Benchmark
SWE-Lancer Benchmark
What is SWE-Lancer?
A benchmark for evaluating large language models on real-world freelance software engineering tasks from Upwork. Contains over 1,400 tasks valued at $1 million…
- Released
- 2025-02-17
- Modality
- text
- Evaluates
- reasoning, code
- Openness
- unknown
- Importer
- LLM Stats
- Reported scores
- 4
Source provenance
- Original evidence https://api.zeroeval.com/leaderboard/benchmarks/swe-lancer?top_n=500
SWE-Lancer results and reported scores
LLM Stats
| Model | Organization | Reported value | Reported | Evidence |
|---|---|---|---|---|
| GPT-4.5 | OpenAI | 0.373 | 2025-02-27 | evidence |
| GPT-4o | OpenAI | 0.326 | 2024-08-06 | evidence |
| GPT-5.1 Codex | OpenAI | 0.663 | 2025-11-19 | evidence |
| o3-mini | OpenAI | 0.18 | 2025-01-30 | evidence |
Scores are partitioned by the source that reported them and are never merged into a single cross-source ranking, because the sources measure different things and say so.