Model comparison
Claude Opus 4.6 vs Claude Sonnet 4.6
List rate, corouter rate, context, and which ID to send for claude-opus-4-6 versus claude-sonnet-4-6. A sample of 1 million input tokens plus 200 thousand output tokens is about $8.00 on corouter (input $4.00, output $4.00). A sample of 1 million input tokens plus 200 thousand output tokens is about $4.80 on corouter (input $2.40, output $2.40).
| Claude Opus 4.6 | Claude Sonnet 4.6 | |
|---|---|---|
| ID | claude-opus-4-6 | claude-sonnet-4-6 |
| Vendor | Anthropic | Anthropic |
| List input | $5.00 | $3.00 |
| corouter input | $4.00 | $2.40 |
| List output | $25.00 | $15.00 |
| corouter output | $20.00 | $12.00 |
| Cache read | $0.400 | $0.240 |
| Context | 1M | 1M |
Price gap
On output, Claude Sonnet 4.6 is lower: $12.00 on corouter versus $20.00 for Claude Opus 4.6, about 1.67×. Input is $2.40 versus $4.00.
Window and modalities
Both windows are 1M. Claude Opus 4.6 is listed with these modalities: Chat, Vision, Reasoning. Claude Sonnet 4.6 is listed with these modalities: Chat, Vision, Code.
When to send claude-opus-4-6
Claude Opus 4.6 is the earliest Opus 4 ID still on this rate card, at the same list rate as Opus 4.7. Send claude-opus-4-6 only when that older ID is the one in the request.
Both are Anthropic IDs. The field you change is model: claude-opus-4-6 or claude-sonnet-4-6.
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.
Both are Anthropic IDs. The field you change is model: claude-sonnet-4-6 or claude-opus-4-6.
The same volume, two bills
A sample of 1 million input tokens plus 200 thousand output tokens is about $8.00 on corouter (input $4.00, output $4.00).
A sample of 1 million input tokens plus 200 thousand output tokens is about $4.80 on corouter (input $2.40, output $2.40).
Questions
- Which output rate is lower, Claude Opus 4.6 or Claude Sonnet 4.6?
- On output, Claude Sonnet 4.6 is lower: $12.00 on corouter versus $20.00 for Claude Opus 4.6, about 1.67×. Input is $2.40 versus $4.00.
- 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.