Claude Sonnet 5 API Proxy 2026: Integration and Billing Guide
The specific release date of Claude Sonnet 5 has yet to be verified in testing. The current model identifier in the dashboard is claude-sonnet-5. This article explains which model name, baseline price, group multiplier, and request configuration to verify when calling this model through a proxy.
What's new: Dashboard Data Updates
- Pricing data comes from https://api.openlux.ai/api/pricing, retrieved at 2026-08-04T16:16:08Z.
- The dashboard shows a total of 452 models currently available; the provided list includes only the 150 models with higher usage.
- claude-sonnet-5 appears in the dashboard pricing data and is marked as type chat.
- The model's baseline price is $2 / 1 million tokens for input, $10 / 1 million tokens for output, and $0.2 / 1 million tokens for cache hits.
- The actual billed price is calculated by multiplying the baseline price by the user's group multiplier. Confirm the current group in the dashboard before making calls.
What is Claude Sonnet 5 API proxy?
An API gateway sits between your code and the model vendors: you send OpenAI-format requests, and it handles routing, protocol translation, and metering.
The hard part of shipping on claude-sonnet-5 is rarely the model itself — it is the integration sprawl that shows up once you add a second provider.
OpenLux runs this layer as a hosted service: OpenLux Claude Sonnet 5 API proxy aggregates 452 models currently available (dashboard data; at the time this page's data was retrieved) major models behind one OpenAI-compatible endpoint, with a single API key and a single invoice.
Supported models and pricing
| Model | Use cases | Context | Input price | Output price | Measured time to first token |
|---|---|---|---|---|---|
| claude-sonnet-5 | General text and chat use cases; verify actual performance through business testing | 1 million tokens | $2 / 1 million tokens (baseline price, billed according to the group multiplier) | $10 / 1 million tokens (baseline price, billed according to the group multiplier) | To be verified in testing |
Pricing on OpenLux is authoritative; this page was updated 2026-08-05.
Why route through a gateway?
- Call by model ID：Use claude-sonnet-5 as the model identifier in requests, making it easy to explicitly pin the target model in your application configuration.
- Pricing rules can be verified：Both the baseline price and group multiplier come from the dashboard pricing data; the actual cost is calculated as “baseline price × user group multiplier.”
- Cache-hit pricing is listed：The baseline cache-hit price for claude-sonnet-5 is $0.2 / 1 million tokens. Whether a cache hit occurs and the exact charge are determined by the actual request and invoice.
- Long-context specifications are provided：The model description indicates a default and maximum context window of 1 million tokens, with a maximum output limit of 128k tokens. Testing with the target request is still recommended before integration.
- View multiple models in the same dashboard：The dashboard data showed 452 models currently available when retrieved. The provided pricing table covers only 150 high-usage models and does not represent the complete list of available models.
All of the above is live on OpenLux — sign up and verify it yourself.
- How do you call the claude-sonnet-5 API?Setup steps and copy-pasteable code
- claude-sonnet-5: direct API or gateway?Point-by-point, including the limitations
- claude-sonnet-5 API — frequently asked questionsWhat people actually ask when integrating
Get started
First confirm the claude-sonnet-5 group and credentials in the dashboard, then complete integration validation with a minimal request
Official site: try it now
Last updated 2026-08-05 | Written and maintained by OpenLux.
Latency and pricing figures come from our own measurements. Where they differ from the vendor's site, the vendor's live page wins.