ai.pydantic.dev

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• name: description content: GenAI Agent Framework, the Pydantic way
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• property: og:title content: Pydantic AI
• property: og:description content: GenAI Agent Framework, the Pydantic way
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• property: twitter:title content: Pydantic AI
• property: twitter:description content: GenAI Agent Framework, the Pydantic way
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• Skip to content
• http://ai.pydantic.dev/.
• http://ai.pydantic.dev/#why-use-pydantic-ai
• http://ai.pydantic.dev/#hello-world-example
• http://ai.pydantic.dev/#tools-dependency-injection-example
• http://ai.pydantic.dev/#instrumentation-with-pydantic-logfire
• http://ai.pydantic.dev/#llmstxt
• giving it a try
• install it
• http://ai.pydantic.dev/help/
• http://ai.pydantic.dev/troubleshooting/
• http://ai.pydantic.dev/coding-agent-skills/
• http://ai.pydantic.dev/gateway/
• docs
• http://ai.pydantic.dev/dependencies/
• http://ai.pydantic.dev/tools/
• structured outputs
• capabilities
• http://ai.pydantic.dev/hooks/
• YAML/JSON
• http://ai.pydantic.dev/message-history/
• http://ai.pydantic.dev/direct/
• model
• http://ai.pydantic.dev/models/openai/
• http://ai.pydantic.dev/models/anthropic/
• http://ai.pydantic.dev/models/google/
• http://ai.pydantic.dev/models/xai/
• http://ai.pydantic.dev/models/bedrock/
• http://ai.pydantic.dev/models/cerebras/
• http://ai.pydantic.dev/models/cohere/
• http://ai.pydantic.dev/models/groq/
• http://ai.pydantic.dev/models/huggingface/
• http://ai.pydantic.dev/models/mistral/
• http://ai.pydantic.dev/models/openrouter/
• http://ai.pydantic.dev/models/outlines/
• http://ai.pydantic.dev/tools-advanced/
• http://ai.pydantic.dev/toolsets/
• http://ai.pydantic.dev/deferred-tools/
• http://ai.pydantic.dev/builtin-tools/
• http://ai.pydantic.dev/common-tools/
• http://ai.pydantic.dev/third-party-tools/
• http://ai.pydantic.dev/input/
• http://ai.pydantic.dev/thinking/
• http://ai.pydantic.dev/retries/
• Model Context Protocol
• http://ai.pydantic.dev/mcp/client/
• http://ai.pydantic.dev/mcp/fastmcp-client/
• http://ai.pydantic.dev/mcp/server/
• third-party capability packages
• http://ai.pydantic.dev/multi-agent-applications/
• http://ai.pydantic.dev/web/
• http://ai.pydantic.dev/embeddings/
• unit tests
• evaluate
• http://ai.pydantic.dev/evals/quick-start/
• http://ai.pydantic.dev/evals/core-concepts/
• http://ai.pydantic.dev/evals/evaluators/overview/
• http://ai.pydantic.dev/evals/evaluators/built-in/
• http://ai.pydantic.dev/evals/evaluators/llm-judge/
• http://ai.pydantic.dev/evals/evaluators/custom/
• http://ai.pydantic.dev/evals/evaluators/report-evaluators/
• http://ai.pydantic.dev/evals/evaluators/span-based/
• http://ai.pydantic.dev/evals/online-evaluation/
• http://ai.pydantic.dev/evals/how-to/logfire-integration/
• http://ai.pydantic.dev/evals/how-to/dataset-management/
• http://ai.pydantic.dev/evals/how-to/dataset-serialization/
• http://ai.pydantic.dev/evals/how-to/concurrency/
• http://ai.pydantic.dev/evals/how-to/multi-run/
• http://ai.pydantic.dev/evals/how-to/retry-strategies/
• http://ai.pydantic.dev/evals/how-to/metrics-attributes/
• http://ai.pydantic.dev/evals/how-to/lifecycle/
• http://ai.pydantic.dev/evals/examples/simple-validation/
• graphs
• http://ai.pydantic.dev/graph/beta/
• http://ai.pydantic.dev/graph/beta/steps/
• http://ai.pydantic.dev/graph/beta/joins/
• http://ai.pydantic.dev/graph/beta/decisions/
• http://ai.pydantic.dev/graph/beta/parallel/
