FrontierSWE v2 B
AI benchmark · Coding
- Publisher
- Proximal
- Domains
- Coding Long-Horizon Private Codebases
- On X
- @proximalhq ↗
- Tier
- B why
- Snapshot

Full listing name: FrontierSWE v2: 34 ultra-long-horizon coding tasks, Proximus harness (2026-09). https://www.frontierswe.com/blog/v2 ; https://github.com/Proximal-Labs/frontier-swe-v2
Latest from Proximal on X
@proximalhq ↗Tier B
B
Established: 15 or more models scored, or curated RL directories rate it.
How much stands behind a tier: usage, who backs it, a confirmed line from its own site or paper, and a clear read on X. High with three of the four, medium with two, low otherwise.
- 20 models scored
- built by Proximal
- in curated RL directories (4 pts)
How we got to tier B
- Adoption: 20 models scored; built by Proximal. Tier B.
- Not yet read on X.
- In curated RL directories: 4 points, a floor of B.
- Not yet confirmed by a line from its own site or paper.
A clear view on X moves a tier one step up or down; most entries don't move. How tiers work.
Not on the map yet: no line from its own site or paper places it in a domain.
Next: browse all benchmarks. Entry from the RL Research daily scrape of public sources, 2026-10-11 snapshot.