GPT-4o

OpenAI

8.5/10

Dimension Breakdown

Tool Calling 9/10

Reliability of function/tool calling — correct schema adherence and parameter extraction

Cost Efficiency 8/10

Price per token relative to output quality for agent tasks

Latency 8/10

Response time — time to first token and total generation time under load

API Reliability 9/10

Uptime, rate limit headroom, and error rates in production

Context Quality 8/10

Long-context coherence and instruction following over turns

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Top Use Cases

Coding RAG General

Summary

Strong tool-calling and fast responses make GPT-4o excellent for agent workflows requiring frequent function execution.

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Last updated: May 4, 2026