Coding · sub-racePhoto finish
Mobile Apps race
Swift, Kotlin, React Native and Flutter apps that build, run and look native.
- Leader
- Opus 5.5
- Margin
- 0.4 pts
- 0.5% ahead
- Weeks at #1
- 4
- in a row
- Changes
- 5
- in 2026
Warming up the track…
Oct 19, 2026Opus 5.5 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 frontierOpus 5.5Fable 5.1GPT-6 AstraSonnet 5.5GPT-6.1 SolMuse Wonder
Reigns at #1
Longest: Opus 4.6, 14 weeks (from Feb 2026).
Sibling races
More coding races
Why this race matters
Mobile toolchains are unforgiving; many models write code that never compiles.
How it is scored
Share of tasks that build and pass UI tests in a simulator.
Unit: percentHigher is betterPhoto finish under 0.5 ptsDominant over 3.0 pts
Data provenance
Mobile build evals
Apps built from spec and checked in simulators.
Scores here are illustrative placeholders that mimic real benchmark patterns. Swap in live data through the score provider. Methodology