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BigCodeBench

BigCode Project
open source / Overall score: 2.5

Evaluation harness for code-generation models over 1,140 practical programming tasks that require using multiple libraries and tools, scored with branch-coverage tests. It tests real library use rather than self-contained algorithmic puzzles, ships Complete and Instruct splits, and runs end to end locally or against a hosted evaluator.

The harness repository was archived read-only in January 2026. The benchmark's dataset is listed separately on the map; this record is the runnable harness.

Openness

5 high confidence
5.0
license
Apache-2.0(OSI)
source
public(GitHub)
core features withheld
no — no paid tier or license key, harness runs locally with --execution local

Apache-2.0 and fully public, and Apache-2.0 is an OSI license, so this is open source. The repo is archived and read-only, which freezes the source rather than withdrawing it, so it counts as public and ungated all the same.

Adoption

2 medium confidence
2.0

BigCodeBench's only adoption signal is GitHub stars across its two repositories, the benchmark harness and its sibling evaluation harness, since neither publishes a PyPI or install figure. Stars alone cannot place a benchmark past a modest reading, because a star is not a use, and the harness repository is now archived and read-only, so its star count is fixed going forward.

Capability

3 medium confidence
3.0

BigCodeBench scores code generation by executing more than a thousand library-heavy programming tasks, split into Complete and Instruct variants. Because it covers code generation only, it sits a step below OpenCompass and further behind lm-evaluation-harness, both of which span many kinds of task.

Verified 2026-09-22