A record of finding out whether the model used in Claude Code can be replaced with an open-weight model. Part 1 analyzes how SWE-bench tasks are built and graded and sets out the principles for comparison. Part 2 will set up the actual execution environment and experimental conditions, and part 3 will decide whether to switch models based on resolved rate, cost, and failure cases.
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Deciding Whether to Swap the Model Behind a Coding Agent
Examining how SWE-bench builds and grades its tasks, designing an experiment to compare models in Claude Code, and deciding whether to switch based on resolved rate and cost.
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