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Loading the latest published snapshot and its supporting evidence.
Exact claude-opus-4-8 identifier in the official Arena text leaderboard published 2026-07-21.
A current roll-up of published ranks, normalized facts, primary evidence, and entity relationships. No missing value is inferred.
| Metric | Value |
|---|---|
| model_human_preferenceArena rating lower confidence bound | 1,468.33 arena_scorederived |
| model_human_preferenceArena rating upper confidence bound | 1,478.54 arena_scorederived |
| model_human_preferenceArena rating variance | 6.78 arena_score_squaredderived |
| model_human_preferenceArena text style-controlled rating | 1,473.43 arena_scorederived |
| model_human_preferenceArena vote count | 31,619 votesmeasured |
Every currently published position, as of Jul 21, 2026 · 100% confidence · methodology varena-text-style-control-2026-07-21-fb100fd1a486-v1.
| Rank | Leaderboard | Score | Explain |
|---|---|---|---|
| #22 | Arena Text Preference | 1,473.43 | Explain Arena Text Preference rank → |
Ranks official Arena model identifiers by the published style-controlled text overall rating.
Some explanation inputs are unavailable Missing: publicFrozenEvidence, comparablePriorRanking.
100% confidence · 36% component coverage · as of Jul 21, 2026, 11:59 PM UTC
| Component | Value | Weight | Contribution | Evidence | Status |
|---|---|---|---|---|---|
| arena text rating lower bound | — | 0% | 0 | 1 | available |
| arena text rating upper bound | — | 0% | 0 | 1 | available |
| arena text rating variance | — | 0% | 0 | 1 | available |
| arena text style controlled rating | — | 100% | 1,473.432 | 1 |
5 published observations for claude-opus-4-8, all at 100% confidence, as of Jul 21, 2026. Open a row for the source, evidence location, extraction method, and quality state.
| Metric | Value | Kind | Evidence |
|---|---|---|---|
| Arena text style-controlled ratingarena-text-style-controlled-rating | 1,473.4318arena_score | derived | View source
|
| Arena rating upper confidence boundarena-text-rating-upper-bound | 1,478.5364arena_score | derived | View source
|
| arena text vote count | — | 0% | 0 | 1 | available |
|---|
| datasetRevision | fb100fd1a48607efb93e28ba6610b641a7ac1bce | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| metrics | Structured | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| modelLicense | Proprietary | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| organization | anthropic | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| publishDate | 2026-07-21 | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| rankingDirection | descending | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| sourceModelId | claude-opus-4-8 | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| styleControlled | 1 | Unavailable | — | 0 | unavailableno_public_frozen_evidence |
|---|
| upstreamRank | 22 | Unavailable | 22 | 0 | unavailableno_public_frozen_evidence |
|---|
no_prior_published_snapshot
No component moved since the prior snapshot.
{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}{"filter":"category = overall","datasetCard":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset/blob/fb100fd1a48607efb93e28ba6610b641a7ac1bce/README.md","methodology":"https://github.com/lmarena/arena-rank","datasetSplit":"latest","datasetConfig":"text_style_control","datasetRevision":"fb100fd1a48607efb93e28ba6610b641a7ac1bce"}| Arena rating variancearena-text-rating-variance | 6.7829arena_score_squared | derived | View source
|
|---|
| Arena rating lower confidence boundarena-text-rating-lower-bound | 1,468.3273arena_score | derived | View source
|
|---|
| Arena vote countarena-text-vote-count | 31,619votes | measured | View source
|
|---|