• Monitoring and Performance
• durable agents
• http://ai.pydantic.dev/durable_execution/temporal/
• http://ai.pydantic.dev/durable_execution/dbos/
• http://ai.pydantic.dev/durable_execution/prefect/
• UI event stream
• http://ai.pydantic.dev/ui/ag-ui/
• http://ai.pydantic.dev/ui/vercel-ai/
• Agent2Agent
• http://ai.pydantic.dev/cli/
• in the examples
• http://ai.pydantic.dev/examples/pydantic-model/
• http://ai.pydantic.dev/examples/weather-agent/
• http://ai.pydantic.dev/examples/chat-app/
• here
• http://ai.pydantic.dev/examples/sql-gen/
• http://ai.pydantic.dev/examples/data-analyst/
• http://ai.pydantic.dev/examples/rag/
• http://ai.pydantic.dev/examples/stream-markdown/
• http://ai.pydantic.dev/examples/stream-whales/
• http://ai.pydantic.dev/examples/flight-booking/
• http://ai.pydantic.dev/examples/question-graph/
• http://ai.pydantic.dev/examples/slack-lead-qualifier/
• http://ai.pydantic.dev/examples/ag-ui/
• http://ai.pydantic.dev/api/ag_ui/
• API Reference
• http://ai.pydantic.dev/api/builtin_tools/
• http://ai.pydantic.dev/api/capabilities/
• http://ai.pydantic.dev/api/common_tools/
• http://ai.pydantic.dev/api/concurrency/
• http://ai.pydantic.dev/api/direct/
• http://ai.pydantic.dev/api/durable_exec/
• http://ai.pydantic.dev/api/embeddings/
• http://ai.pydantic.dev/api/exceptions/
• http://ai.pydantic.dev/api/ext/
• http://ai.pydantic.dev/api/format_prompt/
• http://ai.pydantic.dev/api/mcp/
• http://ai.pydantic.dev/api/messages/
• Anthropic's Claude Sonnet 4.6
• http://ai.pydantic.dev/api/models/base/
• http://ai.pydantic.dev/api/models/bedrock/
• http://ai.pydantic.dev/api/models/cerebras/
• http://ai.pydantic.dev/api/models/cohere/
• http://ai.pydantic.dev/api/models/fallback/
• http://ai.pydantic.dev/api/models/function/
• http://ai.pydantic.dev/api/models/google/
• http://ai.pydantic.dev/api/models/xai/
• http://ai.pydantic.dev/api/models/groq/
• http://ai.pydantic.dev/api/models/huggingface/
• http://ai.pydantic.dev/api/models/instrumented/
• http://ai.pydantic.dev/api/models/mcp-sampling/
• http://ai.pydantic.dev/api/models/mistral/
• OpenAI's GPT-5 model
• http://ai.pydantic.dev/api/models/openrouter/
• http://ai.pydantic.dev/api/models/outlines/
• http://ai.pydantic.dev/api/models/test/
• http://ai.pydantic.dev/api/models/wrapper/
• http://ai.pydantic.dev/api/output/
• http://ai.pydantic.dev/api/profiles/
• http://ai.pydantic.dev/api/providers/
• http://ai.pydantic.dev/api/result/
• http://ai.pydantic.dev/api/retries/
• http://ai.pydantic.dev/api/run/
• http://ai.pydantic.dev/api/settings/
• http://ai.pydantic.dev/api/tools/
• http://ai.pydantic.dev/api/toolsets/
• http://ai.pydantic.dev/api/ui/ag_ui/
• http://ai.pydantic.dev/api/ui/base/
• http://ai.pydantic.dev/api/ui/vercel_ai/
• http://ai.pydantic.dev/api/usage/
• http://ai.pydantic.dev/api/pydantic_evals/dataset/
• http://ai.pydantic.dev/api/pydantic_evals/evaluators/
• http://ai.pydantic.dev/api/pydantic_evals/lifecycle/
• http://ai.pydantic.dev/api/pydantic_evals/online/
• http://ai.pydantic.dev/api/pydantic_evals/reporting/
• http://ai.pydantic.dev/api/pydantic_evals/otel/
• http://ai.pydantic.dev/api/pydantic_evals/generation/
• http://ai.pydantic.dev/api/pydantic_graph/graph/
• http://ai.pydantic.dev/api/pydantic_graph/nodes/
• http://ai.pydantic.dev/api/pydantic_graph/persistence/
• http://ai.pydantic.dev/api/pydantic_graph/mermaid/
• http://ai.pydantic.dev/api/pydantic_graph/exceptions/
• http://ai.pydantic.dev/api/pydantic_graph/beta/
• http://ai.pydantic.dev/api/pydantic_graph/beta_graph/
• http://ai.pydantic.dev/api/pydantic_graph/beta_graph_builder/
• http://ai.pydantic.dev/api/pydantic_graph/beta_step/
