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fix(helpers): restore tiktoken fallback in estimate_prompt_tokens_chain

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yorkhellen 2026-05-01 23:57:15 +08:00 committed by Xubin Ren
parent fd1a5a6267
commit ee364c6ac1
1 changed files with 1 additions and 0 deletions
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nanobot/utils/helpers.py
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@ -431,6 +431,7 @@ def estimate_prompt_tokens_chain(
tokens, source = provider_counter(messages, tools, model)
if isinstance(tokens, (int, float)) and tokens > 0:
return int(tokens), str(source or "provider_counter")
estimated = estimate_prompt_tokens(messages, tools)
if estimated > 0:
return int(estimated), "tiktoken"
return 0, "none"