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Overview

The generate() method is the recommended way to execute your agent when you want automatic trace collection, timing, and inference result creation. It handles the complete lifecycle:
  1. Initializes trace collection
  2. Executes your agent with timing measurement
  3. Creates/updates the inference result with all metadata
  4. Saves collected traces to the platform
  5. Cleans up trace context (prevents memory leaks)
This is the recommended method for production use as it handles all trace lifecycle management automatically.

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Method Signature

galtea.inference_results.generate(
    agent: Agent,
    session: Session,
    user_input: str,
    inference_result_id: Optional[str] = None
) -> InferenceResult

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Parameters

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agent
Agent
required
An instance of a class that extends galtea.Agent. Must implement the call() method.
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session
Session
required
The session object to associate the inference result with. Obtain via galtea.sessions.create() or galtea.sessions.get().
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user_input
string
required
The user’s input message to send to the agent.
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inference_result_id
string
Optional ID of an existing inference result to update. If not provided, a new inference result is created.

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Returns

Returns an InferenceResult object with all captured data.

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Example

from galtea import Galtea, Agent, AgentInput, AgentResponse, trace, NodeType

galtea = Galtea(api_key="YOUR_API_KEY")

# Define your agent with traced operations
class MyAgent(Agent):
    @trace(name="search", node_type=NodeType.RETRIEVER)
    def search(self, query: str) -> list:
        return [{"doc": "relevant content"}]
    
    @trace(name="generate", node_type=NodeType.LLM)
    def generate_response(self, context: list, query: str) -> str:
        return f"Based on the context: {context}"
    
    @trace(name="main", node_type=NodeType.CHAIN)
    def call(self, input: AgentInput) -> AgentResponse:
        query = input.last_user_message_str()
        context = self.search(query)
        response = self.generate_response(context, query)
        return AgentResponse(
            content=response,
            retrieval_context=str(context)
        )

# Create resources
product = galtea.products.get_by_name("My Product")
version = galtea.versions.create(name="v1.0", product_id=product.id)
session = galtea.sessions.create(version_id=version.id)

# Create agent and run with automatic trace collection
agent = MyAgent()

inference_result = galtea.inference_results.generate(
    agent=agent,
    session=session,
    user_input="What's the product pricing?"
)

print(f"Response: {inference_result.actual_output}")
print(f"Latency: {inference_result.latency}ms")
# Traces are automatically saved to the platform!

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What Gets Captured

The generate() method automatically captures and saves:
DataSourceDescription
Inputuser_input parameterThe user’s message
OutputAgentResponse.contentThe agent’s response
Retrieval ContextAgentResponse.retrieval_contextContext used (for RAG)
LatencyMeasuredEnd-to-end execution time in ms
Usage InfoAgentResponse.usage_infoToken counts (if provided)
Cost InfoAgentResponse.cost_infoCost data (if provided)
Traces@trace decoratorsAll traced operations

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Providing Usage and Cost Information

Your agent can return usage and cost information in the AgentResponse: 
class MyAgent(Agent):
    @trace(name="main")
    def call(self, input: AgentInput) -> AgentResponse:
        # Your agent logic...
        
        return AgentResponse(
            content="Response content",
            usage_info={
                "input_tokens": 150,
                "output_tokens": 75,
                "cache_read_input_tokens": 50
            },
            cost_info={
                "cost_per_input_token": 0.00001,
                "cost_per_output_token": 0.00003,
                "cost_per_cache_read_input_token": 0.000001
            }
        )

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Comparison with Manual Approach

Featuregenerate()Manual
Trace initializationAutomatictraces.start_collection_context()
Agent executionAutomaticManual call
Timing measurementAutomaticManual
Inference resultAuto-createdinference_results.create()
Trace savingAutomatictraces.save_context()
Memory cleanupAutomatictraces.clear_context()
Error handlingBuilt-inManual try/finally
Use generate() for production workloads. Use manual trace collection when you need fine-grained control or are debugging.

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Error Handling

If the agent raises an exception, generate() ensures trace context is cleaned up: 
try:
    result = galtea.inference_results.generate(
        agent=agent,
        session=session,
        user_input="test"
    )
except Exception as e:
    # Trace context is automatically cleaned up
    print(f"Agent failed: {e}")