OpenAI Releases GPT-5.6 Model Series, Microsoft Copilot Integration Announced
AI research lab OpenAI has launched its new GPT-5.6 model series across ChatGPT, Codex, and its API. Microsoft confirmed an immediate integration of these models into its Copilot products.
OpenAI announced on July 10th the release of its GPT-5.6 series of AI models, making them available in ChatGPT, Codex, and through its API. The new model series includes three tiers: Sol, Terra, and Luna, with Sol positioned as the company's most advanced model.
The Sol model introduces new capabilities, including 'Max inference strength' and an 'Ultra mode' designed to accelerate complex tasks. OpenAI reported that Sol achieved a score of 88.8% on the Terminal-Bench 2.1 benchmark in standard mode, surpassing the Claude Mythos 5 model, and reached 91.9% in Ultra mode for coding tasks.
Microsoft CEO Satya Nadella announced via social media that the GPT-5.6 models are now integrated into Microsoft's Copilot suite. This includes Copilot Chat, Cowork, M365 applications, GitHub, and Foundry. The integration signifies a significant step in bringing OpenAI's latest AI advancements to Microsoft's user base.
The new models come with distinct pricing structures. The flagship Sol model is priced at $5 per million input tokens and $30 per million output tokens. Terra is available at $2.50 for input and $15 for output, while the cost-efficient Luna model is priced at $1 for input and $6 for output.