• http://ai.pydantic.dev/api/pydantic_graph/beta_join/
• http://ai.pydantic.dev/api/pydantic_graph/beta_decision/
• http://ai.pydantic.dev/api/pydantic_graph/beta_node/
• http://ai.pydantic.dev/api/fasta2a/
• http://ai.pydantic.dev/contributing/
• http://ai.pydantic.dev/changelog/
• http://ai.pydantic.dev/version-policy/
• custom model
• use that too
• type-safe
• web search
• thinking
• require approval
• stream
• With Pydantic AI Gateway
• Directly to Provider API
• Learn about Gateway
• http://ai.pydantic.dev/#__code_0_annotation_1
• http://ai.pydantic.dev/#__code_0_annotation_2
• http://ai.pydantic.dev/#__code_0_annotation_3
• http://ai.pydantic.dev/#__code_1_annotation_1
• http://ai.pydantic.dev/#__code_1_annotation_2
• http://ai.pydantic.dev/#__code_1_annotation_3
• instructions
• Run the agent
• With Pydantic AI Gateway
• Directly to Provider API
• With Pydantic AI Gateway
• Directly to Provider API
• http://ai.pydantic.dev/#__code_4_annotation_3
• http://ai.pydantic.dev/#__code_4_annotation_12
• http://ai.pydantic.dev/#__code_4_annotation_13
• http://ai.pydantic.dev/#__code_4_annotation_1
• http://ai.pydantic.dev/#__code_4_annotation_2
• http://ai.pydantic.dev/#__code_4_annotation_9
• http://ai.pydantic.dev/#__code_4_annotation_4
• http://ai.pydantic.dev/#__code_4_annotation_5
• http://ai.pydantic.dev/#__code_4_annotation_6
• http://ai.pydantic.dev/#__code_4_annotation_7
• http://ai.pydantic.dev/#__code_4_annotation_11
• http://ai.pydantic.dev/#__code_4_annotation_8
• http://ai.pydantic.dev/#__code_4_annotation_10
• http://ai.pydantic.dev/#__code_5_annotation_3
• http://ai.pydantic.dev/#__code_5_annotation_12
• http://ai.pydantic.dev/#__code_5_annotation_13
• http://ai.pydantic.dev/#__code_5_annotation_1
• http://ai.pydantic.dev/#__code_5_annotation_2
• http://ai.pydantic.dev/#__code_5_annotation_9
• http://ai.pydantic.dev/#__code_5_annotation_4
• http://ai.pydantic.dev/#__code_5_annotation_5
• http://ai.pydantic.dev/#__code_5_annotation_6
• http://ai.pydantic.dev/#__code_5_annotation_7
• http://ai.pydantic.dev/#__code_5_annotation_11
• http://ai.pydantic.dev/#__code_5_annotation_8
• http://ai.pydantic.dev/#__code_5_annotation_10
• http://ai.pydantic.dev/api/agent/#pydantic_ai.agent.Agent.__init__
• http://ai.pydantic.dev/api/agent/#pydantic_ai.agent.Agent.instructions
• http://ai.pydantic.dev/api/tools/#pydantic_ai.tools.RunContext
• extracted
• reflection
• set up Logfire
• With Pydantic AI Gateway
• Directly to Provider API
• http://ai.pydantic.dev/#__code_6_annotation_1
• http://ai.pydantic.dev/#__code_6_annotation_2
• http://ai.pydantic.dev/#__code_6_annotation_3
• http://ai.pydantic.dev/#__code_7_annotation_1
• http://ai.pydantic.dev/#__code_7_annotation_2
• http://ai.pydantic.dev/#__code_7_annotation_3
• https://ai.pydantic.dev/llms.txt
• https://ai.pydantic.dev/llms-full.txt

• https://github.com/pydantic/pydantic-ai
• https://github.com/pydantic/pydantic-ai/actions/workflows/ci.yml?query=branch%3Amain
• https://coverage-badge.samuelcolvin.workers.dev/redirect/pydantic/pydantic-ai
• https://pypi.python.org/pypi/pydantic-ai
• https://github.com/pydantic/pydantic-ai/blob/main/LICENSE
• Slack
• Pydantic
• Pydantic Logfire
• Pydantic Validation
• https://docs.python.org/3/library/sqlite3.html#module-sqlite3
• https://logfire.pydantic.dev/docs/integrations/databases/sqlite3/
• View in Logfire
• llms.txt
• here
• https://github.com/pydantic/pydantic-ai/issues
• https://bsky.app/profile/pydantic.dev
• https://x.com/pydantic
• https://www.linkedin.com/company/pydantic

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