chat-langchain-rephrase
Prompt used for combining chat history and a latest question into a standalone question that contains all required context for answering.
Prompt Text
Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question.
Chat History:
{chat_history}
Follow Up Input: {input}
Standalone Question:Evaluation Results
1/28/2026
Overall Score
2.63/5
Average across all 3 models
Best Performing Model
Low Confidence
google:gemini-2.5-flash-lite
2.86/5
google:gemini-2.5-flash-lite
#1 Ranked
2.86
/5.00
adh
2.2
cla
4.4
com
2.0
In
225
Out
3,040
Cost
$0.0012
openai:gpt-5-mini
#2 Ranked
2.63
/5.00
adh
2.1
cla
4.0
com
1.8
In
225
Out
2,827
Cost
$0.0057
anthropic:claude-3-5-haiku
#3 Ranked
2.39
/5.00
adh
1.7
cla
4.2
com
1.3
In
265
Out
498
Cost
$0.0022
Test Case: