Anthropic: Claude Opus 4.6

Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective for large codebases, complex refactors, and multi-step debugging that unfolds over time. The ...

47.6 Coding Index*#45 Code Mode$5.00/1M input tokens
Release Date
January 26, 2026
Context Window
1,000,000 tokens
Max Output
128,000 tokens
Input Modalities
textimage

Try Anthropic: Claude Opus 4.6 in Kilo Code

Experience this model with the most popular open source coding agent. Free to start, pay only for AI usage. Use in popular IDEs like VS Code, JetBrains, command line, or cloud agents.

1.4M+

Downloads

500+

models supported

Free

to Start

Access 500+ models including Anthropic: Claude Opus 4.6 and many more in Kilo Code

Benchmarking Anthropic: Claude Opus 4.6

Coding Performance

Coding benchmarks and performance metrics for development tasks

Coding Benchmarks

Artificial Analysis Coding Index

47.6%

Overall coding capability score

SciCode

45.7%

Scientific computing & algorithms

TerminalBench Hard

48.5%

CLI & terminal command generation

LCR (Long Context Reasoning)

58.3%

Understanding large codebases

IFBench

44.6%

Instruction following accuracy

Performance metrics from Artificial Analysis

Real-World Usage

Real-world usage statistics from the Kilo Code community

Weekly Token Usage

Mode Rankings (Last Week)

Where this model ranks for each built-in mode

Architect

Plan and design before implementation

#41

Code

Write, modify, and refactor code

#45

Ask

Get answers and explanations

#40

Debug

Diagnose and fix software issues

#34

Orchestrator

Coordinate tasks across multiple modes

#25

Real-world metrics from the Kilo Code Leaderboard

Pricing

Cost per 1 million tokens

Input Tokens
$5.00
per 1M tokens
Output Tokens
$25.00
per 1M tokens

Example Cost

Analyzing a 10,000 line codebase (≈40k input tokens, 10k output tokens) costs approximately $0.4500

Coding Capabilities

Features and parameters relevant to coding tasks

Coding Features

Function Calling
Can call external functions/APIs
Tool Choice
Control over function selection
Structured Outputs
JSON schema validation
Reasoning Tokens
Extended thinking for complex problems

Pricing details from OpenRouter

Technical Details

Architecture and implementation specifications

Model ID
anthropic/claude-opus-4.6
Artificial Analysis Slug
claude-opus-4-6
Created
February 4, 2026
Tokenizer
Claude
Input Modalities
text, image
Context Window
1,000,000 tokens
Max Completion Tokens
128,000 tokens
Input Price
$5.00 per 1M tokens
Output Price
$25.00 per 1M tokens
Cache Read Price
$0.00 per 1M tokens
Cache Write Price
$0.00 per 1M tokens
Content Moderation
Enabled

Ready to try Anthropic: Claude Opus 4.6?

Install Kilo Code and start using Anthropic: Claude Opus 4.6 for your coding projects today. Choose from 500+ AI models with complete freedom.