GPT-5.6 Sol
OpenAI’s flagship from July 2026, kept for long coding work built on it.
About GPT-5.6 Sol
GPT-5.6 Sol led OpenAI’s line from July 2026 until GPT-6 arrived in September. OpenAI positioned it as its strongest model for coding, science and security at the time, and it still holds one of the better coding scores here: 72.7% on DeepSWE, higher than the GPT-6 Sol that replaced it.
Its reasoning runs from none to max. Reviewers found it more willing than earlier GPTs to go beyond what it was asked, which suits long agent tasks and needs watching in anything customer-facing. Newer GPT-6 models now do most of the same work for less.
Where it’s strong
Long coding tasks that need planning and follow-through.
Security research.
Products validated on GPT-5.6 that should not change model.
Where to be careful
Can act beyond what you asked. Keep a person or a check in the loop for actions that matter.
Slow to start at high effort: one independent measurement put the wait before the first word at over two minutes.
Its knowledge stops in February 2026, and the GPT-6 models have overtaken it.
Price in rupees
For scale: 1,000 requests of about 3,000 tokens in and 1,000 out cost $36.80 — a long prompt and a page of answer each. Every rate is published and stays the same from one request to the next. See every model.
Specs
gpt-5.6-solUsing it from Sri Lanka
GPT-5.6 Sol is billed in rupees, on the same monthly invoice as every other model your team uses — no foreign card, no separate OpenAI account, and one key for all of it.
Prompts sent to GPT-5.6 Sol are processed outside Sri Lanka. If a workload has to stay in the country, Qwen3.8-27B (Colombo) runs on our own servers in Colombo.
Call it
Use the OpenAI SDK you already have — point it at Roar AI and name the model. Read the docs.
from openai import OpenAI
client = OpenAI(base_url="https://api.roar-ai.com/v1", api_key="roar_live_…")
reply = client.chat.completions.create(
model="gpt-5.6-sol",
messages=[{"role": "user", "content": "Summarise this contract in plain English."}],
)Compare GPT-5.6 Sol
Questions
How much does GPT-5.6 Sol cost in Sri Lanka?
Input is $4.60 per 1M tokens; output is $23.00 per 1M tokens. For scale, 1,000 requests of about 3,000 tokens in and 1,000 out cost $36.80. The rate is published and does not change from one request to the next.
Can I pay for GPT-5.6 Sol in Sri Lankan rupees?
Yes. Usage is billed to one monthly invoice in rupees, together with every other model your team uses, and you can also pay by card. There is no separate OpenAI account to open and no foreign card needed.
Does GPT-5.6 Sol keep data in Sri Lanka?
No — prompts sent to GPT-5.6 Sol are processed outside Sri Lanka. If your data has to stay in the country, use Qwen3.8-27B (Colombo), which runs on our servers in Colombo.
Is GPT-5.6 Sol open source?
No. OpenAI does not publish the weights, so it is only available through an API like this one.