Skip to content

Benchmark checker Coding

Is GSO still meaningful?

Near ceiling Checked against the report, 5 November 2026

Fading. The top score is 88.2%, and the scaffold drives results.

Why near ceiling: The chapter rates it Near ceiling: Claude Fable 5.1 scores 88.2%.^{[1][1] Benchmark data bundle Epoch AI Primary}

What “Near ceiling” means

Known problems

Scaffold choice drives results.^{[1][1] Benchmark data bundle Epoch AI Primary}

What to look at instead

The report names no direct successor.

Where it appears in the report

Chapter 1, Benchmarks

Table 6. Coding and software-agent benchmarks, November 2026 in “Go deeper: Coding and software-agent benchmarks (14)”

Sources

Copied from the chapter source lists. Each number links back to the source in its chapter.

[1]
Benchmark data bundle, Epoch AI. Dated scores (5 Nov 2026) and ceilings for most benchmarks here. Primary epoch.ai Chapter 1, source 1