Model comparison
Claude Opus 4.8 vs Claude Opus 5
List rate, corouter rate, context, and which ID to send for claude-opus-4-8 versus claude-opus-5. 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 $2.00 on corouter (input $1.00, output $1.00).
| Claude Opus 4.8 | Claude Opus 5 | |
|---|---|---|
| ID | claude-opus-4-8 | claude-opus-5 |
| Vendor | Anthropic | Anthropic |
| List input | $5.00 | $5.00 |
| corouter input | $1.00 | $1.00 |
| List output | $25.00 | $25.00 |
| corouter output | $5.00 | $5.00 |
| Cache read | $0.100 | $0.100 |
| Context | 1M | 1M |
Price gap
Claude Opus 4.8 and Claude Opus 5 share the same corouter input and output rates: $1.00 input and $5.00 output. The difference in this pair is the model ID, not the rate card.
Window and modalities
Both windows are 1M. Claude Opus 4.8 is listed with these modalities: Chat, Vision, Reasoning. Claude Opus 5 is listed with these modalities: Chat, Vision, Reasoning.
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.
Both are Anthropic IDs. The field you change is model: claude-opus-4-8 or claude-opus-5.
When to send claude-opus-5
Claude Opus 5 lists at the same input and output rate as Opus 4.6, 4.7, and 4.8. Send claude-opus-5 when the client names Opus 5 rather than an Opus 4 ID.
Both are Anthropic IDs. The field you change is model: claude-opus-5 or claude-opus-4-8.
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 $2.00 on corouter (input $1.00, output $1.00).
Questions
- Which output rate is lower, Claude Opus 4.8 or Claude Opus 5?
- Claude Opus 4.8 and Claude Opus 5 share the same corouter input and output rates: $1.00 input and $5.00 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.