Benchmark Almanac

OpenScore String Quartets

In use

Models transcribe images of string quartet sheet music into symbolic notation. Scored as 1 minus normalized edit distance from the reference encoding.

OpenAI's exact setup is unpublished, and the separate OSSQ-OMR benchmark uses the same corpus and metric.

Released
September 2026
Kind
Documents, charts and text in images
Level
University
Scored
Checked automatically
Answers
Short answer
Strongest model tested
GPT-6 Astra #3 on the capability index
Last in a launch post
September 2026
Last model added
September 2026
1
Model scored in lab cards
1
Launch post lists it, from 1 lab

GPT-6 Astra leads with 0.84

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

  1. 1 GPT-6 Astra 0.84

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 GPT-6 Astra 0.84 Sep 2026 Lab model card

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card
0.84 0.84

Source: Labs’ model cards

One lab put it in a launch post in the last six months

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

OpenAI
DateLaunch postScoreAs the post writes it
Sep 3, 2026 GPT-6 Astra 0.84 OpenScore String Quartets (1 - OMR-NED)

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