Model comparison
GPT-5.5 vs GPT-5.6 Sol
List rate, corouter rate, context, and which ID to send for gpt-5.5 versus gpt-5.6-sol. A sample of 1 million input tokens plus 200 thousand output tokens is about $2.20 on corouter (input $1.00, output $1.20). A sample of 1 million input tokens plus 200 thousand output tokens is about $2.20 on corouter (input $1.00, output $1.20).
| GPT-5.5 | GPT-5.6 Sol | |
|---|---|---|
| ID | gpt-5.5 | gpt-5.6-sol |
| Vendor | OpenAI | OpenAI |
| List input | $5.00 | $5.00 |
| corouter input | $1.00 | $1.00 |
| List output | $30.00 | $30.00 |
| corouter output | $6.00 | $6.00 |
| Cache read | $0.100 | $0.100 |
| Context | 1.1M | 1.1M |
Price gap
GPT-5.5 and GPT-5.6 Sol share the same corouter input and output rates: $1.00 input and $6.00 output. The difference in this pair is the model ID, not the rate card.
Window and modalities
Both windows are 1.1M. GPT-5.5 is listed with these modalities: Chat, Reasoning, Code, Vision. GPT-5.6 Sol is listed with these modalities: Chat, Reasoning, Code, Vision.
When to send gpt-5.5
GPT-5.5 keeps the high GPT-5.6 Sol list rate and the Code tag. Send gpt-5.5 when a workload was already qualified on that exact ID.
Both are OpenAI IDs. The field you change is model: gpt-5.5 or gpt-5.6-sol.
When to send gpt-5.6-sol
GPT-5.6 Sol remains the high GPT-5.6 ID, with a list rate above GPT-6 Sol and below GPT-6 Astra. Send gpt-5.6-sol when an existing client already pins that ID.
Both are OpenAI IDs. The field you change is model: gpt-5.6-sol or gpt-5.5.
The same volume, two bills
A sample of 1 million input tokens plus 200 thousand output tokens is about $2.20 on corouter (input $1.00, output $1.20).
A sample of 1 million input tokens plus 200 thousand output tokens is about $2.20 on corouter (input $1.00, output $1.20).
Questions
- Which output rate is lower, GPT-5.5 or GPT-5.6 Sol?
- GPT-5.5 and GPT-5.6 Sol share the same corouter input and output rates: $1.00 input and $6.00 output. The difference in this pair is the model ID, not the rate card.
- Is corouter affiliated with the model vendors?
- No. corouter is not affiliated with OpenAI or Anthropic. Vendor names identify the model and the published list rate.
- How do you start billing?
- Create a console account and spend prepaid credits. The minimum top-up is $5. The API base is https://api.corouter.co. Put the ID you chose in the model field.

