Features in v1.1.0

• Add support for durable execution with Prefect by @desertaxle in #3074, #3156

Selected Features since v1.0.0

• Support image generation and output with Google and OpenAI by @DouweM in #2970
• Add Pydantic AI Gateway provider by @Kludex in #2816, #2863
• Add support for previous_response_id from OpenAI Responses API by @GDaamn in #2756
• Add support for durable execution with DBOS by @qianl15 in #2638
• Built-in tool call streaming from OpenAI, Google, Anthropic by @DouweM in #2877
• Support Anthropic built-in memory tool by @DouweM in #3042
• Support text, JSON, XML and YAML DocumentUrl and BinaryContent on OpenAI by @pulphix in #2851
• Added MCP metadata and annotations to ToolDefinition.metadata for use in filtering by @ChuckJonas in #2880
• Let agent name be overridden contextually by @MinuraPunchihewa in #3094
• Support contextually overriding agent instructions by @mwildehahn in #2926
• Tools can now return AG-UI events separate from result sent to model by @DouweM in #2922
• Add AgentRunResult.response convenience method to get latest model response by @DouweM in #2970
• Add ModelResponse.text, thinking, files, images, tool_calls, and builtin_tool_calls convenience methods by @DouweM in #2970
• Add Agent.run_stream_events() convenience method wrapping run(event_stream_handler=...) by @DouweM in #3084

Other Changes in v1.1.0

• Record instructions on the agent run span even when they are dynamic by @dmontagu in #3131
• Add description arg to tool function decorators by @zhcn000000 in #3153
• fix(gateway): update base_url by @Kludex in #3164
• Document OpenAI-compatible provider prefixes by @DouweM in #3169
• Explicitly request image response modality from Google API when model supports it by @DouweM in #3172

New Contributors

• @zhcn000000 made their first contribution in #3153
• @certainly-param made their first contribution in #3133

Full Changelog: v1.0.18...v1.1.0

What's Changed

• Add render method to EvaluationReport class by @dmontagu in #3116
• Omit previous_response_id when unset instead of sending null to OpenAI Responses by @DouweM in #3134
• Include all API docs in llms.txt by @DouweM in #3152
• Add anyio and httpcore to Temporal passthrough modules by @slumbi in #3147
• Add Nebius AI Studio provider support by @antoncp in #3124
• Add new ToolCallPart.id field for OpenAI Responses by @DouweM in #3151

New Contributors

• @slumbi made their first contribution in #3147
• @antoncp made their first contribution in #3124
• @desertaxle made their first contribution in #3074

Full Changelog: v1.0.17...v1.0.18

What's Changed

• Let builtin_tools be specified at agent run time by @safina57 in #3009
• Make BinaryImage work with inline-snapshot by @alexmojaki in #3125
• Document InstrumentationSettings(version=3) by @alexmojaki in #3127

Full Changelog: v1.0.16...v1.0.17

What's Changed

• Add support for datetime.time/timedelta to format_as_xml by @nurikk in #3087
• Ensure graph persistence snapshots are not mutated when run is resumed by @lienminhquang in #3077
• Use Sequence[ModelMessage] instead of list for method arg types by @moritzwilksch in #3040
• Let agent name be overridden contextually by @MinuraPunchihewa in #3094
• Respect FileUrl.force_download flag in OpenAI Chat and Responses models by @nicolas-chaulet in #3106
• Ensure FileUrl and BinaryContent without identifier are valid by @DouweM in #3110
• Don't include ToolResultPart for external tool call when streaming by @DouweM in #3112
• Fix token usage for anthropic streaming by @alexmojaki in #3111 and #3115
• plain text docs, fix redirects and add logfire by @samuelcolvin in #3096

New Contributors

• @nurikk made their first contribution in #3087
• @lienminhquang made their first contribution in #3077
• @MinuraPunchihewa made their first contribution in #3094
• @nicolas-chaulet made their first contribution in #3106

Full Changelog: v1.0.15...v1.0.16

What's Changed

• Support image generation and output with Google and OpenAI by @DouweM in #2970
• Add AgentRunResult.response convenience method to get latest model response by @DouweM in #2970
• Add ModelResponse.text, thinking, files, images, tool_calls, and builtin_tool_calls convenience methods by @DouweM in #2970
• Add Agent.run_stream_events() convenience method wrapping run(event_stream_handler=...) by @DouweM in #3084
• Add content (e.g. files) returned by tool to FunctionToolResultEvent by @DouweM in #3082
• Set MCPServer id and tool_prefix in load_mcp_servers by @DouweM in #3052
• Add latest gemini 2.5 flash(-lite) model names and aliases by @moritzwilksch in #3060
• Support enums in format_as_xml by @DouweM in #3064
• Fix dataset serialization when inputs have discriminators with defaults by @DouweM in #3079
• Fix parallel tool call limit enforcement by @tradeqvest in #2978

