fix: support multimodal content in Bedrock message formatting

- Add format_text_content override for Bedrock's {"text": ...} format
- Handle pre-formatted list content in _format_messages_for_converse
- Update Bedrock tests to use Claude 3 Haiku for on-demand availability
- Add VCR cassettes for Bedrock multimodal tests

lib/crewai/src/crewai/llms/providers/bedrock/completion.py

@@ -1360,11 +1360,15 @@ class BedrockCompletion(BaseLLM):
                 )
             else:
                 # Convert to Converse API format with proper content structure
-                # Ensure content is not None
-                text_content = content if content else ""
-                converse_messages.append(
-                    {"role": role, "content": [{"text": text_content}]}
-                )
+                if isinstance(content, list):
+                    # Already formatted as multimodal content blocks
+                    converse_messages.append({"role": role, "content": content})
+                else:
+                    # String content - wrap in text block
+                    text_content = content if content else ""
+                    converse_messages.append(
+                        {"role": role, "content": [{"text": text_content}]}
+                    )
 
         # CRITICAL: Handle model-specific conversation requirements
         # Cohere and some other models require conversation to end with user message
@@ -1703,3 +1707,16 @@ class BedrockCompletion(BaseLLM):
             "video/3gpp": "three_gp",
         }
         return format_map.get(content_type)
+
+    def format_text_content(self, text: str) -> dict[str, Any]:
+        """Format text as a Bedrock content block.
+
+        Bedrock uses {"text": "..."} format instead of {"type": "text", "text": "..."}.
+
+        Args:
+            text: The text content to format.
+
+        Returns:
+            A content block in Bedrock's expected format.
+        """
+        return {"text": text}

lib/crewai/tests/cassettes/llms/TestBedrockMultimodalIntegration.test_analyze_pdf.yaml

@@ -0,0 +1,43 @@
+interactions:
+- request:
+    body: '{"messages": [{"role": "user", "content": [{"text": "What type of document
+      is this? Answer in one word."}, {"document": {"name": "document", "format":
+      "pdf", "source": {"bytes": "JVBERi0xLjQKMSAwIG9iaiA8PCAvVHlwZSAvQ2F0YWxvZyAvUGFnZXMgMiAwIFIgPj4gZW5kb2JqCjIgMCBvYmogPDwgL1R5cGUgL1BhZ2VzIC9LaWRzIFszIDAgUl0gL0NvdW50IDEgPj4gZW5kb2JqCjMgMCBvYmogPDwgL1R5cGUgL1BhZ2UgL1BhcmVudCAyIDAgUiAvTWVkaWFCb3ggWzAgMCA2MTIgNzkyXSA+PiBlbmRvYmoKeHJlZgowIDQKMDAwMDAwMDAwMCA2NTUzNSBmCjAwMDAwMDAwMDkgMDAwMDAgbgowMDAwMDAwMDU4IDAwMDAwIG4KMDAwMDAwMDExNSAwMDAwMCBuCnRyYWlsZXIgPDwgL1NpemUgNCAvUm9vdCAxIDAgUiA+PgpzdGFydHhyZWYKMTk2CiUlRU9GCg=="}}}]}],
+      "inferenceConfig": {}}'
+    headers:
+      Content-Length:
+      - '646'
+      Content-Type:
+      - !!binary |
+        YXBwbGljYXRpb24vanNvbg==
+      User-Agent:
+      - X-USER-AGENT-XXX
+      amz-sdk-invocation-id:
+      - AMZ-SDK-INVOCATION-ID-XXX
+      amz-sdk-request:
+      - !!binary |
+        YXR0ZW1wdD0x
+      authorization:
+      - AUTHORIZATION-XXX
+      x-amz-date:
+      - X-AMZ-DATE-XXX
+    method: POST
+    uri: https://bedrock-runtime.us-west-2.amazonaws.com/model/anthropic.claude-3-haiku-20240307-v1%3A0/converse
+  response:
+    body:
+      string: '{"metrics":{"latencyMs":867},"output":{"message":{"content":[{"text":"PDF"}],"role":"assistant"}},"stopReason":"end_turn","usage":{"inputTokens":57,"outputTokens":4,"serverToolUsage":{},"totalTokens":61}}'
+    headers:
+      Connection:
+      - keep-alive
+      Content-Length:
+      - '204'
+      Content-Type:
+      - application/json
+      Date:
+      - Fri, 23 Jan 2026 03:26:35 GMT
+      x-amzn-RequestId:
+      - X-AMZN-REQUESTID-XXX
+    status:
+      code: 200
+      message: OK
+version: 1

lib/crewai/tests/llms/test_multimodal_integration.py

@@ -153,7 +153,7 @@ class TestBedrockMultimodalIntegration:
     @pytest.mark.vcr()
     def test_describe_image(self, test_image_bytes: bytes) -> None:
         """Test Bedrock Claude can describe an image."""
-        llm = LLM(model="bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0")
+        llm = LLM(model="bedrock/anthropic.claude-3-haiku-20240307-v1:0")
         files = {"image": ImageFile(source=test_image_bytes)}
 
         messages = _build_multimodal_message(
@@ -171,7 +171,7 @@ class TestBedrockMultimodalIntegration:
     @pytest.mark.vcr()
     def test_analyze_pdf(self) -> None:
         """Test Bedrock Claude can analyze a PDF."""
-        llm = LLM(model="bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0")
+        llm = LLM(model="bedrock/anthropic.claude-3-haiku-20240307-v1:0")
         files = {"document": PDFFile(source=MINIMAL_PDF)}
 
         messages = _build_multimodal_message(