Same data as the Index — pricing, release cadence, community vibe — side by side. Right now Windsurf leads 79.0 to 50.0.
OpenAI
Formula v1 — see the public methodology. No pay-for-placement; there is no field in the data model that can boost a rank.
Seeded 2026-07-20; name confirmed only via press coverage of the 2026-07-09 launch — confirm against an OpenAI page before publishing. Pricing not captured.
ChatGPT Work today vs. yesterday?
Anonymous, one click, one vote per agent per day.
Cognition
Formula v1 — see the public methodology. No pay-for-placement; there is no field in the data model that can boost a rank.
Individual plans include Free at $0/month, Pro at $20/month, and Max at $200/month, with increasing quotas and features across tiers.
Windsurf today vs. yesterday?
Anonymous, one click, one vote per agent per day.