Full Changelog: v1.0.14...v1.0.15

What's Changed

• Remove leftover debug print statement by @KostyaGukish in #3070
• Fix duplicate output tool return part when concatenating first run messages with follow-up new_messages by @DouweM in #3075

New Contributors

• @KostyaGukish made their first contribution in #3070

Full Changelog: v1.0.13...v1.0.14

What's Changed

• feat: Otel instrumentation version 3 by @bitnahian in #3021
• Don't send strict to HuggingFace API as it's not supported by their types and at least some models by @DouweM in #3062
• Correctly merge Model.settings with model_settings in direct mode by @moritzwilksch in #2980
• Expose server_info in MCPServer by @Whadup in #3055
• Support contextually overriding agent instructions by @mwildehahn in #2926
• Update evals attributes by @dmontagu in #2924

New Contributors

• @Whadup made their first contribution in #3055

Full Changelog: v1.0.12...v1.0.13

What's Changed

• Support Anthropic built-in memory tool by @DouweM in #3042
• Support text, JSON, XML and YAML DocumentUrl and BinaryContent on OpenAI by @pulphix in #2851
• Prefer structuredContent MCP tool result when present by @shaheerzaman in #2854
• Expose .messages, .toolsets types in top-level pydantic_ai to aid IDE auto-import by @moritzwilksch in #2957
• Add cost metric to the pydantic-evals output by @dmontagu in #2984
• Add retry args to pydantic_evals.Dataset.evaluate_sync by @m7mdhka in #3022
• Change type of common_tools to work with agent with any deps type by @lukekh in #3037
• Don't error when Gemini returns more than one candidate response by @DouweM in #3043
• Handle Ollama responses without finish_reason and document Ollama Cloud by @DouweM in #3045
• Add custom Vertex AI Model Garden example by @stefannae in #2868
• Fix StructuredDict with nested JSON schemas using $ref by @ChiaXinLiang in #2570

New Contributors

• @m7mdhka made their first contribution in #3022
• @lukekh made their first contribution in #3037
• @pulphix made their first contribution in #2851
• @stefannae made their first contribution in #2868
• @ChiaXinLiang made their first contribution in #2570

Full Changelog: v1.0.11...v1.0.12

What's Changed

• Support OpenAI image detail on ImageUrl and BinaryContent via vendor_metadata by @moritzwilksch in #2987
• Support callable classes as history processors by @bitnahian in #2988
• Add claude-sonnet-4-5 to known model names by @DouweM in #3033
• Add operation.cost metric to instrumented models by @alexmojaki in #3013
• Fix streaming gpt-oss using Ollama by @DouweM in #3035
• Raise error when using Anthropic thinking with output tools by @DouweM in #3025
• Make OutputObjectDefinition public on pydantic_ai.output by @moritzwilksch in #2991
• Update pyproject.toml to be PEP639 compliant by @Kludex in #3001
• Bump temporalio to 1.18.0 by @DouweM in #3027
• Bump genai-prices to 0.0.28 by @DouweM in #3030
• Document that Gemini requires native or prompted output mode for structured output streaming by @DouweM in #3032
• Update Ollama docs instructions by @slkoo-cc in #2993
• Update docs and tests for DBOS v2.0 by @qianl15 in #3004

New Contributors

• @slkoo-cc made their first contribution in #2993

Full Changelog: v1.0.10...v1.0.11

What's Changed

• Fix OTel for built-in tools returning a list (e.g. Anthropic web search) by @DouweM in #2959
• Drop assertion that Google streaming chunk has candidates by @DouweM in #2960
• Retry model request that produced an empty response by @DouweM in #2961
• Clarify Agent(retries=...) description by @DouweM in #2963
• Stop redundantly encoding binary data as base64 when sending to Google genai SDK by @DouweM in #2962
• Use model class names as tags in format_as_xml and add option to include field titles and descriptions as attributes by @giacbrd in #2313

Full Changelog: v1.0.9...v1.0.10