Claude Opus 4.6
✓ VerifiedAnthropic's frontier reasoning model: 80.9% SWE-bench record, 1M token beta context, and adaptive thinking
About
Claude Opus 4.6, released February 5, 2026, is Anthropic's top-tier model for complex coding and agentic workflows. It holds the SWE-bench Verified record at 80.9% and features adaptive thinking for extended reasoning, a 200K standard context window with 1M token beta, and 128K max output tokens. Priced at $5 per 1M input tokens and $25 per 1M output tokens, it powers Claude Code's Agent Teams for autonomous multi-file development and supports 30+ hour task endurance for long-running sessions.
Key Features
- ✓80.9% SWE-bench Verified: world record for autonomous coding benchmarks
- ✓Adaptive thinking: extended reasoning mode for complex problem-solving
- ✓200K standard context with 1M token beta window
- ✓128K max output tokens for long-form generation
- ✓Powers Claude Code Agent Teams for collaborative autonomous development
- ✓30+ hour task endurance for long-running agentic sessions
- ✓Tool use/function calling with structured outputs
- ✓Computer use capabilities for GUI automation
- ✓Constitutional AI safety with ~3% hallucination rate
- ✓Available across Anthropic API, AWS Bedrock, Google Vertex AI, Azure AI Foundry
Pros & Cons
Pros
- Supports major platforms (API, Web, Desktop)
- Broad integrations (6+ connectors)
- SSO available for enterprise
Cons
- No free tier; paid plans only
- No BYOK; model choice dictated by vendor
Use Cases
- →Autonomous coding with SWE-bench-leading accuracy (80.9%)
- →Complex multi-file refactoring and codebase modernization
- →Long-running agentic coding tasks (30+ hour endurance)
- →Agent Teams: multiple Claude instances collaborating on tasks
- →Deep debugging, code review, and optimization
- →Enterprise AI assistants and workflow automation
- →Research, planning, and multimodal analysis with adaptive thinking
Technical Details
Languages
AI Models
Integrations
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Frequently Asked Questions
What is Claude Opus 4.6?
Claude Opus 4.6, released February 5, 2026, is Anthropic's top-tier model for complex coding and agentic workflows. It holds the SWE-bench Verified record at 80.9% and features adaptive thinking for extended reasoning, a 200K standard context window with 1M token beta, and 128K max output tokens. Priced at $5 per 1M input tokens and $25 per 1M output tokens, it powers Claude Code's Agent Teams for autonomous multi-file development and supports 30+ hour task endurance for long-running sessions.
How much does Claude Opus 4.6 cost?
Claude Opus 4.6 offers pay-per-use pricing. Plans include: API on-demand: $5 per 1M input tokens; $25 per 1M output tokens.
What programming languages does Claude Opus 4.6 support?
Claude Opus 4.6 supports 1+ programming languages including Any (via API).
What AI models does Claude Opus 4.6 use?
Claude Opus 4.6 is powered by claude-opus-4-6.
What platforms does Claude Opus 4.6 support?
Claude Opus 4.6 is available on API, Web, Desktop, iOS, Android.
What can Claude Opus 4.6 do?
Claude Opus 4.6 provides code completion, code generation, debugging, AI chat, agentic/autonomous mode. Key features include: 80.9% SWE-bench Verified: world record for autonomous coding benchmarks, Adaptive thinking: extended reasoning mode for complex problem-solving, 200K standard context with 1M token beta window.
Related Articles
Claude Code v2.1.120 → v2.1.123 (April 28–29, 2026): claude ultrareview in CI, Windows Without Git Bash, MCP alwaysLoad, plugin prune
Claude Code's late-April 2026 point releases (v2.1.120–v2.1.123) make /ultrareview runnable from CI as a non-interactive subcommand, drop the Git Bash requirement on Windows in favor of PowerShell, add an alwaysLoad option for MCP servers, and ship claude plugin prune for orphaned plugin dependencies.
Claude Code Week 17 (April 20–24, 2026): /ultrareview Public Preview, Session Recap, Custom Themes, Web Redesign
Claude Code Week 17 opened /ultrareview to public research preview, made session recap a first-class CLI feature, shipped custom themes you can build and ship in plugins, and redesigned Claude Code on the web with a sessions sidebar and drag-and-drop layout.
Claude Code Week 16 (April 13–17, 2026): Opus 4.7, xhigh Effort, Routines, /ultrareview, /usage, Native Binaries
Anthropic's Claude Code Week 16 update made Opus 4.7 the default on Max and Team Premium, added the xhigh effort level and /effort slider, shipped Routines and /ultrareview on the web, a /usage breakdown, and moved the CLI to native binaries.
Pricing and features change frequently—confirm on the vendor site.
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Pricing
API on-demand
$5 per 1M input tokens; $25 per 1M output tokens
- 200K context window (1M token beta available)
- 128K max output tokens
- Adaptive thinking for extended reasoning
- Available via Claude Pro, Max, Team, and Enterprise plans
- Partner access on AWS Bedrock, Google Vertex AI, and Azure AI Foundry
- Prompt caching and batch processing discounts
Company
- Name
- Anthropic
- Founded
- 2021
- Location
- San Francisco, CA
Links
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