Enum UnifiedStreamEvent 

#[non_exhaustive]
pub enum UnifiedStreamEvent {
    ContentDelta(String),
    ReasoningDelta(String),
    ReasoningDetailsDelta(Vec<ReasoningDetail>),
    ToolDelta(Value),
    Raw {
        source: UnifiedStreamSource,
        event_type: String,
        data: Value,
    },
    Done {
        source: UnifiedStreamSource,
        id: Option<String>,
        model: Option<String>,
        finish_reason: Option<String>,
        usage: Option<Value>,
    },
    Error(OpenRouterError),
}

Unified stream event model across chat/responses/messages APIs.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ContentDelta(String)

Text content delta from the model.

ReasoningDelta(String)

Reasoning/thinking delta.

ReasoningDetailsDelta(Vec<ReasoningDetail>)

Structured reasoning detail blocks (chat stream only).

ToolDelta(Value)

Tool-related delta payload (format depends on source API).

Raw

Source-specific event payload when no common projection applies.

Fields

source: UnifiedStreamSource

event_type: String

data: Value

Done

Terminal event for a stream source.

Fields

source: UnifiedStreamSource

id: Option<String>

model: Option<String>

finish_reason: Option<String>

usage: Option<Value>

Error(OpenRouterError)

Transport/parsing/runtime error from the underlying stream.

Trait Implementations

impl Debug for UnifiedStreamEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.