Model comparison
Claude Opus 4.8 vs GPT-6 Sol
List rate, corouter rate, context, and which ID to send for claude-opus-4-8 versus gpt-6-sol. A sample of 1 million input tokens plus 200 thousand output tokens is about $2.00 on corouter (input $1.00, output $1.00). A sample of 1 million input tokens plus 200 thousand output tokens is about $0.800 on corouter (input $0.400, output $0.400).
| Claude Opus 4.8 | GPT-6 Sol | |
|---|---|---|
| ID | claude-opus-4-8 | gpt-6-sol |
| Vendor | Anthropic | OpenAI |
| List input | $5.00 | $2.00 |
| corouter input | $1.00 | $0.400 |
| List output | $25.00 | $10.00 |
| corouter output | $5.00 | $2.00 |
| Cache read | $0.100 | $0.040 |
| Context | 1M | 1.1M |
Price gap
On output, GPT-6 Sol is lower: $2.00 on corouter versus $5.00 for Claude Opus 4.8, about 2.50×. Input is $0.400 versus $1.00.
Window and modalities
GPT-6 Sol lists a 1.1M window and Claude Opus 4.8 lists 1M. A larger window does not change the per-token rate. Prompts past the window need a split or a different ID. Claude Opus 4.8 is listed with these modalities: Chat, Vision, Reasoning. GPT-6 Sol is listed with these modalities: Chat, Reasoning, Code, Vision.
When to send claude-opus-4-8
Claude Opus 4.8 matches the Opus 5 list rate and window, without the Opus 5.5 cache-read cut. Send claude-opus-4-8 to keep an Opus 4.8 client unchanged.
This ID uses the familiar messages JSON shape. The other side is gpt-6-sol from OpenAI. corouter is not affiliated with OpenAI or Anthropic.
When to send gpt-6-sol
GPT-6 Sol keeps the 1.05M window and lists well below Astra on both input and output. Send gpt-6-sol for the same request shape at the lower GPT-6 rate.
This ID uses the familiar chat-completions JSON shape. The other side is claude-opus-4-8 from Anthropic. corouter is not affiliated with OpenAI or Anthropic.
The same volume, two bills
A sample of 1 million input tokens plus 200 thousand output tokens is about $2.00 on corouter (input $1.00, output $1.00).
A sample of 1 million input tokens plus 200 thousand output tokens is about $0.800 on corouter (input $0.400, output $0.400).
Questions
- Which output rate is lower, Claude Opus 4.8 or GPT-6 Sol?
- On output, GPT-6 Sol is lower: $2.00 on corouter versus $5.00 for Claude Opus 4.8, about 2.50×. Input is $0.400 versus $1.00.
- 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.