Skip to content

anthropic: Pass beta header for speed in BYOK #57707

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
tomhoule merged 1 commit into from
May 26, 2026
+7 −1
Merged

anthropic: Pass beta header for speed in BYOK #57707

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 7 additions & 1 deletion crates/anthropic/src/anthropic.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ pub mod batches;
pub mod completion;

pub const ANTHROPIC_API_URL: &str = "https://api.anthropic.com";
const FAST_MODE_BETA_HEADER: &str = "fast-mode-2026-02-01";

#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
#[derive(Clone, Debug, Default, Serialize, Deserialize, PartialEq)]
Expand Down Expand Up @@ -149,6 +150,11 @@ impl Model {

let supports_speed = matches!(entry.id.as_str(), "claude-opus-4-6" | "claude-opus-4-7");

let mut extra_beta_headers = Vec::new();
if supports_speed {
extra_beta_headers.push(FAST_MODE_BETA_HEADER.to_string());
}

@tomhoule tomhoule May 26, 2026

Copy link
Copy Markdown
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This is mediated through supported_speed, which works in practice, but we could have the speed as an extra parameter on beta_headers instead, which is a bit uglier, but closer to where we actually build the request. I went back and forth between these two options. LMK it the other one sounds better.


Self {
display_name: entry.display_name,
id: entry.id,
Expand All @@ -162,7 +168,7 @@ impl Model {
supports_speed,
supported_effort_levels,
tool_override: None,
extra_beta_headers: Vec::new(),
extra_beta_headers,
}
}

Expand Down
Loading