Anthropic / arena-v1

Claude Opus 4.6 benchmark.

Blind preference, cited external scores, and evaluation economics. Every result keeps its sample count and source date attached.

Evidence levelCited snapshot

Last update2026-08-07

Categories5

Combined quality

99.2

Arena score

Pending

Median latency

Pending

Valid votes

0

Task analysis

Performance by task.

Category	Quality	Arena	External	Evidence
coding	99.2	Pending	99.2	Cited snapshot
general	99.2	Pending	99.2	Cited snapshot
overall	99.2	Pending	99.2	Cited snapshot
reasoning	98.6	Pending	98.6	Cited snapshot
writing	98.2	Pending	98.2	Cited snapshot

Provenance

External evidence.

LMArena Text Leaderboard

2026-08-03 text_style_control 0fdff69b4fd7

overallRank #41497.2 raw99.2 percentile

Bradley-Terry ratings from LMArena's style-controlled text leaderboard. RouterPlex preserves the raw rating, source rank, confidence interval, vote count, and publish date. The displayed external score is the source-rank percentile within each source category.

Published 2026-08-03 / 70,970 source votes / retrieved 2026-08-07 / LMArena leaderboard dataset, licensed CC BY 4.0. RouterPlex includes only exact case-insensitive model-ID matches. Official leaderboard: https://arena.ai/leaderboard. Dataset: https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. Dataset commit: 4e52c8e709c90a4cad8498d9db5aad11709b04e0. LMArena is not affiliated with RouterPlex.

LMArena Text Leaderboard

2026-08-03 text_style_control 0fdff69b4fd7

codingRank #41547.9 raw99.2 percentile

Bradley-Terry ratings from LMArena's style-controlled text leaderboard. RouterPlex preserves the raw rating, source rank, confidence interval, vote count, and publish date. The displayed external score is the source-rank percentile within each source category.

Published 2026-08-03 / 19,814 source votes / retrieved 2026-08-07 / LMArena leaderboard dataset, licensed CC BY 4.0. RouterPlex includes only exact case-insensitive model-ID matches. Official leaderboard: https://arena.ai/leaderboard. Dataset: https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. Dataset commit: 4e52c8e709c90a4cad8498d9db5aad11709b04e0. LMArena is not affiliated with RouterPlex.

LMArena Text Leaderboard

2026-08-03 text_style_control 0fdff69b4fd7

reasoningRank #61504.5 raw98.6 percentile

Bradley-Terry ratings from LMArena's style-controlled text leaderboard. RouterPlex preserves the raw rating, source rank, confidence interval, vote count, and publish date. The displayed external score is the source-rank percentile within each source category.

Published 2026-08-03 / 3,848 source votes / retrieved 2026-08-07 / LMArena leaderboard dataset, licensed CC BY 4.0. RouterPlex includes only exact case-insensitive model-ID matches. Official leaderboard: https://arena.ai/leaderboard. Dataset: https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. Dataset commit: 4e52c8e709c90a4cad8498d9db5aad11709b04e0. LMArena is not affiliated with RouterPlex.

LMArena Text Leaderboard

2026-08-03 text_style_control 0fdff69b4fd7

writingRank #81478.0 raw98.2 percentile

Bradley-Terry ratings from LMArena's style-controlled text leaderboard. RouterPlex preserves the raw rating, source rank, confidence interval, vote count, and publish date. The displayed external score is the source-rank percentile within each source category.

Published 2026-08-03 / 11,674 source votes / retrieved 2026-08-07 / LMArena leaderboard dataset, licensed CC BY 4.0. RouterPlex includes only exact case-insensitive model-ID matches. Official leaderboard: https://arena.ai/leaderboard. Dataset: https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. Dataset commit: 4e52c8e709c90a4cad8498d9db5aad11709b04e0. LMArena is not affiliated with RouterPlex.

LMArena Text Leaderboard

2026-08-03 text_style_control 0fdff69b4fd7

generalRank #41499.4 raw99.2 percentile

Bradley-Terry ratings from LMArena's style-controlled text leaderboard. RouterPlex preserves the raw rating, source rank, confidence interval, vote count, and publish date. The displayed external score is the source-rank percentile within each source category.

Published 2026-08-03 / 23,042 source votes / retrieved 2026-08-07 / LMArena leaderboard dataset, licensed CC BY 4.0. RouterPlex includes only exact case-insensitive model-ID matches. Official leaderboard: https://arena.ai/leaderboard. Dataset: https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. Dataset commit: 4e52c8e709c90a4cad8498d9db5aad11709b04e0. LMArena is not affiliated with RouterPlex.

Your workload is the final benchmark

Test Claude Opus 4.6 yourself.

Use it directly, or put it into a blind head-to-head comparison.

Open playground Compare in Arena

Claude Opus 4.6 Benchmarks · RouterPlex