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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.

← Integrity Index

APEX-Agents

APEX-Agents

Rank #1 of 51 · 39 models scored · top score 49.6

AINTEGRITY 100 / 100

unknown

Strongest on discrimination, weakest on saturation headroom. Caveat: the public test set leaves contamination on the table.

consistent harnesspublic test set

Headroom to ceiling

50.4 headroomtop 49.6ceiling 100

Score distribution

median 17.2Gemini 3.5 Flash 49.602652

State of the art over time

0265249.620242026

Integrity breakdown

Weighted composite. Each signal is computed from the source-backed leaderboard below.

Discrimination30%100

Does it still separate models?

Saturation headroom30%99

How far from ceiling / clustered at the top?

Contamination resistance15%100

Public vs held-out; training-leak risk.

Harness comparability15%100

Apples-to-apples, or mixed / vendor-optimized?

Freshness10%100

How old is the benchmark?

Leaderboard

#ModelScoreEvidenceMeasured
1Gemini 3.5 Flash49.6unverified2026-05-19
2Claude Fable 545unverified2026-06-09
3Claude Opus 4.842.5unverified2026-05-28
4GPT-5.538.4unverified2026-04-23
5GPT-5.435.9unverified2026-03-05
6GLM-5.235.6unverified2026-06-16
7GPT-5.234.3unverified2025-12-11
8Claude Opus 4.733.9unverified2026-04-16
9Gemini 3.1 Pro33.5unverified2026-02-19
10Claude Opus 4.631.7unverified2026-02-05
11GPT-5.3 Codex31.7unverified2026-02-05
12GPT-5.4 Mini24.6unverified2026-03-17
13Gemini 3 Flash24unverified2025-12-17
14Claude Sonnet 4.623.7unverified2026-02-17
15Kimi K2.618.9unverified2026-04-20
16Gemini 3 Pro18.4unverified2025-11-18
17Claude Opus 4.518.4unverified2025-11-24
18GPT-518.3unverified2025-08-07
19GPT-5.117.5unverified2025-11-13
20o317.2unverified2024-12-20
21GLM-517.2unverified2026-02-11
22GPT-5.4 Nano16.9unverified2026-03-17
23Grok 415.2unverified2025-07-09
24Kimi K2.514.4unverified2026-02-02
25Qwen 3.5 Plus (hosted 397B-A17B)13.6unverified2026-02-16
26Gemini 3.1 Flash-Lite12.8unverified2026-03-03
27Claude Sonnet 49.3unverified2025-05-22
28Claude Haiku 4.58.9unverified2025-10-15
29DeepSeek-V3.27unverified2025-12-01
30Gemini 2.5 Pro (Jun 2025)6.6unverified2025-06-05
31MiniMax-M2.56.2unverified2026-02-12
32gpt-oss-120b4.7unverified2025-08-05
33Kimi K2 Thinking4unverified2025-11-06
34GLM-4.73.1unverified2025-12-22
35GLM-4.63unverified2025-09-30
36Grok 32.1unverified2025-02-17
37Gemini 2.5 Flash (Jun 2025)1.8unverified2025-06-17
38o11.1unverified2024-12-05
39GPT-4o (Nov 2024)1.1unverified2024-05-13

At a glance

Models scored
39
Top model
Gemini 3.5 Flash
Top score
49.6
Score spread
48.5
Headroom
50.4

Benchmark context

Task type
agentic
Metric
normalized performance in Epoch CSV, rendered as accuracy (%)
Score ceiling
100
Human baseline
unknown
Test-set privacy
unknown
Construction
unknown
Key assumptions
unknown
Limitations
unknown
Contamination history
unknown
Harness notes
Epoch CSV reports model, model version, performance, optimized flag, score source, benchmark release date, and model date.
Authors
unknown
Released
unknown
License
CC BY 4.0
Source
epoch.ai/data/eci_benchmarks.csv

Provenance

39 source records · scores from epoch_benchmarks. Every fact on this page is evidence-linked.

Follow the record

Integrity neighbors

  • Chess PuzzlesA · 100
  • HLEA · 100
  • SimpleQA VerifiedA · 100

Top models here

  • Gemini 3.5 Flash49.6
  • Claude Fable 545
  • Claude Opus 4.842.5
  • GPT-5.538.4
  • GPT-5.435.9

Head-to-head

  • Gemini 3.5 Flash vs Claude Fable 5
  • Gemini 3.5 Flash vs Claude Opus 4.8
  • Claude Fable 5 vs Claude Opus 4.8