Compaction

Compaction capabilities manage conversation context size by compacting older messages into summaries. Compaction is provider-specific — each capability uses the corresponding provider API:

Provider	Capability	Details
OpenAI Responses API	[OpenAICompaction][pydantic_ai.models.openai.OpenAICompaction]	OpenAI compaction
Anthropic	[AnthropicCompaction][pydantic_ai.models.anthropic.AnthropicCompaction]	Anthropic compaction