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tensor.news grades benchmarks and tags model claims by evidence status. Every fact carries a source record and provenance. Scores are framed as task performance under a disclosed harness, never as deployed capability.

← Models

Claude 2.1

Anthropic·released 2023-11-21

independently reproduced

Scored on 4 benchmarks. 50% of its scores are independently reproduced — the rest are self-reported or unverified.

4
Benchmarks scored
0
SOTA leads
64.67
Best score
50%
Reproduced
2 of 4

Benchmark fingerprint

Every score, ranked, colored by evidence status.

  • MMLU
    64.67
  • GPQA diamond
    10.61
  • WeirdML
    7.06
  • OTIS Mock AIME 2024-2025
    1.85

All benchmark scores

BenchmarkScoreEvidence statusMeasured
MMLU64.67accuracy (%)unverified· optimized2023-11-21
GPQA diamond10.61accuracy (%)reproduced· optimized2023-11-21
WeirdML7.06accuracy (%)unverified2023-11-21
OTIS Mock AIME 2024-20251.85accuracy (%)reproduced· optimized2023-11-21
4 source records · epoch_benchmarks. Every score is evidence-linked.

Follow the record

More from Anthropic

  • Claude Fable 599.72
  • Claude Opus 4.898.33
  • Claude Opus 4.797.8
  • Claude Sonnet 4.597.73
  • Claude Haiku 4.596.36
  • Claude Opus 4.694.44