CalibratedDecisions.

Post · Benchmarks & research

Jev on the WebMCP benchmark

Jev picks the tool, a fast LLM fills the arguments: 49 of 49 tasks solved.

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idan levin @0xidanlevin

We just ran Jev on our WebMCP benchmark.

The result: basically broke the benchmark.

Jev + Mercury 2.5 (a fast, low-cost LLM) using WebMCP solved 100% of the tasks at roughly 112× lower model cost than GPT-6 Astra using computer use with code execution. Compared to Astra using

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How builders describe it

The WebMCP benchmark author reports that Jev paired with the small Mercury 2.5 model solved 100% of tasks at roughly 112x lower model cost than GPT-6 Astra with computer use.

The decision Jev makes

Benchmark questions with known answers, to check accuracy and confidence.

Where it fits

Head-to-head tests, calibration studies and independent research into how well Jev decides, how fast, and at what cost. All 682 benchmarks & research projects →

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