FullStackBench en
Progress Over Time
Interactive timeline showing model performance evolution on FullStackBench en
State-of-the-art frontier
Open
Proprietary
FullStackBench en Leaderboard
3 models
| Context | Cost | License | ||||
|---|---|---|---|---|---|---|
| 1 |  Alibaba Cloud / Qwen Team | 122B | — | — | ||
| 2 | Alibaba Cloud / Qwen Team | 27B | 262K | $0.30 / $2.40 | ||
| 3 | Alibaba Cloud / Qwen Team | 35B | — | — |
Notice missing or incorrect data?
What is FullStackBench en?
English subset of FullStackBench for evaluating end-to-end software engineering and full-stack development capability.
FullStackBench en is a text benchmark evaluating models on reasoning, agents, and code tasks. LLM Stats tracks 3 models on this benchmark, scored on a 0–1 scale. The current average is 0.6, with the leader at 0.6.
Compare leaders on the best AI for reasoning, best AI for agents and best AI for code leaderboards.
Current leaders
Qwen3.5-122B-A10B from Alibaba Cloud / Qwen Team currently leads the FullStackBench en leaderboard with a score of 0.626 across 3 evaluated AI models.
FAQ
Common questions about the FullStackBench en benchmark and leaderboard.