Benchmark Almanac

CodeEditorBench

GPT-4 Jun 2023 85.5% leads since Apr 2024 Only in system cards

Models edit code in four scenarios: debugging, translation, requirement switching and polishing. Unit tests check the edits, and polishing also measures speed and memory gains.

Problems come from five sources across several programming languages. Model reports usually give the four scenario scores with no overall number.

In the authors’ words

Large Language Models (LLMs) for code are rapidly evolving, with code editing emerging as a critical capability. We introduce CodeEditorBench, an evaluation framework designed to rigorously assess the performance of LLMs in code editing tasks, including debugging, translating, polishing, and requirement switching. Unlike existing benchmarks focusing solely on code generation, CodeEditorBench emphasizes real-world scenarios and practical aspects of software development. We curate diverse coding challenges and scenarios from five sources, covering various programming languages, complexity levels, and editing tasks. Evaluation of 19 LLMs reveals that closed-source models (particularly Gemini-Ultra and GPT-4), outperform open-source models in CodeEditorBench, highlighting differences in model performance based on problem types and prompt sensitivities. CodeEditorBench aims to catalyze advancements in LLMs by providing a robust platform for assessing code editing capabilities. We will release all prompts and datasets to enable the community to expand the dataset and benchmark emerging LLMs. By introducing CodeEditorBench, we contribute to the advancement of LLMs in code editing and provide a valuable resource for researchers and practitioners.

Abstract of CodeEditorBench: Evaluating Code Editing Capability of Large Language Models (arXiv:2404.03543, CC0)
Made by Multimodal Art Projection (M-A-P) , University of Waterloo , HKUST and others Released Apr 2024 Function-level problems All tasks public Last in a system card Jun 2025 Last model added Jun 2025 Scores refreshed 2 Nov 2026
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.
19
Entries on its own leaderboard, 7 models we track
1
System card reports it, from 1 lab

2 models share the top score of 85.5% among models released by Jan 2024

Best score per entry from the benchmark's own leaderboard, read on 2 Nov 2026. Where a model ran with several settings or harnesses, we keep its best. Every run is in the next chart. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.

The newest model with a score here came out in Jan 2024, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 GPT-4 Jun 2023, zero-shot 85.5%
  2. 2 Gemini 1.0 Ultra three-shot 85.5%
  3. 3 OpenCodeInterpreter-DS-33B zero-shot 77.6%
  4. 4 OpenCodeInterpreter-DS-6.7B three-shot 77%
  5. 5 DeepSeek Coder 33B zero-shot 73.7%
  6. 6 Gemini 1.0 Pro zero-shot 73.7%
  7. 7 GPT-3.5 Turbo Nov 2023, zero-shot 72.4%
  8. 8 WizardCoder-33B-V1.1 three-shot 64.5%
  9. 9 Magicoder-S-DS-6.7B three-shot 60.5%
  10. 10 GLM-4 three-shot 57.2%
  11. 11 Phind-CodeLlama-34B-v2 zero-shot 50%
  12. 12 CodeLlama-34B-hf three-shot 47.4%
  13. 13 octocoder zero-shot 43.4%
  14. 14 CodeLlama-13B-Instruct-hf zero-shot 42.1%
  15. 15 Magicoder-S-CL-7B zero-shot 32.9%
  16. 16 WizardCoder-15B-V1.0 zero-shot 32.9%
  17. 17 CodeFuse-CodeLlama-34B three-shot 28.9%
  18. 18 CodeLlama-7B-Instruct-hf zero-shot 28.9%
  19. 19 Code Llama 34B Instruct zero-shot 21.1%
#EntryScoreSettingDateSource
1 GPT-4 Jun 2023 85.5% zero-shot Jun 2023 Official leaderboard
2 Gemini 1.0 Ultra 85.5% three-shot Dec 2023 Official leaderboard
3 OpenCodeInterpreter-DS-33B 77.6% zero-shot Apr 2024 Official leaderboard
4 OpenCodeInterpreter-DS-6.7B 77% three-shot Apr 2024 Official leaderboard
5 DeepSeek Coder 33B 73.7% zero-shot Nov 2023 Official leaderboard
6 Gemini 1.0 Pro 73.7% zero-shot Dec 2023 Official leaderboard
7 GPT-3.5 Turbo Nov 2023 72.4% zero-shot Nov 2023 Official leaderboard
8 WizardCoder-33B-V1.1 64.5% three-shot Apr 2024 Official leaderboard
9 Magicoder-S-DS-6.7B 60.5% three-shot Apr 2024 Official leaderboard
10 GLM-4 57.2% three-shot Jan 2024 Official leaderboard
11 Phind-CodeLlama-34B-v2 50% zero-shot Apr 2024 Official leaderboard
12 CodeLlama-34B-hf 47.4% three-shot Apr 2024 Official leaderboard
13 octocoder 43.4% zero-shot Apr 2024 Official leaderboard
14 CodeLlama-13B-Instruct-hf 42.1% zero-shot Apr 2024 Official leaderboard
15 Magicoder-S-CL-7B 32.9% zero-shot Apr 2024 Official leaderboard
16 WizardCoder-15B-V1.0 32.9% zero-shot Apr 2024 Official leaderboard
17 CodeFuse-CodeLlama-34B 28.9% three-shot Apr 2024 Official leaderboard
18 CodeLlama-7B-Instruct-hf 28.9% zero-shot Apr 2024 Official leaderboard
19 Code Llama 34B Instruct 21.1% zero-shot Aug 2023 Official leaderboard

