claude-fable-5
LM Arena overall rank: 1; rating: 1507.16; votes: 27,189.
Organization: anthropic; published September 2, 2026.
Model VS evidence index
Compare AI models with separate, traceable evidence
Model VS keeps user preference, objective benchmark results, and specialist task data separate. It does not create a synthetic score or declare an overall winner.
Sources and current snapshots
LM Arena dataset lmarena-ai/leaderboard-dataset was synced September 7, 2026; leaderboard published September 2, 2026. LiveBench release 2026-06-25 was synced September 7, 2026. Specialist data comes from Hugging Face official leaderboard API, synced September 7, 2026.
Method: Source records are shown in their native measurement systems. Rank, user-preference rating, benchmark scores, and task-specific percentages are not converted into one score.
Limits: Benchmark measurements are snapshots, not guarantees of real-world behavior. They can change with source updates and should be considered with task requirements, pricing, safety, and licensing.
Current LM Arena records
claude-opus-4-6-high
LM Arena overall rank: 2; rating: 1504.84; votes: 72,099.
Organization: anthropic; published September 2, 2026.
claude-fable-5.1-max
LM Arena overall rank: 3; rating: 1504.21; votes: 2,906.
Organization: anthropic; published September 2, 2026.
claude-opus-4-7-high
LM Arena overall rank: 4; rating: 1502.11; votes: 60,103.
Organization: anthropic; published September 2, 2026.
Current LiveBench records
claude-opus-4-5-20251101-thinking-64k-high-effort
LiveBench raw metrics: AMPS Hard 99.0; code completion 80.435; code generation 78.873.
Release: 2026-06-25; synced September 7, 2026.
claude-opus-4-6-thinking-auto-high-effort
LiveBench raw metrics: AMPS Hard 97.0; code completion 76.087; code generation 80.282.
Release: 2026-06-25; synced September 7, 2026.
claude-opus-4-7-xhigh-effort
LiveBench raw metrics: AMPS Hard 98.0; code completion 78.261; code generation 85.915.
Release: 2026-06-25; synced September 7, 2026.
claude-sonnet-4-6-thinking-auto-medium-effort
LiveBench raw metrics: AMPS Hard 76.0; code completion 78.261; code generation 80.282.
Release: 2026-06-25; synced September 7, 2026.
Current specialist benchmark records
ornith-ai/Ornith-1.5-397B
SWE-bench Verified: rank 1; % resolved 86.
Dataset: SWE-bench/SWE-bench_Verified; source: Ornith-1.5-397B model card; benchmark data updated August 16, 2026.
mindlab-research/Macaron-V1-Venti
SWE-bench Verified: rank 2; % resolved 85.6.
Dataset: SWE-bench/SWE-bench_Verified; source: Model Card; benchmark data updated August 16, 2026.
mindlab-research/Macaron-V1-Coding-Venti
SWE-bench Verified: rank 3; % resolved 85.6.
Dataset: SWE-bench/SWE-bench_Verified; source: Model Card; benchmark data updated August 16, 2026.
ornith-ai/Ornith-1.0-397B
SWE-bench Verified: rank 4; % resolved 82.4.
Dataset: SWE-bench/SWE-bench_Verified; source: Ornith-1.0-397B model card; benchmark data updated August 16, 2026.
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