Data as of October 1, 2026 · How the score is built
Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench)
Decision readingArena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench) is tracked, but not publicly ranked yet. The original benchmark tables below include the published metrics for this evaluated configuration. Their distinct protocols remain outside general model rankings.
Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench) will be repriced, updated or retired. Get each notice with its source and date. Follow model changes
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Original benchmark results
Every published metric for this configuration, with source precision and evaluation limits. Download results (JSON) · Numeric metrics (CSV)
Maintainer results on GPT-4o response pairs
JudgeBench’s paper and maintained leaderboard report judges under different prompts, reasoning efforts, and response-model splits. Accuracy is a percentage. The paper’s 700-pair GPT-4o split is distinct from the 270-pair Claude split. The app appends the same Nemotron CSV to both tabs without specifying a response split; we show that supplement once with its split unresolved. Live one-decimal values and paper two-decimal values are preserved separately.
GPT-4o-2024-05-13 response split. The public app rounds to one decimal; paper tables retain two decimals.
Published source · Full JudgeBench results
JudgeBench: A Benchmark for Evaluating LLM-Based Judges — Sijun Tan and colleagues. Numeric results transcribed and reformatted; evaluation notes and model links added by BenchLM. Published numeric precision is retained.
| Judge | Type | Knowledge (%) | Reasoning (%) | Math (%) | Coding (%) | Overall (%) |
|---|---|---|---|---|---|---|
| Arena-Hard (o3-mini-2025-01-31 (medium)) | Prompted Judge | 62.3 | 86.7 | 85.7 | 92.9 | 76.6 |
Paper: Arena-Hard prompted judges
JudgeBench’s paper and maintained leaderboard report judges under different prompts, reasoning efforts, and response-model splits. Accuracy is a percentage. The paper’s 700-pair GPT-4o split is distinct from the 270-pair Claude split. The app appends the same Nemotron CSV to both tabs without specifying a response split; we show that supplement once with its split unresolved. Live one-decimal values and paper two-decimal values are preserved separately.
Paper v2; source group labels and published precision are retained.
Published source · Full JudgeBench results
JudgeBench: A Benchmark for Evaluating LLM-Based Judges — Sijun Tan and colleagues. Numeric results transcribed and reformatted; evaluation notes and model links added by BenchLM. Published numeric precision is retained.
| Judge model | Knowledge (%) | Reasoning (%) | Math (%) | Coding (%) | Overall (%) |
|---|---|---|---|---|---|
| o3-mini (medium) | 62.34 | 86.73 | 85.71 | 92.86 | 76.57 |
Lineage
The sequence follows explicit supersedes links. Each score is estimated for that model; a relative can inform a sparse estimate but never sets a floor, so a newer release can score below an earlier one. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
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Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench)Not publicly ranked · Price not listed
Benchmark-system
Spec sheet
Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.
- API model ID
- Not publishedProvider pricing
- Context window
- Not published
- Maximum output
- Not sourced yet
- Knowledge cutoff
- Not sourced yet
- Input modalities
- Not sourced yet
- Output modalities
- Not sourced yet
- Parameters
- Not sourced yet
- Availability
- Not sourced yet
- Cloud regions
- Not tracked yet
- Lifecycle
- Tracked
- API capabilities
- Tool calling, structured outputs, and batch support are not tracked yet
- Prompt caching
- Not documented in the pricing recordProvider pricing
- Self-host
- Weights are not published
- Rate limits
- Not tracked yet
How to read this profile
The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.
The original benchmark tables show this evaluated configuration’s published results. Training choices, prompts, response splits, and metrics remain attached to each table. The profile stays outside general model rankings.
Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench) is a evaluated configuration model. No explicit reasoning mode is documented in this profile.
The original benchmark results appear in the source tables above; they remain separate from weighted benchmark slots.
Last updated October 1, 2026. Runtime fields remain blank until a sourced snapshot exists.
Questions
How does Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench) perform overall in AI benchmarks?
This configuration has original benchmark results in the source tables on this profile. Every published metric retains its evaluated configuration, source precision, and protocol. These results stay outside general model rankings; they do not produce a public overall score or transfer to a base model with different settings.
Does Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench) have full benchmark coverage on BenchLM?
This configuration has results in the original benchmark tables on this profile. Those tables preserve every imported source metric, but they do not fill the site’s general scoring slots. Other benchmarks remain unmeasured, and compatible configurations are required before comparing results across different reports.
What is the context window size of Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench)?
Arena-Hard (o3-mini-2025-01-31 (medium)) (JudgeBench)'s context window is not documented in a source tied to this exact model yet. The profile leaves the value unavailable instead of borrowing a limit from an earlier family member or an unverified route. Maximum output length remains a separate field.