FullStackBench
Models write code for 3,374 problems in 16 programming languages across domains like data analysis and web development. Unit tests score each answer.
In the authors’ words
As the capabilities of code large language models (LLMs) continue to expand, their applications across diverse code intelligence domains are rapidly increasing. However, most existing datasets only evaluate limited application domains. To address this gap, we have developed a comprehensive code evaluation dataset FullStack Bench focusing on full-stack programming, which encompasses a wide range of application domains (e.g., basic programming, data analysis, software engineering, mathematics, and machine learning). Besides, to assess multilingual programming capabilities, in FullStack Bench, we design real-world instructions and corresponding unit test cases from 16 widely-used programming languages to reflect real-world usage scenarios rather than simple translations. Moreover, we also release an effective code sandbox execution tool (i.e., SandboxFusion) supporting various programming languages and packages to evaluate the performance of our FullStack Bench efficiently. Comprehensive experimental results on our FullStack Bench demonstrate the necessity and effectiveness of our FullStack Bench and SandboxFusion.
- Level
- University Undergraduates and entry-level professionals
- 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.
MiniMax-M1-80k leads with 68.3% among models released by Feb 2026
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.
The newest model with a score here came out in Feb 2026, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- GPT-6 Astra
- Claude Opus 5.5
- GPT-6.1 Terra
- GPT-6.1 Sol
- and 16 more
- 1
MiniMax-M1-80k 68.3%
- 2
Hunyuan-A13B-Instruct 67.8%
- 3
ERNIE-4.5-300B-A47B 67.1%
- 4
Qwen3.5-122B-A10B 60.7%
- 5
qwen3-coder-next 60.6%
- 6
Seed-Coder-8B-Instruct 55.8%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | | 68.3% | Jun 2025 | Model card | |
| 2 | | 67.8% | Jun 2025 | Model card | |
| 3 | | 67.1% | Jun 2025 | Model card | |
| 4 | | 60.7% | Feb 2026 | Model card | |
| 5 | | 60.6% | Feb 2026 | Model card | |
| 6 | | 55.8% | Jun 2025 | Model card |
2 models have held number one since its release in Nov 2024
Lab claims count from the day the card came out, independent runs from the model’s release.
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs headline it less often now, last in Feb 2026
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 24 Feb 2026 | 60.7 | Mean of FullStackBench en 62.6 / FullStackBench zh 58.7 | |
| 30 Jun 2025 | 67.1 | FullStackBench | |
| 27 Jun 2025 | 67.8 | Fullstackbench | |
| 16 Jun 2025 | 68.3 | FullStackBench |
5 system cards report it, from 5 labs
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 |
|---|---|---|---|---|
| 28 Feb 2026 | | 60.6 | FullStackBench-en, zh 57.38 (Table 7) | Capabilities |
| 29 Jun 2025 | | 67.1 | FullStackBench (Table 5) | Capabilities |
| 26 Jun 2025 | | 67.8 | FullstackBench, slow-thinking (Table 3). Fast-thinking 58.3 (Table 4) | Capabilities |
| 16 Jun 2025 | | 68.3 | FullStackBench, avg of 16 samples (Table 2) | Capabilities |
| 4 Jun 2025 | | 55.8 | FullStack Bench Overall pass@1 (Tables 10 and 11) | Capabilities |
More in Coding
- SWE-bench Verified In use 500 human-validated GitHub issues from 12 Python repos. Agent writes a patch that must pass hidden tests. Claude Opus 4.7 83.5%
- SWE-bench Multilingual In use 300 GitHub-issue tasks across nine programming languages in SWE-bench format. Patch graded by repository tests. Claude Opus 5.5 93.9%
- LiveCodeBench v6 In use Competitive programming problems collected after model cutoffs from LeetCode, AtCoder, Codeforces. Scored pass@1 on hidden tests.
DeepSeek-V4-Pro 93.5%
- DeepSWE In use 113 original long-horizon engineering tasks across 91 repos and five languages, written from scratch. Hand-written verifiers accept alternative solutions. GPT-6 Astra 74.1%
- SciCode In use Scientist-curated research coding problems split into subproblems across natural sciences. Code checked against test cases.
Seed2.1 Pro 59.8%
- Codeforces rating In use Model solves recent Codeforces contest problems. An Elo-style rating is computed from simulated contest performance.
DeepSeek V4.1 Flash 3,471