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GPT-5.6 SolAPI
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series.
Prices update automatically — checked daily against provider list prices.
- $4 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 31% of the 192 commercial models tracked here
- 56 of 88 OpenAI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for GPT-5.6 Sol, measured by Artificial Analysis. Higher is better. Measurement mode: max.
Models at this level cost $6 per 1M tokens (median of 6) — this one costs $4.
No model tracked here is both cheaper and better on this index.
About this model
GPT-5.6 Sol is a commercial AI model by OpenAI. The specifications below are tracked automatically: pricing is refreshed daily 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 60.9 on the Artificial Analysis intelligence index.
Is GPT-5.6 Sol free?
GPT-5.6 Sol is not free: it costs $2 per million input tokens and $10 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 49.5%, Long Context Reasoning 77.7%, SciCode 56.1%, IFBench 72.7%, τ²-Bench 85.1%, τ-Bench Banking 44.3%, 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 77.6 tokens per second, with a median 61.46s delay before the first token. Measured independently by Artificial Analysis.