Anthropic: Claude Opus 4.7

anthropic/claude-opus-4.7 · AnthropicNot yet established

Declared family: Claude
Declared tokenizer tag: Claude
Entered catalogue: 16 April 2026
Last tested: 3 September 2026
Evidence confidence: Unknown

Identity statement

Anthropic: Claude Opus 4.7 has a clean measured fingerprint that currently sits alone: no other measured model shares its signature.

What we checked

Four different kinds of evidence, and what each one showed

We checked	What we found	Where it came from
How it counts tokens	Counted, using the 49 strings that came back reliably	we measured it
How its API is set up	Set up identically to 1 other listing, field for field	api_5d3cdea0
How much it can read and write	Reads up to 1,000,000 tokens at once, writes up to 128,000	its own listing
Whether it thinks before answering	Reasons when asked to, at max, xhigh, high, medium, low, high by default	its own listing
Who served our requests	Claude Platform on AWS	we measured it, 3 September 2026

Closest measured models

Agreement across the mutually clean test strings

Anthropic: Claude 3 Haikuanthropic/claude-3-haiku36/49 · 73%Anthropic: Claude Haiku 4.5anthropic/claude-haiku-4.536/49 · 73%Anthropic: Claude Sonnet 4.6anthropic/claude-sonnet-4.636/49 · 73%Anthropic: Claude Sonnet 4.5anthropic/claude-sonnet-4.536/49 · 73%Anthropic: Claude Sonnet 4anthropic/claude-sonnet-436/49 · 73%Anthropic: Claude Opus 4.6anthropic/claude-opus-4.636/49 · 73%

Click a row to open the full comparison.

The measured fingerprint

What each test string cost this model, in tokens

We sent Anthropic: Claude Opus 4.7 fifty short pieces of text and recorded what each one cost it in tokens. The bars below are those costs. Two models built on the same tokenizer produce the same bars; a model built on a different one produces a different set, which is what makes this a fingerprint.

All 50 rows, 1 excluded as corrupt

English and whitespace

en-prose24

en-long28

spaces-204

spaces-606

tabs-204

newlines-204

mixed-ws9

Digits

digits-94

digits-125

digits-3011

digits-sep8

float-long10

CJK

zh-common19

zh-long25

zh-rare21

ja-kana12

ja-kanji17

ko20

Other scripts

ru14

ar21

he18

hi23

th25

el22

Emoji

emoji-basic11

emoji-skin26

emoji-zwj-family15

emoji-zwj-x343

emoji-flags25

emoji-prof28

Rare Unicode

math47

boxdraw29

combining6

cjk-ext-b17

surrogates55

zalgo36

rtl-mix11

Code

py-code30

py-indent19

json29

html18

regex64

camel16

snake14

Repetition and encodings

rare-word-x556

repeat-tok61

base64x

hex18

url26

uuid28

An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 11 prompt tokens.

Declared record

What the catalogue claims about this model

Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents. Building on the coding and agentic strengths of Opus 4.6, it delivers stronger performance on...

Modalities: text+image+file->text
Declared tokenizer: Claude
Prompt price: $5.00 / M tokens
Completion price: $25.0 / M tokens

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity

defaults: {}

Catalogue entry

History

Every observation, kept as taken

16 April 2026Enters the OpenRouter catalogue declared as Claude.
3 September 2026Fingerprinted in the YFarmX catalogue sweep · 49 of 50 strings measured clean.