Model comparison
GPT-6 Astra vs Claude Sonnet 4.6
List rate, corouter rate, context, and which ID to send for gpt-6-astra versus claude-sonnet-4-6. A sample of 1 million input tokens plus 200 thousand output tokens is about $4.00 on corouter (input $2.00, output $2.00). A sample of 1 million input tokens plus 200 thousand output tokens is about $1.20 on corouter (input $0.600, output $0.600).
| GPT-6 Astra | Claude Sonnet 4.6 | |
|---|---|---|
| ID | gpt-6-astra | claude-sonnet-4-6 |
| Vendor | OpenAI | Anthropic |
| List input | $10.00 | $3.00 |
| corouter input | $2.00 | $0.600 |
| List output | $50.00 | $15.00 |
| corouter output | $10.00 | $3.00 |
| Cache read | $0.200 | $0.060 |
| Context | 1.1M | 1M |
Price gap
On output, Claude Sonnet 4.6 is lower: $3.00 on corouter versus $10.00 for GPT-6 Astra, about 3.33×. Input is $0.600 versus $2.00.
Window and modalities
GPT-6 Astra lists a 1.1M window and Claude Sonnet 4.6 lists 1M. A larger window does not change the per-token rate. Prompts past the window need a split or a different ID. GPT-6 Astra is listed with these modalities: Chat, Reasoning, Code, Vision. Claude Sonnet 4.6 is listed with these modalities: Chat, Vision, Code.
When to send gpt-6-astra
GPT-6 Astra is the highest standard list rate in the GPT rows here. Send gpt-6-astra when the task is worth that output rate and you want the 1.05M window with image input.
This ID uses the familiar chat-completions JSON shape. The other side is claude-sonnet-4-6 from Anthropic. corouter is not affiliated with OpenAI or Anthropic.
When to send claude-sonnet-4-6
Claude Sonnet 4.6 keeps the previous Sonnet list rate, above Sonnet 5, with a 1M window and the Code tag. Send claude-sonnet-4-6 when a runbook still names it.
This ID uses the familiar messages JSON shape. The other side is gpt-6-astra from OpenAI. 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 $4.00 on corouter (input $2.00, output $2.00).
A sample of 1 million input tokens plus 200 thousand output tokens is about $1.20 on corouter (input $0.600, output $0.600).
Questions
- Which output rate is lower, GPT-6 Astra or Claude Sonnet 4.6?
- On output, Claude Sonnet 4.6 is lower: $3.00 on corouter versus $10.00 for GPT-6 Astra, about 3.33×. Input is $0.600 versus $2.00.
- 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.