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Benchmark · Coding

SWE-bench Verified

A 500-task human-screened subset of SWE-bench (built with OpenAI) where issues are judged clear and tests valid.
FlawedMore benchmarks in CodingDefinition checked against sources

Definition

Short name
SWE-bench Verified
Category
Coding
Introduced
2024
Metric
% resolved (of 500)
Direction
Higher is better
Paper
No paper
Reference check
Confirmed against the paper or official site

Health review

As of

Flawed

Documented problems — label errors, weak tests or contamination — materially affect scores.

Epoch AI’s benchmark review gives SWE-bench Verified a "Flawed" verdict (September 2026).

Source: epoch.ai — source for this health review (external site)

Caveats

Results on file

4 results in 1 comparability group (4 vendor-reported). Results are only charted against others in the same group — the same benchmark and the same variant as named by the source. Last retrieved .

SWE-bench Verified · No variant stated

4 results

The sources did not name a version or subset for these results.

Not directly comparable

These are vendor-reported numbers from 4 different organisations. Each source chose its own settings — reasoning effort, tools, harness or scaffold, number of attempts, grader — so a longer bar is a claim made under different conditions, not evidence that one model is better. None of these results has been reproduced by HARBAN.

SWE-bench Verified · No variant stated: % resolved (of 500)Horizontal bar chart of 4 results on a 0–100% scale, each as reported by its source under that source's own settings. Values: Gemini 3.1 Pro (Thinking (High)) 80.6%; Mistral Medium 3.5 77.6%; Muse Glimmer (High Reasoning) 76.0%; gpt-oss-120b (reasoning level high) 62.4%.Gemini 3.1 Pro (Thinking (High)): 80.6%
Gemini 3.1 Pro · Thinking (High)
80.6%
Mistral Medium 3.5: 77.6%
Mistral Medium 3.5
77.6%
Muse Glimmer (High Reasoning): 76.0%
Muse Glimmer · High Reasoning
76.0%
gpt-oss-120b (reasoning level high): 62.4%
gpt-oss-120b · reasoning level high
62.4%
Metric: % resolved (of 500). Higher is better. The table below has every value with its settings and source.
SWE-bench Verified · No variant stated — results as reported by their sources
ModelModel detailScoreSettings (as stated)SourceEvidence
Gemini 3.1 ProThinking (High)
80.6%No CI reported
Single attempt; methodology PDF says averaged over 10 runs with a bash + file-edit + submit-tool scaffold, and that the score includes a +0.6-point adjustment after Google fixed 3 official-harness items (astropy-7606, sphinx-8595, sphinx-9711) the model passed internally
Show excerpt for Gemini 3.1 Pro (Thinking (High)) on SWE-bench Verified, No variant stated
“SWE-Bench Verified Agentic coding Single attempt 80.6%”

Retrieved

Mistral Medium 3.5Not stated by source
77.6%No CI reported
conditions not stated
Show excerpt for Mistral Medium 3.5 on SWE-bench Verified, No variant stated
“It scores **91.4%** on τ³-Telecom and **77.6%** on SWE-Bench Verified.”

Retrieved

Muse GlimmerHigh Reasoning
76.0%No CI reported
High reasoning; scaffold with a bash tool and a file-operation tool; average pass rate over 500 tasks, averaged across 4 runs (Meta methodology report).
Show excerpt for Muse Glimmer (High Reasoning) on SWE-bench Verified, No variant stated
“| SWE-Bench Verified | 76.0 | 66.6 | **77.2** |”

Retrieved

gpt-oss-120breasoning level high
62.4%No CI reported
reasoning level high (Table 3)
Show excerpt for gpt-oss-120b (reasoning level high) on SWE-bench Verified, No variant stated
“SWE-Bench Verified 47.9 52.6 62.4”

Retrieved

Vendor-reported:
Published by the organisation that built the model. Not independently reproduced.

Definitions, health labels and caveats are summarised in our own words from the linked sources. Scores are reproduced exactly as each source published them; see the methodology for how we record and group them.

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