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OpenAI model cost #2287

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Merged
merged 5 commits into from
Sep 17, 2025
Merged

OpenAI model cost #2287

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ce8f447
add model name to the TokenUsage object
JonasElburgUVA Mar 4, 2025
5cc9d12
retain model when adding TokenUsage objects together
JonasElburgUVA Mar 4, 2025
c954f20
Add model ID's to other parsers and update tests to expect a model va…
JonasElburgUVA Mar 7, 2025
600d8ce
Fallback empty string as model ID if the llm results do not come with…
JonasElburgUVA Mar 7, 2025
ff59738
Apply code formatting fixes
anistark Sep 17, 2025
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24 changes: 19 additions & 5 deletions src/ragas/cost.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ def __add__(self, y: "TokenUsage") -> "TokenUsage":
return TokenUsage(
input_tokens=self.input_tokens + y.input_tokens,
output_tokens=self.output_tokens + y.output_tokens,
model=self.model,
)
else:
raise ValueError("Cannot add TokenUsage objects with different models")
Expand Down Expand Up @@ -67,8 +68,11 @@ def get_token_usage_for_openai(
return TokenUsage(input_tokens=0, output_tokens=0)
output_tokens = get_from_dict(llm_output, "token_usage.completion_tokens", 0)
input_tokens = get_from_dict(llm_output, "token_usage.prompt_tokens", 0)
model = get_from_dict(llm_output, "model_name", "")

return TokenUsage(input_tokens=input_tokens, output_tokens=output_tokens)
return TokenUsage(
input_tokens=input_tokens, output_tokens=output_tokens, model=model
)


def get_token_usage_for_anthropic(
Expand All @@ -92,10 +96,15 @@ def get_token_usage_for_anthropic(
"usage.output_tokens",
0,
),
model=get_from_dict(
g.message.response_metadata, "model", ""
),
)
)

return sum(token_usages, TokenUsage(input_tokens=0, output_tokens=0))
model = next((usage.model for usage in token_usages if usage.model), "")
return sum(
token_usages, TokenUsage(input_tokens=0, output_tokens=0, model=model)
)
else:
return TokenUsage(input_tokens=0, output_tokens=0)

Expand All @@ -120,10 +129,15 @@ def get_token_usage_for_bedrock(
"usage.completion_tokens",
0,
),
model=get_from_dict(
g.message.response_metadata, "model_id", ""
),
)
)

return sum(token_usages, TokenUsage(input_tokens=0, output_tokens=0))
model = next((usage.model for usage in token_usages if usage.model), "")
return sum(
token_usages, TokenUsage(input_tokens=0, output_tokens=0, model=model)
)
return TokenUsage(input_tokens=0, output_tokens=0)


Expand Down
20 changes: 15 additions & 5 deletions tests/unit/test_cost.py
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Original file line number Diff line number Diff line change
Expand Up @@ -133,27 +133,37 @@ def test_token_usage_cost():
def test_parse_llm_results():
# openai
token_usage = get_token_usage_for_openai(openai_llm_result)
assert token_usage == TokenUsage(input_tokens=10, output_tokens=10)
assert token_usage == TokenUsage(input_tokens=10, output_tokens=10, model="gpt-4o")

# anthropic
token_usage = get_token_usage_for_anthropic(anthropic_llm_result)
assert token_usage == TokenUsage(input_tokens=9, output_tokens=12)
assert token_usage == TokenUsage(
input_tokens=9, output_tokens=12, model="claude-3-opus-20240229"
)

# Bedrock LLaMa
token_usage = get_token_usage_for_bedrock(bedrock_llama_result)
assert token_usage == TokenUsage(input_tokens=10, output_tokens=10)
assert token_usage == TokenUsage(
input_tokens=10, output_tokens=10, model="us.meta.llama3-1-70b-instruct-v1:0"
)

# Bedrock Claude
token_usage = get_token_usage_for_bedrock(bedrock_claude_result)
assert token_usage == TokenUsage(input_tokens=10, output_tokens=10)
assert token_usage == TokenUsage(
input_tokens=10,
output_tokens=10,
model="us.anthropic.claude-3-5-sonnet-20240620-v1:0",
)


def test_cost_callback_handler():
cost_cb = CostCallbackHandler(token_usage_parser=get_token_usage_for_openai)
cost_cb.on_llm_end(openai_llm_result)

# cost
assert cost_cb.total_tokens() == TokenUsage(input_tokens=10, output_tokens=10)
assert cost_cb.total_tokens() == TokenUsage(
input_tokens=10, output_tokens=10, model="gpt-4o"
)

assert cost_cb.total_cost(0.1) == 2.0
assert (
Expand Down
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