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Fix OpenAI input image sanitization #384

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Fix OpenAI input image sanitization #384

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6 changes: 6 additions & 0 deletions posthog/ai/sanitization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,12 @@ def sanitize_openai_image(item: Any) -> Any:
if not isinstance(item, dict):
return item

if item.get("type") == "input_image" and isinstance(item.get("image_url"), str):
return {
**item,
"image_url": redact_base64_data_url(item["image_url"]),
}

if (
item.get("type") == "image_url"
and isinstance(item.get("image_url"), dict)
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19 changes: 19 additions & 0 deletions posthog/test/ai/test_sanitization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,25 @@ def test_sanitize_openai(self):
)
self.assertEqual(result[0]["content"][1]["image_url"]["detail"], "high")

def test_sanitize_openai_input_image(self):
input_data = [
{
"role": "user",
"content": [
{
"type": "input_image",
"image_url": self.sample_base64_image,
}
],
}
]

result = sanitize_openai(input_data)

self.assertEqual(
result[0]["content"][0]["image_url"], REDACTED_IMAGE_PLACEHOLDER
)

def test_sanitize_openai_preserves_regular_urls(self):
input_data = [
{
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