Support multimodal inputs (#971)

Co-authored-by: David Montague <35119617+dmontagu@users.noreply.github.com>

.pre-commit-config.yaml

@@ -45,5 +45,6 @@ repos:
     rev: v2.3.0
     hooks:
     - id: codespell
+      args: ['--skip', 'tests/models/cassettes/*']
       additional_dependencies:
       - tomli

docs/input.md

@@ -0,0 +1,55 @@
+# Image and Audio Input
+
+Some LLMs are now capable of understanding both audio and image content.
+
+## Image Input
+
+!!! info
+    Some models do not support image input. Please check the model's documentation to confirm whether it supports image input.
+
+If you have a direct URL for the image, you can use [`ImageUrl`][pydantic_ai.ImageUrl]:
+
+```py {title="main.py" test="skip" lint="skip"}
+from pydantic_ai import Agent, ImageUrl
+
+image_url = ImageUrl(url='https://iili.io/3Hs4FMg.png')
+
+agent = Agent(model='openai:gpt-4o')
+result = agent.run_sync(
+    [
+        'What company is this logo from?',
+        ImageUrl(url='https://iili.io/3Hs4FMg.png'),
+    ]
+)
+print(result.data)
+#> This is the logo for Pydantic, a data validation and settings management library in Python.
+```
+
+If you have the image locally, you can also use [`BinaryContent`][pydantic_ai.BinaryContent]:
+
+```py {title="main.py" test="skip" lint="skip"}
+import httpx
+
+from pydantic_ai import Agent, BinaryContent
+
+image_response = httpx.get('https://iili.io/3Hs4FMg.png')  # Pydantic logo
+
+agent = Agent(model='openai:gpt-4o')
+result = agent.run_sync(
+    [
+        'What company is this logo from?',
+        BinaryContent(data=image_response.content, media_type='image/png'),  # (1)!
+    ]
+)
+print(result.data)
+#> This is the logo for Pydantic, a data validation and settings management library in Python.
+```
+
+1. To ensure the example is runnable we download this image from the web, but you can also use `Path().read_bytes()` to read a local file's contents.
+
+## Audio Input
+
+!!! info
+    Some models do not support audio input. Please check the model's documentation to confirm whether it supports audio input.
+
+You can provide audio input using either [`AudioUrl`][pydantic_ai.AudioUrl] or [`BinaryContent`][pydantic_ai.BinaryContent]. The process is analogous to the examples above.

examples/pydantic_ai_examples/chat_app.py

@@ -89,6 +89,7 @@ def to_chat_message(m: ModelMessage) -> ChatMessage:
     first_part = m.parts[0]
     if isinstance(m, ModelRequest):
         if isinstance(first_part, UserPromptPart):
+            assert isinstance(first_part.content, str)
             return {
                 'role': 'user',
                 'timestamp': first_part.timestamp.isoformat(),

mkdocs.yml

@@ -16,52 +16,53 @@ nav:
   - contributing.md
   - troubleshooting.md
   - Documentation:
-    - agents.md
-    - models.md
-    - dependencies.md
-    - tools.md
-    - results.md
-    - message-history.md
-    - testing-evals.md
-    - logfire.md
-    - multi-agent-applications.md
-    - graph.md
+      - agents.md
+      - models.md
+      - dependencies.md
+      - tools.md
+      - results.md
+      - message-history.md
+      - testing-evals.md
+      - logfire.md
+      - multi-agent-applications.md
+      - graph.md
+      - input.md
   - Examples:
-    - examples/index.md
-    - examples/pydantic-model.md
-    - examples/weather-agent.md
-    - examples/bank-support.md
-    - examples/sql-gen.md
-    - examples/flight-booking.md
-    - examples/rag.md
-    - examples/stream-markdown.md
-    - examples/stream-whales.md
-    - examples/chat-app.md
-    - examples/question-graph.md
+      - examples/index.md
+      - examples/pydantic-model.md
+      - examples/weather-agent.md
+      - examples/bank-support.md
+      - examples/sql-gen.md
+      - examples/flight-booking.md
+      - examples/rag.md
+      - examples/stream-markdown.md
+      - examples/stream-whales.md
+      - examples/chat-app.md
+      - examples/question-graph.md
   - API Reference:
-    - api/agent.md
-    - api/tools.md
-    - api/result.md
-    - api/messages.md
-    - api/exceptions.md
-    - api/settings.md
-    - api/usage.md
-    - api/format_as_xml.md
-    - api/models/base.md
-    - api/models/openai.md
-    - api/models/anthropic.md
-    - api/models/cohere.md
-    - api/models/gemini.md
-    - api/models/vertexai.md
-    - api/models/groq.md
-    - api/models/mistral.md
-    - api/models/test.md
-    - api/models/function.md
-    - api/pydantic_graph/graph.md
-    - api/pydantic_graph/nodes.md
-    - api/pydantic_graph/state.md
-    - api/pydantic_graph/mermaid.md
-    - api/pydantic_graph/exceptions.md
+      - api/agent.md
+      - api/tools.md
+      - api/result.md
+      - api/messages.md
+      - api/exceptions.md
+      - api/settings.md
+      - api/usage.md
+      - api/format_as_xml.md
+      - api/models/base.md
+      - api/models/openai.md
+      - api/models/anthropic.md
+      - api/models/cohere.md
+      - api/models/gemini.md
+      - api/models/vertexai.md
+      - api/models/groq.md
+      - api/models/mistral.md
+      - api/models/test.md
+      - api/models/function.md
+      - api/pydantic_graph/graph.md
+      - api/pydantic_graph/nodes.md
+      - api/pydantic_graph/state.md
+      - api/pydantic_graph/mermaid.md
+      - api/pydantic_graph/exceptions.md
 
 extra:
   # hide the "Made with Material for MkDocs" message
@@ -100,12 +101,12 @@ theme:
     - content.code.copy
     - content.code.select
     - navigation.path
-#    - navigation.expand
+    #    - navigation.expand
     - navigation.indexes
     - navigation.sections
     - navigation.tracking
     - toc.follow
-#    - navigation.tabs  # don't use navbar tabs
+  #    - navigation.tabs  # don't use navbar tabs
   logo: "img/logo-white.svg"
   favicon: "favicon.ico"
 
