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Open models vs Claude: Kimi K3, GLM 5.3 and DeepSeek V4 Pro against Sonnet 5.5 and Opus 5.5

Originally published on the QuickSilver Pro blog . The usual reason to choose an open model over Claude is price. Now that every Claude model on QuickSilver Pro costs 75% less than Anthropic's list price, that reason needs checking again, and so does the question of what you give up in quality. So…

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  1. 2026-11-06 01:44 · DEV Community — AI
    Open models vs Claude: Kimi K3, GLM 5.3 and DeepSeek V4 Pro against Sonnet 5.5 and Opus 5.5

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