Dev evals 20+ third-party models vs Gemini for spec quality: all fail, "wasteland of mediocrity"

julianharris · x · 2026-09-30

Julian Harris ran a large-scale eval hunting for a materially cheaper alternative to Gemini 3.6 Flash on spec quality, testing essentially everything DeepInfra offers. All models failed. He bet Claude on the outcome beforehand and won — most third-party models were simply too old to compete with today's SOTA. He expected free Chinese open models to give third-party infra an edge, but they didn't; despite a 10x price hike over the past year (doubling again in January), Gemini "absolutely cleans up" for his use case. He eval'd 20+ models in one day and calls the third-party landscape a "wasteland of mediocrity."

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