[Solved] Find the bug in this token cost calculation code: response = {'usage': {'prompt_tokens': 100, 'completion_tokens': 50}} cost_per_token = 0.... | Agentic AI

Agentic AI - Agent Observability

Find the bug in this token cost calculation code:

response = {'usage': {'prompt_tokens': 100, 'completion_tokens': 50}}
cost_per_token = 0.0001
total_tokens = response['usage']['prompt_tokens'] + response['usage']['completion_tokens']
cost = total_tokens * cost_per_token
print(f"Cost: ${cost}")

Atotal_tokens calculation misses 'total_tokens' key

Bcost_per_token should be multiplied by 100

CNo bug, calculation is correct

Dcost should be divided by total_tokens

Step-by-Step Solution

Solution:

Step 1: Verify token sum
Sum of prompt and completion tokens is correct: 100 + 50 = 150.
Step 2: Check cost calculation
Cost is tokens times cost per token, which is correct.
Final Answer:
No bug, calculation is correct -> Option C
Quick Check:
Correct formula = No bug [OK]

Quick Trick: Sum tokens then multiply by cost per token [OK]

Common Mistakes:

Thinking total_tokens key is mandatory
Incorrect multiplication or division
Changing cost_per_token unnecessarily

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Find the bug in this token cost calculation code:

Step 1: Verify token sum

Step 2: Check cost calculation

Final Answer:

Quick Check:

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