If you're building an AI agent for customer support, sales, marketing, internal workflows, or any specific business use case, choosing the right model is your first and most important decision.

Each model has its strengths. Some are better at handling multi-step conversations. Others are faster, more affordable, or more reliable in high-risk environments.

This guide will help you compare top AI models and decide which one fits your use case best.

Our Top Recommended Models

1. Claude 3.5 Sonnet – Empathy + Reliable Structured Replies

• Balances detailed responses with a natural, human-like tone.

• Performs consistently well in multi-turn support workflows.

• Works well with formatted outputs and user-friendly explanations.

Best for: Customer support, internal knowledge bases, and agents that require friendly, thoughtful interactions.

We recommend Claude 3.5 Sonnet over 3.7 for most use cases due to its stability and more predictable outputs.

2. GPT-4 – Best for High-Stakes, Instruction-Following Tasks

• Consistently follows complex instructions with high precision.

• Outperforms GPT-4o in sensitive workflows (e.g. finance, legal).

• Slightly slower and costlier, but still the gold standard for accuracy.

Best for: Regulated industries, compliance-heavy tasks, and workflows where errors are costly.

Our top pick for mission-critical AI agents.

3. GPT-4o (Omni) – Best All-Rounder

• Accepts text, images, and voice inputs.

• Fluent in multiple languages.

• Responds quickly even with high usage.

• Excels in reasoning + empathetic tone, ideal for front-line support.

Best for: teams handling global support, or anyone who wants speed, accuracy, and versatility without overpaying.

Note: The output generated by this model may be inconsistent.

4. Claude 3.7 Sonnet – Agentic & Task-Oriented

• Strong at multi-step reasoning and technical problem-solving.

• Ideal for workflows that need clarity and explainability.

• Performs well in enterprise-grade support flows.

Best for: Agents assisting with onboarding, account issues, and transparent task handling.

Note: The output may vary slightly and can be less consistent compared to Claude 3.5.

High Accuracy, Complex Task Handling Models

o1

A reasoning AI model. Balances strong reasoning with structured outputs. Thinks before answering and produces a long internal chain of thought.

• High-intelligence decision-making in workflows

• Best suited for structured tasks and reasoning-focused applications

• Do support real-time actions.

deepseek-r1

A reasoning AI model like o1. More affordable. Works best for Chinese language tasks and queries that rely on large documents or logs.

• Reasoning-based responses

• Ideal for support involving manuals, logs, or internal documentation

• Does not support real-time actions.

o3-mini

The most efficient reasoning model in terms of cost. It’s fast, structured, and logical—great for scripted support flows.

• Reliable for logic-driven support

• Handles high volumes efficiently

• Use when you want Tier 1 logic without the high cost

• Can also perform realtime actions.

Fastest and Most Affordable Models

GPT-4o Mini

Faster than GPT-3.5 and better with visuals and languages. Great for high-volume bots.

• Use for multilingual support with low cost

• Supports images and light troubleshooting

llama-4-scout ( Fastest Model Available)

• Ultra-low latency (0.5x response time).

• Ideal for Tier 1 bots, instant replies, and time-sensitive tasks.

• Supports real-time actions.

Best for: Instant-response bots or any use case where speed is more important than complexity.

gemini-2.0-flash

• Also runs at 0.5x latency, similar to llama-4-scout.

• Lightweight, responsive, and supports real-time execution.

• Slightly better at structured tasks than GPT-3.5 Turbo.

GPT-3.5 Turbo (legacy)
Good enough for basic support and FAQs. Very fast and cheap.

• Use when cost matters more than logic

• Works for basic queries and low-risk interactions

Summary – Which Model to Pick?

Final Notes

• If you're unsure, start with GPT-4 or Claude 3.5 Sonnet — both are stable, well-tested, and trusted by thousands of businesses.

• YourGPT makes it easy to test multiple models and switch later, based on what works best for your data and workflows.

Have a unique use case? Reach out to our team—we’ll help you pick the right model based on performance, cost, and complexity.