CCDV-F Model Selection and Cost Management Practice Question
Which THREE criteria are most important when deciding whether to upgrade from Claude 3 Haiku to Claude 3.5 Sonnet for a production application?
⚠ Common exam trap
Test-takers often evaluate model upgrades solely on intelligence gains while ignoring critical operational constraints like latency and budget.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The complexity of the reasoning or creative task required.
Upgrading models involves a trade-off between performance and cost. Developers must evaluate if the task requires higher-level reasoning (where Haiku might fail), if the application can tolerate the slightly higher latency of Sonnet, and if the budget can accommodate the significant price increase. These three factors ensure that the model choice aligns with both technical and business constraints.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The complexity of the reasoning or creative task required.
Why this is correct
Claude 3.5 Sonnet has significantly higher intelligence and reasoning capabilities than Haiku. If your application involves complex coding, nuanced translation, or multi-step logical deduction, the upgrade is often necessary because Haiku may produce lower-quality or inaccurate results that could negatively impact the utility of the tool.
- ✓
The acceptable latency for the end-user experience.
Why this is correct
Haiku is the fastest model in the Claude 3 family. While 3.5 Sonnet is very fast for its class, it is still slower than Haiku. Developers must determine if the extra intelligence is worth the additional milliseconds of waiting time, especially in real-time chat or autocomplete applications.
- ✗
The availability of the 'stream' parameter.
Why it's wrong here
The 'stream' parameter is a feature of the Anthropic API itself and is available for all models, including Haiku, Sonnet, and Opus. Since this feature is consistent across the entire model family, it is not a differentiating factor when choosing between specific models for an upgrade.
- ✓
The budget allocated for API token consumption.
Why this is correct
Claude 3.5 Sonnet is more expensive per token than Claude 3 Haiku. For high-volume applications, this price difference can lead to thousands of dollars in additional monthly costs. A careful cost-benefit analysis is required to ensure that the performance gains of Sonnet justify the increased operational expenditure.
- ✗
The total number of API keys generated for the project.
Why it's wrong here
The number of API keys is an account management detail and does not relate to the performance, cost, or capabilities of the models themselves. You can use the same API key to access any model you are cleared for, so this is not a technical criterion for model selection.
About these practice questions
One of 257 original CCDV-F practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Anthropic exam blueprint
This CCDV-F practice question is part of Courseiva's free Anthropic certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCDV-F exam.