Claude Opus 5.5

proprietary

For long-running agentic coding and knowledge work

Intelligence
Reasoning
Speed
Context
1M
Max output
128K
Input price
$4/1M tokens
Output price
$20/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDanthropic/claude-opus-5-5
Provider Perplexity
Creator Anthropic
Familyclaude-opus
Licenseproprietary
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1M tokens
Max input—
Max output128K tokens
Reasoning tokens—
Knowledge cutoff
Training data cutoff
Release date
Sourceofficial

Pricing

Input
$4
Output
$20
Cache write
—
Cache read
$0.2
Batch in
—
Batch out
—

Family Comparison: claude-opus

ModelContextMax outPricing
Claude Opus 5.51M128K$4$20
anthropic/claude-opus-4-5200K64K$5$25
anthropic/claude-opus-4-61M128K$5$25
anthropic/claude-opus-4-71M128K$5$25
anthropic/claude-opus-4-81M128K$5$25
Claude Opus 51M128K$5$25

API

GET/v1/models/perplexity/anthropic/claude-opus-5-5

Claude Opus 5.5

anthropic/claude-opus-5-5

For long-running agentic coding and knowledge work

Changes · 3 entries
anthropic/claude-opus-5-5createca7a400Nov 2, 2026, 03:02 AM
anthropic/claude-opus-5-5updateb2f45bfOct 29, 2026, 03:29 AM
nameanthropic/claude-opus-5-5→Claude Opus 5.5
anthropic/claude-opus-5-5create28ec4f5Sep 23, 2026, 06:40 AM