Scores at each effort level

Models the leaderboard ran at two or more effort levels. We don’t have enough cost data here to say what the extra effort costs.

Lowest effort to highest, light to dark
GPT-4
three-shot
85.5%
Gemini 1.0 Ultra
zero-shot three-shot
85.5%
DeepSeek Coder 33B
zero-shot
73.7%
Gemini 1.0 Pro
three-shot zero-shot
73.7%
GPT-3.5 Turbo
three-shot
72.4%
GLM-4
zero-shot
57.2%
Code Llama 34B Instruct
zero-shot
21.1%
ModelEffortHarnessScoreCost per taskOutput tokens
GPT-4 Jun 2023 zero-shot 85.5%
Gemini 1.0 Ultra three-shot 85.5%
GPT-4 Jun 2023 three-shot 81.6%
Gemini 1.0 Ultra zero-shot 75%
DeepSeek Coder 33B zero-shot 73.7%
DeepSeek Coder 33B three-shot 73.7%
Gemini 1.0 Pro zero-shot 73.7%
GPT-3.5 Turbo Nov 2023 zero-shot 72.4%
GPT-3.5 Turbo Nov 2023 three-shot 68.4%
Gemini 1.0 Pro three-shot 67.1%
GLM-4 three-shot 57.2%
GLM-4 zero-shot 52.6%
Code Llama 34B Instruct zero-shot 21.1%
Code Llama 34B Instruct three-shot 21.1%

Number one over time

Lab claims count from the day the card came out, independent runs from the model’s release.

OpenAI
Own leaderboard Passed 85% in Apr 2024, by GPT-4
GPT-4 85.5%

The best score passed 85% in Jun 2023

All the scores we have, one dot each, so a model tested at several settings appears more than once.

On the benchmark’s own leaderboard
0% 20% 40% 60% 80% 100% 2023 2024 Near the ceiling (85%) GPT-4 0% 20% 40% 60% 80% 100% 2023 2024 Near the ceiling (85%) GPT-4

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.

DateDocumentScoreAs the document writes itSection
4 Jun 2025 Seed-Coder-8B-Instruct technical report CodeEditorBench Debug 30.7, Translate 56.5, Switch 17.7, Polish 1.9, no overall score (Table 14) Capabilities

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  • 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