Migrating a production AI agent to GPT-5.6: 2.2x faster, 27% cheaper
8.6 relevance
Score Breakdown
technical depth 9
novelty 8
actionability 9
community 8
strategic 7
personal 10
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Real migration to GPT-5.6 with performance and cost data, directly applicable.
Summary
Ploy migrated its production AI agent from Claude Opus to OpenAI's GPT-5.6 Sol, achieving 2.2x faster builds and 27% lower cost with half the output tokens. The switch required fixing the eval harness, tool schemas, caching, and reasoning replay due to provider-specific behaviors like parallel tool calls and batched file reads, which the Vercel AI SDK didn't abstract. A third of initial failures traced to harness assumptions tuned to Opus, not model quality.