aiaimodel.cards

Claude Opus 4.6

Language modelPrevious generationCard summarized

Improves on its predecessor's coding skills

Active (legacy) · retires not before 5 Feb 2027● Re-checked 12 Oct 2026 · 143 facts · 0 corrections · 2 unconfirmedSource: System Card: Claude Opus 4.6 (213 pp)

Use it via API

$2,940 /month
$58.80 per 1K requests
RAG over docs: 12K in · 600 out · 50K requests/mo · 30% cached · change
Code exampleCompare

Where to call it

  • Claude APIclaude-opus-4-6
  • Amazon Bedrockanthropic.claude-opus-4-6-v1
  • Google Vertex AIclaude-opus-4-6
  • Microsoft Foundry / Azureclaude-opus-4-6

Supports

  • Image input
  • PDF input
  • Structured outputs
  • Reasoning control
  • Tool calling
  • Web search
  • Prompt caching
  • Batch API
Full feature support

Good for

  • Software engineering and agentic tasks (Terminal-Bench 2.0 65.4%)
  • Long-context reasoning
  • Knowledge work: financial analysis, document creation, multi-step research

Watch out for

Replaced by

Claude Opus 5.5$4.00 / $20.00

This model: $5.00 / $25.00 per 1M tokens

Compare side by side

Overview

Anthropic · 11Opus, front

Opus 4.6

Improves on its predecessor's coding skills

Cost
$5.00 in
Context
1M
Input / output
$5.00 / $25.00
Max output
128K
Knows up to
May 2025
Released
5 Feb 2026

A frontier model with strong software engineering, agentic and long-context reasoning skills, and knowledge work such as financial analysis, document creation and multi-step research. In almost all cases an upgrade on Claude Opus 4.5; deployed under the ASL-3 Standard. p.3, p.9

claude-opus-4-6
Input / output per 1M
$5.00 / $25.00
Context window
1M
Max output
128K
Knows up to
May 2025
Reasoning
Adaptive (extended deprecated)
Weights
Closed

About this card. A model card is the maker's own account of a model: what it's for, how it was trained and tested, and where it falls short. This page condenses Anthropic's System Card: Claude Opus 4.6. Every claim carries its source page.