CF-Div2-Stepfun
Step 3.5 Flash 86.1% Only in system cards Models solve 53 Codeforces Div. 2 problems from September 2024 to February 2025. An offline judge with rebuilt test cases scores C++, Python and Java submissions.
StepFun reports avg@8 accuracy per language and an estimated Codeforces rating. The judge flags 92.45% of known failed submissions.
- Level
- Competition The strongest students, in olympiad-style contests
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Code A program or patch run against tests.
Step 3.5 Flash leads with 86.1%
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
- 1 Step 3.5 Flash 86.1%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Step 3.5 Flash | 86.1% | Feb 2026 | Model card |
The best score passed 85% in Feb 2026
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs report it only in system cards
We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark. Some system cards do, below.
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 11 Feb 2026 | Step 3.5 Flash technical report | 86.1 | CF-Div2-Stepfun-cpp, avg@8 (Tables 5 and 15). PaCoRe 93.3. Python 81.5, Java 77.1, estimated Codeforces C++ pass@8 rating 2489 (Table 15) | Capabilities |
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