GPT-4o and GPT-4o mini as part of its Realtime API, and more (Kyle Wiggers/TechCrunch) - 3d
• Dave's linkblog feed - OpenAI’s API users get full access to the new o1 model Newest API upgrade also includes fine-tuning and real-time interaction improvements. - 3d
• TechCrunch - OpenAI brings its o1 reasoning model to its API — for certain developers - 3d
• THE DECODER - OpenAI's upgraded o1 model brings function calling, image analysis, and more to the API - 3d
• Techzine Global - OpenAI launches o1 reasoning model exclusively for top developers - 3d
• SiliconANGLE - OpenAI’s makes the full version of its o1 reasoning model available, but only to some developers - 3d

Classification:

• HashTags: OpenAI o1model AI
• Company: OpenAI
• Target: AI Developers
• Product: o1 model
• Feature: AI Model
• Type: AI
• Severity: Informative