Claude, GPT and Gemini newcomers top Artificial Analysis coding agent index
10/02/2026 — 10/04, 17:15·1 sources·1 reports
Artificial Analysis's Coding Agent Index this week added Claude Sonnet 5.5, GPT-6.1 Sol and Gemini 4 Argon, all landing near the top of the board with differing performance-to-cost trade-offs. The index measures agents formed by pairing a model with a harness, rather than model performance in isolation.
Latest turnClaude Sonnet 5.5, GPT-6.1 Sol and Gemini 4 Argon all launched near the top of the Artificial Analysis Coding Agent Index this week, each with a different balance of performance and cost. The index measures agents as a combination of model and harness.
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Claude Sonnet 5.5, GPT-6.1 Sol and Gemini 4 Argon all launched near the top of the Artificial Analysis Coding Agent Index this week, each with a different balance of performance and cost. The index measures agents as a combination of model and harness.
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