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Anthropic requires the first message to be a non empty 'user' role #669

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merged 10 commits into from
Aug 23, 2024
Merged

Anthropic requires the first message to be a non empty 'user' role #669

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6489d78
Insert empty 'user' message if needed
keepingitneil Aug 23, 2024
daf9a11
fix bug
keepingitneil Aug 23, 2024
ec3f181
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keepingitneil Aug 23, 2024
937f464
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keepingitneil Aug 23, 2024
0e967a3
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keepingitneil Aug 23, 2024
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keepingitneil Aug 23, 2024
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keepingitneil Aug 23, 2024
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keepingitneil Aug 23, 2024
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keepingitneil Aug 23, 2024
22f85c4
Create violet-meals-crash.md
keepingitneil Aug 23, 2024
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5 changes: 5 additions & 0 deletions .changeset/violet-meals-crash.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"livekit-plugins-anthropic": patch
---

Anthropic requires the first message to be a non empty 'user' role
9 changes: 7 additions & 2 deletions livekit-plugins/livekit-plugins-anthropic/livekit/plugins/anthropic/llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ def chat(

latest_system_message = _latest_system_message(chat_ctx)
anthropic_ctx = _build_anthropic_context(chat_ctx.messages, id(self))
collaped_anthropic_ctx = _collapse_messages(anthropic_ctx)
collaped_anthropic_ctx = _merge_messages(anthropic_ctx)
stream = self._client.messages.create(
max_tokens=opts.get("max_tokens", 1000),
system=latest_system_message,
Expand Down Expand Up @@ -205,7 +205,7 @@ def _latest_system_message(chat_ctx: llm.ChatContext) -> str:
return latest_system_str


def _collapse_messages(
def _merge_messages(
messages: List[anthropic.types.MessageParam],
) -> List[anthropic.types.MessageParam]:
# Anthropic enforces alternating messages
Expand All @@ -223,6 +223,11 @@ def _collapse_messages(

last_message["content"].extend(m["content"])

if len(combined_messages) == 0 or combined_messages[0]["role"] != "user":
combined_messages.insert(
0, {"role": "user", "content": [{"type": "text", "text": "(empty)"}]}
)

return combined_messages


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