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Claude Opus 4.6

Multimodal
Anthropic

Claude Opus 4.6 is Anthropic's most intelligent model for building agents and coding. Significantly improved coding skills: more thorough planning, sustained agentic task support, reliable performance in large codebases, improved code review and debugging. Context window: 200K tokens by default, 1M tokens available in beta with premium pricing ($10/$37.50 per million input/output tokens at >200K). Up to 128K output tokens. New API features: adaptive thinking (the model decides when to use extended thinking), effort control (low/medium/high/max), context compression for long-running tasks. Leads on Terminal-Bench 2.0 (agentic coding), Humanity's Last Exam (multidisciplinary reasoning), GDPval-AA (knowledge work in finance, law), BrowseComp (information retrieval), DeepSearchQA (deep agentic search). Supports agent teams in Claude Code, Claude in Excel, and Claude in PowerPoint.

Key Specifications

Parameters
-
Context
1.0M
Release Date
February 4, 2026
Average Score
80.9%

Timeline

Key dates in the model's history
Announcement
February 4, 2026
Last Update
February 6, 2026
Today
July 7, 2026

Technical Specifications

Parameters
-
Training Tokens
-
Knowledge Cutoff
May 1, 2025
Family
-
Capabilities
MultimodalZeroEval

Pricing & Availability

Input (per 1M tokens)
$5.00
Output (per 1M tokens)
$25.00
Max Input Tokens
1.0M
Max Output Tokens
128.0K
Supported Features
Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning

Benchmark Results

Model performance metrics across various tests and benchmarks

Programming

Programming skills tests
SWE-Bench Verified
SWE-Bench Verified — solution real tasks from GitHub issues.Self-reported
78.0%

Reasoning

Logical reasoning and analysis
GPQA
Accuracy GPQA Diamond.Self-reported
91.3%

Other Tests

Specialized benchmarks
Vending-Bench 2
Final in USD. Simulation vending business for year work. Starting $5,000Self-reported
100.0%
GDPval-AA
Elo rating. Independent evaluation Artificial Analysis. Outperforms GPT-5.2 on ~144 Elo and Claude Opus 4.5 on 190 points.Self-reported
53.5%
AIME 2025
Accuracy Consensus@64 (most often occurring answer among 64 samples). Independent evaluation Artificial Analysis.Self-reported
100.0%
TAU2 Telecom
tool use (τ2-bench Telecom)Self-reported
99.0%
Graphwalks Parents >128K
GraphWalks Parents 256K 1M. F1 with context 1M, average from 5 attemptsSelf-reported
95.0%
MRCR v2 (8-needle)
OpenAI MRCR v2 256K 8-needles. Mean Match Ratio with 1M, average from 5 attemptsSelf-reported
93.0%
Humanity's Last Exam
Accuracy on HLE benchmark.Self-reported
46.2%
BrowseComp
Accuracy BrowseComp — by for search complex informationSelf-reported
72.0%
ARC-AGI v2
ARC-AGI-2 — reasoning throughSelf-reported
68.8%
CharXiv-R
CharXiv-R — reasoning about scientific from arXivSelf-reported
74.0%

License & Metadata

License
proprietary
Announcement Date
February 4, 2026
Last Updated
February 6, 2026

Compare Claude Opus 4.6

All comparisons

Articles about Claude Opus 4.6

Anthropic Surpasses OpenAI in Annual Recurring Revenue

Anthropic has reportedly crossed $25B ARR, overtaking OpenAI for the first time. Ramp data shows 73% of new enterprise customers now choose Claude.

7 min

Claude Code's Deny Rules Silently Bypassed After Source Code Leak

Security firm Adversa AI discovers that Claude Code's deny rules are silently disabled when a command contains 50+ subcommands, letting attackers steal credentials.

2 min
Agents of Chaos: When AI Agents Get OS-Level Access, Everything Breaks

Agents of Chaos: When AI Agents Get OS-Level Access, Everything Breaks

A 30-researcher team from Stanford, Harvard and MIT red-teamed autonomous AI agents built on OpenClaw. The results are alarming: data leaks, identity hijacks, and runaway loops.

8 min

Anthropic Accidentally Ships Claude Code's Entire Source Code

A misconfigured npm package exposes 512,000 lines of Claude Code's TypeScript source, revealing feature flags, system prompts, and a hidden Tamagotchi pet.

3 min
Congress Draws a Line on AI Weapons After Anthropic-Pentagon Standoff

Congress Draws a Line on AI Weapons After Anthropic-Pentagon Standoff

Senate Democrats introduce bills to ban autonomous AI weapons and mass surveillance after the Pentagon blacklisted Anthropic. What the legislation says and why it matters.

8 min
Amodei Calls Brockman's $25M Trump Donation 'Evil'

Amodei Calls Brockman's $25M Trump Donation 'Evil'

In a leaked internal letter, Anthropic CEO Dario Amodei condemned OpenAI president Greg Brockman's $25 million donation to a Trump super PAC and accused rivals of 'dictator-style praise.'

3 min
Anthropic May Have Had an Architectural Breakthrough

Anthropic May Have Had an Architectural Breakthrough

Weeks-old rumors of a fundamental AI architecture discovery now point to Anthropic, fueled by the Mythos leak showing capabilities far beyond incremental scaling improvements.

3 min
Anthropic Accidentally Leaked Its Most Dangerous AI Model

Anthropic Accidentally Leaked Its Most Dangerous AI Model

Security researchers found nearly 3,000 unpublished Anthropic documents in a public data cache — including details on Claude Mythos, a new model with unprecedented cybersecurity capabilities.

4 min
Judge Blocks Pentagon's 'Supply Chain Risk' Label on Anthropic

Judge Blocks Pentagon's 'Supply Chain Risk' Label on Anthropic

A federal judge in San Francisco barred the Department of Defense from designating Anthropic as a supply chain risk, calling the move 'arbitrary and capricious.'

3 min
Every Frontier AI Model Scored Under 1% on ARC-AGI-3. Humans Got 100%.

Every Frontier AI Model Scored Under 1% on ARC-AGI-3. Humans Got 100%.

Chollet's new benchmark drops the same week Jensen Huang declared AGI. GPT-5.4 scored 0.26%. Claude Opus 4.6 scored 0.25%. The gap with humans is 99+ points.

9 min

Chollet to Jensen Huang: 'You Don't Have AGI. You Have Expensive Autocomplete.'

The ARC-AGI creator fires back at NVIDIA's AGI claims with a benchmark that every frontier model fails. His argument is simple: if humans can do it cold, AGI should too.

2 min
Claude Can Now Control Your Computer. Anthropic Says Trust It — Mostly.

Claude Can Now Control Your Computer. Anthropic Says Trust It — Mostly.

Anthropic shipped computer use for Claude Code and Cowork — mouse, keyboard, browser, files. Plus a new Auto Mode that skips permission prompts. macOS only.

7 min

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