Writing & Language · sub-raceClear lead
Instruction Following race
Obeying precise, sometimes awkward constraints on format, length and content.
- Leader
- GPT-6.1 Sol
- Margin
- 1.4 pts
- 1.5% ahead
- Weeks at #1
- 3
- in a row
- Changes
- 5
- in 2026
Warming up the track…
Oct 19, 2026GPT-6.1 Sol leads
2025Apr ’25Jul ’25Oct ’252026Apr ’26Jul ’26Oct ’26
Score history
Top 6 today over the leader's frontier · click to jump to a week
#1 frontierGPT-6.1 SolFable 5.1GPT-6 AstraOpus 5.5Sonnet 5.5Gemini 4 Argon
Reigns at #1
Longest: GPT-5, 14 weeks (from Aug 2025).
Sibling races
More writing & language races
Why this race matters
Products and pipelines break when a model ignores the spec.
How it is scored
Share of constraints satisfied.
Unit: percentHigher is betterPhoto finish under 0.5 ptsDominant over 3.0 pts
Data provenance
IFBench / IFEval
Verifiable formatting and constraint checks.
Scores here are illustrative placeholders that mimic real benchmark patterns. Swap in live data through the score provider. Methodology