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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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