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Graph-of-Thought: Non-Linear Reasoning with Merge and Refine

Mar 30, 2026·7 min·AI

Trees branch and backtrack but never merge or loop. Graph-of-Thought extends the search to a directed graph, adding aggregation of parallel branches and refinement of earlier thoughts. The payoff is on problems that need synthesis rather than pure search.

Evaluator-Optimizer: Iterative Refinement with a Separate Critic LLM

Mar 9, 2026·7 min·AI

Some tasks improve on a second pass, but only when the critic is a separate LLM with its own mandate. Asking a generator to grade its own work produces confident praise for mediocre output.

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