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GPT-5.6 SolAPI
GPT-5.6 Sol (OpenAI): live API pricing, context window and the best open-source alternatives, tracked daily by OpenSourceAI.tech.
Prices update automatically — checked hourly against provider list prices.
Benchmarks & performance
Independent benchmark scores for GPT-5.6 Sol, measured by Artificial Analysis. Higher is better. Measurement mode: max.
About this model
GPT-5.6 Sol is a commercial AI model by OpenAI. The specifications below are tracked automatically: pricing is refreshed hourly from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is GPT-5.6 Sol?
GPT-5.6 Sol is an AI language model from OpenAI. It is a proprietary model, available through an API. It scores 58.9 on the Artificial Analysis intelligence index.
Is GPT-5.6 Sol free?
GPT-5.6 Sol is not free: it costs $5 per million input tokens and $30 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is GPT-5.6 Sol good at?
Independent benchmarks from Artificial Analysis give it GPQA 94.1%, Humanity's Last Exam 47.2%, Long Context Reasoning 73.7%, SciCode 56.1%, IFBench 72.7%, τ²-Bench 85.1%, τ-Bench Banking 33%, Terminal-Bench 88%, Terminal-Bench Hard 65.9%. It is particularly used for code generation.
How fast is GPT-5.6 Sol?
It generates about 71.7 tokens per second, with a median 56.83s delay before the first token. Measured independently by Artificial Analysis.
Open-source alternatives
Depending on your workload, an open-weight model that you can self-host may cut costs dramatically or remove per-token pricing entirely. Our comparison pages put this model side by side with the strongest open-source contenders.