RankingCursorBench · 3.2.0

CursorBench · 3.2.0

Data updated 24 Sept 2026

Bucket: Supporting evidence
Unit: percent
Direction: Higher is better
Version: 3.2.0
Display harness: Claude Fable 5.1 and Claude Mythos 5.1 System Card
Board: https://www.anthropic.com/claude-fable-5-1-mythos-5-1-system-card

The available records have no admitted matched comparison in the capability core. Raw results remain available below.

Compare published benchmark results with category weights →

Models

Published configurations retain their source and harness labels. Missing results remain unknown.

1–5 of 5 entries

Model	Score	Harness	Evidence	Source-recorded date
Claude Fable 5.1Anthropic	73.4% Reported settings & source Cursor production agent harness; independently measured by Cursor; max effort. Fable is the safeguarded deployed configuration; selected tasks may use disclosed Opus fallback, except evaluations explicitly counting safety blocks as failures. Claude Fable 5.1 and Claude Mythos 5.1 System Card · 8.8 · reviewed 2026-09-24	Claude Fable 5.1 and Claude Mythos 5.1 System Card	lab self-report	2026-09-24
Claude Fable 5Anthropic	70.5% Reported settings & source Cursor production agent harness; independently measured by Cursor; max effort. Fable is the safeguarded deployed configuration; selected tasks may use disclosed Opus fallback, except evaluations explicitly counting safety blocks as failures. Claude Fable 5.1 and Claude Mythos 5.1 System Card · 8.8 · reviewed 2026-09-24	Claude Fable 5.1 and Claude Mythos 5.1 System Card	lab self-report	2026-09-24
Claude Opus 5Anthropic	70% Reported settings & source Cursor production agent harness; independently measured by Cursor; max effort. Claude Fable 5.1 and Claude Mythos 5.1 System Card · 8.8 · reviewed 2026-09-24	Claude Fable 5.1 and Claude Mythos 5.1 System Card	lab self-report	2026-09-24
GPT-5.6 SolOpenAI	67.2% Reported settings & source Cursor production agent harness; independently measured by Cursor; max effort. Claude Fable 5.1 and Claude Mythos 5.1 System Card · 8.8 · reviewed 2026-09-24	Claude Fable 5.1 and Claude Mythos 5.1 System Card	lab self-report	2026-09-24
Claude Fable 5.1Anthropic	68% Reported settings & source Cursor production agent harness; medium effort; $3.53/task. Fable is the safeguarded deployed configuration; selected tasks may use disclosed Opus fallback, except evaluations explicitly counting safety blocks as failures. Claude Fable 5.1 and Claude Mythos 5.1 System Card · 8.8 · reviewed 2026-09-24	Claude Fable 5.1 and Claude Mythos 5.1 System Card	lab self-report	2026-09-24