> Claude 3 Opus is a closed AI model from Anthropic, released 4 Mar 2024. Index score 105 (GPT-4 = 100), rank 175 of 229 ranked models.

[Models](https://themodelindex.org/models/) /[Anthropic](https://themodelindex.org/labs/anthropic/)

# Claude 3 Opus

Anthropic

Released 4 Mar 2024

Closed

Flagship

Date verified

[Compare](https://themodelindex.org/compare/claude-3-opus-vs-mixtral-8x7b/) [Announcement](https://www.anthropic.com/news/claude-3-family)

10593–116

Index score

#175 of 229 models

2/ 8

Core tests taken

2 of 6 areas · plus 10 anchor tests

Frontier

Versus the frontier at release

set or matched the record

Replaced by [Claude Opus 4](https://themodelindex.org/models/claude-opus-4/)

–

Price per million tokens

no public API price found

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Context window

tokens it reads at once

## Where it sits · on the frontier

_Chart: Model Index score of every scored model since late 2022, with the best closed and best open model over time_

GPT-4 Turbo reached this score 4 months earlier.

## Test results · by area · tick = best by any model

Show 9 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

47%

Humanity's Last Exam

no result

Maths

evidence

FrontierMath T1-3

no result

Coding

evidence

SWE-bench Verified

no result

Terminal-Bench

no result

Agents

evidence

APEX-Agents

no result

Novel problems

no evidence yet

ARC-AGI-2

no result

Long tasks

evidence

METR time horizon

4.0 min

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

## What others say · rank on each leaderboard

The Model Index

independent tests, our method

#175

of 219 · 105

Epoch Capabilities Index

overall capability from many benchmarks

#148

of 239 · 126.9

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

## Best at · top three among current models

Replaced by Claude Opus 4; it no longer leads any category among current models.

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

## Where to use it · prices checked 1 Oct 2026

#### From the lab

Claude

app · subscription

↗

Claude API

API

↗

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

## Facts and sources

Released

4 Mar 2024

Announcement

[anthropic.com ↗](https://www.anthropic.com/news/claude-3-family)

Release entry

Claude 3 (Opus/Sonnet; Haiku 03-13)

Scored as

Claude 3 Opus

Artificial Analysis index

–

Output speed

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Hugging Face

closed weights

## Anthropic releases · around this one

Claude Instant 1.2

Closed

9 AUG 2023

Claude 2.1

Closed

21 NOV 2023

index 93

Claude 3 Opus

Closed

4 MAR 2024

index 105

Claude 3 Sonnet

Closed

4 MAR 2024

index 95

Claude 3.5 Sonnet (Jun 2024)

Closed

20 JUN 2024

index 111

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Source: https://themodelindex.org/models/claude-3-opus/ · The Model Index · data as of 2026-10-01