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fix: added claude haiku support in backend rust #7188

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fix: added claude haiku support in backend rust #7188

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75aff14
fix: added claude haiku support in backend rust
shodown96 May 6, 2026
ef3f39f
fix: updated the test to include omi-haiku
shodown96 May 6, 2026
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32 changes: 16 additions & 16 deletions desktop/Backend-Rust/src/models/chat_completions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -231,23 +231,16 @@ pub struct AnthropicUsage {
#[serde(tag = "type")]
pub enum AnthropicStreamEvent {
#[serde(rename = "message_start")]
MessageStart {
message: AnthropicStreamMessage,
},
MessageStart { message: AnthropicStreamMessage },
#[serde(rename = "content_block_start")]
ContentBlockStart {
index: usize,
content_block: AnthropicContentBlock,
},
#[serde(rename = "content_block_delta")]
ContentBlockDelta {
index: usize,
delta: AnthropicDelta,
},
ContentBlockDelta { index: usize, delta: AnthropicDelta },
#[serde(rename = "content_block_stop")]
ContentBlockStop {
index: usize,
},
ContentBlockStop { index: usize },
#[serde(rename = "message_delta")]
MessageDelta {
delta: AnthropicMessageDelta,
Expand All @@ -258,9 +251,7 @@ pub enum AnthropicStreamEvent {
#[serde(rename = "ping")]
Ping {},
#[serde(rename = "error")]
Error {
error: AnthropicStreamError,
},
Error { error: AnthropicStreamError },
}

#[derive(Debug, Clone, Deserialize)]
Expand Down Expand Up @@ -339,6 +330,16 @@ pub const MODEL_ROUTES: &[ModelRoute] = &[
upstream_model: "claude-sonnet-4-6",
provider: Provider::Anthropic,
},
ModelRoute {
public_model: "omi-haiku",
upstream_model: "claude-haiku-4-5-20251001",
provider: Provider::Anthropic,
},
ModelRoute {
public_model: "claude-haiku-4-5-20251001",
upstream_model: "claude-haiku-4-5-20251001",
provider: Provider::Anthropic,
},
];

pub fn resolve_model(model: &str) -> Option<&'static ModelRoute> {
Expand All @@ -358,9 +359,8 @@ pub fn map_stop_reason(anthropic_reason: Option<&str>) -> Option<String> {
}

pub fn anthropic_usage_to_openai(usage: &AnthropicUsage) -> Usage {
let prompt_tokens = usage.input_tokens
+ usage.cache_creation_input_tokens
+ usage.cache_read_input_tokens;
let prompt_tokens =
usage.input_tokens + usage.cache_creation_input_tokens + usage.cache_read_input_tokens;
let completion_tokens = usage.output_tokens;
Usage {
prompt_tokens,
Expand Down
15 changes: 14 additions & 1 deletion desktop/Backend-Rust/src/routes/chat_completions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,12 @@ fn model_cost(upstream_model: &str) -> ModelCost {
cache_read_per_token: 1.50 / 1_000_000.0,
cache_write_per_token: 18.75 / 1_000_000.0,
},
"claude-haiku-4-5-20251001" => ModelCost {
input_per_token: 0.80 / 1_000_000.0,
output_per_token: 4.00 / 1_000_000.0,
cache_read_per_token: 0.08 / 1_000_000.0,
cache_write_per_token: 1.00 / 1_000_000.0,
},
_ => ModelCost {
input_per_token: 3.0 / 1_000_000.0,
output_per_token: 15.0 / 1_000_000.0,
Expand Down Expand Up @@ -926,6 +932,14 @@ mod tests {
assert_eq!(route.upstream_model, "claude-opus-4-6");
}

#[test]
fn test_resolve_model_haiku() {
let route = resolve_model("omi-haiku").unwrap();
assert_eq!(route.public_model, "omi-haiku");
assert_eq!(route.upstream_model, "claude-haiku-4-5-20251001");
assert_eq!(route.provider, Provider::Anthropic);
}

#[test]
fn test_resolve_model_claude_aliases() {
let route = resolve_model("claude-opus-4-6").unwrap();
Expand All @@ -948,7 +962,6 @@ mod tests {
fn test_resolve_model_unknown() {
assert!(resolve_model("gpt-4").is_none());
assert!(resolve_model("").is_none());
assert!(resolve_model("omi-haiku").is_none());
}

#[test]
Expand Down