@@ -151,7 +152,7 @@ markdown_extensions:
       emoji_generator: !!python/name:material.extensions.emoji.to_svg
       options:
         custom_icons:
-            - docs/.overrides/.icons
+          - docs/.overrides/.icons
   - pymdownx.tabbed:
       alternate_style: true
   - pymdownx.tasklist:
@@ -190,6 +191,6 @@ plugins:
             # waiting for https://github.com/encode/httpx/discussions/3091#discussioncomment-11205594
 
 hooks:
-- 'docs/.hooks/main.py'
-- 'docs/.hooks/build_llms_txt.py'
-- 'docs/.hooks/algolia.py'
+  - "docs/.hooks/main.py"
+  - "docs/.hooks/build_llms_txt.py"
+  - "docs/.hooks/algolia.py"

pydantic_ai_slim/pydantic_ai/__init__.py

@@ -2,22 +2,30 @@
 
 from .agent import Agent, EndStrategy, HandleResponseNode, ModelRequestNode, UserPromptNode, capture_run_messages
 from .exceptions import AgentRunError, ModelRetry, UnexpectedModelBehavior, UsageLimitExceeded, UserError
+from .messages import AudioUrl, BinaryContent, ImageUrl
 from .tools import RunContext, Tool
 
 __all__ = (
+    '__version__',
+    # agent
     'Agent',
     'EndStrategy',
     'HandleResponseNode',
     'ModelRequestNode',
     'UserPromptNode',
     'capture_run_messages',
-    'RunContext',
-    'Tool',
+    # exceptions
     'AgentRunError',
     'ModelRetry',
     'UnexpectedModelBehavior',
     'UsageLimitExceeded',
     'UserError',
-    '__version__',
+    # messages
+    'ImageUrl',
+    'AudioUrl',
+    'BinaryContent',
+    # tools
+    'Tool',
+    'RunContext',
 )
 __version__ = version('pydantic_ai_slim')

pydantic_ai_slim/pydantic_ai/_agent_graph.py

@@ -3,7 +3,7 @@
 import asyncio
 import dataclasses
 from abc import ABC
-from collections.abc import AsyncIterator, Iterator
+from collections.abc import AsyncIterator, Iterator, Sequence
 from contextlib import asynccontextmanager, contextmanager
 from contextvars import ContextVar
 from dataclasses import field
@@ -89,7 +89,7 @@ class GraphAgentDeps(Generic[DepsT, ResultDataT]):
 
     user_deps: DepsT
 
-    prompt: str
+    prompt: str | Sequence[_messages.UserContent]
     new_message_index: int
 
     model: models.Model
@@ -109,7 +109,7 @@ class GraphAgentDeps(Generic[DepsT, ResultDataT]):
 
 @dataclasses.dataclass
 class UserPromptNode(BaseNode[GraphAgentState, GraphAgentDeps[DepsT, Any], NodeRunEndT], ABC):
-    user_prompt: str
+    user_prompt: str | Sequence[_messages.UserContent]
 
     system_prompts: tuple[str, ...]
     system_prompt_functions: list[_system_prompt.SystemPromptRunner[DepsT]]
@@ -135,7 +135,10 @@ async def _get_first_message(
         return next_message
 
     async def _prepare_messages(
-        self, user_prompt: str, message_history: list[_messages.ModelMessage] | None, run_context: RunContext[DepsT]
+        self,
+        user_prompt: str | Sequence[_messages.UserContent],
+        message_history: list[_messages.ModelMessage] | None,
+        run_context: RunContext[DepsT],
     ) -> tuple[list[_messages.ModelMessage], _messages.ModelRequest]:
         try:
             ctx_messages = get_captured_run_messages()

pydantic_ai_slim/pydantic_ai/agent.py

@@ -220,7 +220,7 @@ def __init__(
     @overload
     async def run(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: None = None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -235,7 +235,7 @@ async def run(
     @overload
     async def run(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT],
         message_history: list[_messages.ModelMessage] | None = None,
@@ -249,7 +249,7 @@ async def run(
 
     async def run(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT] | None = None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -313,7 +313,7 @@ async def main():
     @contextmanager
     def iter(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT] | None = None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -466,7 +466,7 @@ async def main():
     @overload
     def run_sync(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         message_history: list[_messages.ModelMessage] | None = None,
         model: models.Model | models.KnownModelName | None = None,
@@ -480,7 +480,7 @@ def run_sync(
     @overload
     def run_sync(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT] | None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -494,7 +494,7 @@ def run_sync(
 
     def run_sync(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT] | None = None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -555,7 +555,7 @@ def run_sync(
     @overload
     def run_stream(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: None = None,
         message_history: list[_messages.ModelMessage] | None = None,
@@ -570,7 +570,7 @@ def run_stream(
     @overload
     def run_stream(
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT],
         message_history: list[_messages.ModelMessage] | None = None,
@@ -585,7 +585,7 @@ def run_stream(
     @asynccontextmanager
     async def run_stream(  # noqa C901
         self,
-        user_prompt: str,
+        user_prompt: str | Sequence[_messages.UserContent],
         *,
         result_type: type[RunResultDataT] | None = None,
         message_history: list[_messages.ModelMessage] | None = None,