Anthropic: Claude Opus 5.5

Name: Anthropic: Claude Opus 5.5
Author: OpenRouter

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.

Context

Max output

128K

Input price

$4/1M tokens

Output price

$20/1M tokens

Capabilities

Show unsupported (4)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Details

Model IDanthropic/claude-opus-5.5

ProviderOpenRouter

CreatorAnthropic

Familyclaude-opus

License—

Status—

Typechat

Input modalitiestext, image

Output modalitiestext

Open weight—

Parameters—

Architecture—

Context window1M tokens

Max input—

Max output128K tokens

Reasoning tokens—

Knowledge cutoff—

Release date2026-09-22

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

Output

$20

Cache write

—

Cache read

$0.2

Batch in

—

Batch out

—

Family Comparison: claude-opus

Model	Caps	Perf	Speed	Context	Max out	Pricing
Anthropic: Claude Opus 5.5 (batch)	RTJJM	—	—	1M	128K	$2$10
Anthropic: Claude Opus 4.5 (batch)	RTJJM	—	—	200K	64K	$2.5$12.5
Anthropic: Claude Opus 4.6 (batch)	RTJJM	—	—	1M	128K	$2.5$12.5
Anthropic: Claude Opus 4.7 (batch)	RTJJM	—	—	1M	128K	$2.5$12.5
Anthropic: Claude Opus 4.8 (batch)	RTJJM	—	—	1M	128K	$2.5$12.5
Anthropic: Claude Opus 5 (batch)	RTJJM	—	—	1M	128K	$2.5$12.5
Anthropic: Claude Opus Latest	RTJJM	—	—	1M	128K	$4$20
Anthropic: Claude Opus 5.5	RTJJM	—	—	1M	128K	$4$20
Anthropic: Claude Opus 4.5	RTJJM	—	—	200K	64K	$5$25
Anthropic: Claude Opus 4.6	RTJJM	—	—	1M	128K	$5$25
Anthropic: Claude Opus 4.7	RTJJM	—	—	1M	128K	$5$25
Anthropic: Claude Opus 4.8	RTJJM	—	—	1M	128K	$5$25
Anthropic: Claude Opus 5	RTJJMSB	—	—	1M	128K	$5$25
Anthropic: Claude Opus 4.1 (batch)	RTJJM	—	—	200K	32K	$7.5$37.5
Anthropic: Claude Opus 4.8 (Fast)	RTJJM	—	—	1M	128K	$10$50
Claude Opus 5 (Fast)	RTJJM	—	—	1M	128K	$10$50
Anthropic: Claude Opus 4.1	RTJJM	—	—	200K	32K	$15$75
Anthropic: Claude Opus 4	RT	—	—	200K	32K	$15$75
Anthropic: Claude Opus 4.6 (Fast)	RTJJM	—	—	1M	128K	$30$150
Anthropic: Claude Opus 4.7 (Fast)	RTJJM	—	—	1M	128K	$30$150

API

GET/v1/models/openrouter/anthropic/claude-opus-5.5

Anthropic: Claude Opus 5.5

anthropic/claude-opus-5.5

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.

Changes · 2 entries

anthropic/claude-opus-5.5createca7a400Nov 2, 2026, 03:02 AM

anthropic/claude-opus-5.5create28ec4f5Sep 23, 2026, 06:40 AM