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Claude Opus 5 in fedi-index

The score in every slice, what it is made of, value, local run and history.

fedi-index · General

S 1,493 ±7

Percentile 99 · #3

People prefer / Solves tasks

1,492 / 1,494

Human votes vs benchmarks, Elo-eq

Value

+59

$10 per 1M tokens, median of 29 providers · vendor $10

On your hardware

Closed weights: cloud only.

Score decomposition

S General 1,493 [1,486–1,500] Percentile 99 · #3 · components: 9
Source Component Value Elo-eq Weight Measured Variant
Epoch AI eci 163 ±1.62 1,539 ±13 26.9% 2026-07-24 —
LMArena text/overall 1,507 ±2.52 1,507 ±2 17.2% 2026-10-02 max
LMArena text/hard_prompts 1,526 ±2.92 1,509 ±3 17.2% 2026-10-02 max
LMArena text/instruction_following 1,516 ±3.56 1,523 ±3 8.4% 2026-10-02 max
LMArena text/expert 1,559 ±4.29 1,524 ±4 8.4% 2026-10-02 high
Epoch AI simpleqa_verified decay ×0.61 0.60 ±0.02 1,486 ±5 4.3% 2026-08-10 max
LMArena text/longer_query 1,514 ±3.30 1,507 ±3 4.2% 2026-10-02 max
LMArena text/multi_turn 1,500 ±4.88 1,489 ±4 4.1% 2026-10-02 max
Epoch AI gpqa_diamond decay ×0.26 0.94 ±0.01 1,476 ±7 1.7% 2026-07-24 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Coding 1,474 [1,471–1,477] Percentile 99 · #5 · components: 2 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena webdev/overall 1,695 ±3.30 1,505 ±1 46.3% 2026-10-01 max
LMArena text/coding 1,534 ±3.95 1,500 ±4 44.0% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Agents 1,475 [1,469–1,481] Percentile 93 · #5 · components: 2
Source Component Value Elo-eq Weight Measured Variant
LMArena agent/overall 0.09 ±0.01 1,497 ±3 66.1% 2026-10-02 high
τ²-bench (Sierra) tau2/banking_knowledge decay ×0.76 0.49 ±0.05 1,495 ±8 26.7% 2026-08-03 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

S Math 1,489 [1,481–1,498] Percentile 99 · #4 · components: 3
Source Component Value Elo-eq Weight Measured Variant
LMArena text/math 1,531 ±8.33 1,519 ±8 48.2% 2026-10-02 max
Epoch AI frontiermath_t1_3 decay ×0.86 0.86 ±0.02 1,506 ±4 32.6% 2026-07-24 max
Epoch AI frontiermath_t4 decay ×0.86 0.73 ±0.07 1,509 ±11 11.5% 2026-07-24 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Vision 1,479 [1,475–1,483] Percentile 99 · #2 · components: 3 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena vision/overall 1,321 ±3.49 1,494 ±3 63.1% 2026-10-02 high
LMArena vision/ocr 1,330 ±3.65 1,500 ±4 15.6% 2026-10-02 high
LMArena vision/diagram 1,350 ±5.22 1,508 ±5 15.0% 2026-10-02 high

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Writing 1,497 [1,491–1,502] Percentile 98 · #6 · components: 2 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/creative_writing 1,491 ±4.38 1,521 ±4 61.6% 2026-10-02 max
LMArena text/longer_query 1,514 ±3.30 1,507 ±3 32.2% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: 繁體中文 1,493 [1,483–1,503] Percentile 99 · #3 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/chinese 1,576 ±6.84 1,514 ±5 93.4% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: Deutsch 1,482 [1,460–1,503] Percentile 100 · #1 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/german 1,525 ±14 1,510 ±12 90.6% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: English 1,480 [1,474–1,487] Percentile 99 · #4 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/english 1,505 ±3.31 1,499 ±4 93.8% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: Español 1,482 [1,463–1,500] Percentile 100 · #1 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/spanish 1,517 ±11 1,507 ±10 91.6% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: Français 1,474 [1,461–1,488] Percentile 100 · #1 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/french 1,519 ±8.10 1,496 ±7 92.8% 2026-10-02 high

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: 日本語 1,488 [1,472–1,503] Percentile 100 · #1 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/japanese 1,513 ±11 1,512 ±8 92.4% 2026-10-02 high

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: 한국어 1,499 [1,482–1,517] Percentile 100 · #1 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/korean 1,519 ±13 1,526 ±10 91.8% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: Polski 1,483 [1,462–1,505] Percentile 99 · #2 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/polish 1,524 ±14 1,512 ±12 90.7% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

A Language: Русский 1,484 [1,475–1,493] Percentile 98 · #5 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/russian 1,508 ±5.42 1,504 ±5 93.5% 2026-10-02 max

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

History

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Model 2026-10
Claude Opus 5 1,493 S

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fedi-index: Claude Opus 5

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