Claude Opus 4.1

Claude Opus 4.1

Anthropic
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About

Claude Opus 4.1 is an incremental upgrade to Claude Opus 4 that boosts coding, agentic reasoning, and data-analysis performance without changing deployment complexity. It raises coding accuracy to 74.5 percent on SWE-bench Verified and sharpens in-depth research and detailed tracking for agentic search tasks. GitHub reports notable gains in multi-file code refactoring, while Rakuten Group highlights its precision in pinpointing exact corrections within large codebases without introducing bugs. Independent benchmarks show about a one-standard-deviation improvement on junior developer tests compared to Opus 4, mirroring major leaps seen in prior Claude releases.

About

Lumen Outpost is Cosine’s targeted post-trained coding model, benchmarked against Kimi K2.6, its base model, GPT-5.5, GPT-5.4, and Gemini 3.1 Pro on highly complex, long-horizon coding tasks across 13 programming languages. The model is specialized not only for raw coding accuracy, but also for behavioral signals that matter in professional engineering workflows, including agent initiative, planning, scope discipline, action alignment, concise updates, and useful communication. Cosine’s benchmark report shows that highly targeted post-training transformed the base model’s capabilities, with Lumen Outpost outperforming Kimi K2.6 across Niche-Bench, Slop-Bench, Vibe-Bench, and cost per successful task. On Niche-Bench, an internal evaluation for niche, legacy, and environment-constrained programming languages, Lumen Outpost achieved a 53.9% score and led or tied in 9 of 13 assessed languages, with notable gains in Fortran, ABAP, Java, and Rust.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Advanced development and AI teams in need of a solution to accelerate coding, research, and complex problem-solving tasks

Audience

Engineering teams and AI coding platform developers that need a specialized coding model for long-horizon software tasks, niche languages, cleaner implementations, and agentic developer workflows

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$20 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
www.anthropic.com/news/claude-opus-4-1

Company Information

Cosine
United Kingdom
cosine.sh/blog/lumen-outpost-benchmark-report

Alternatives

Alternatives

GLM-5

GLM-5

Zhipu AI
Claude Opus 4.5

Claude Opus 4.5

Anthropic
Composer 2

Composer 2

Cursor
Claude Sonnet 4

Claude Sonnet 4

Anthropic
GLM-4.6

GLM-4.6

Zhipu AI

Categories

Categories

Integrations

Java
Rust
Brokk
C++
CSS
Devin
Elixir
GoLand
Julia
Model Context Protocol (MCP)
Node.js
ReSharper
React
Scalestack
Snowflake Cortex AI
Use AI
Verdent
Versuno
Visual Basic
Windsurf Editor

Integrations

Java
Rust
Brokk
C++
CSS
Devin
Elixir
GoLand
Julia
Model Context Protocol (MCP)
Node.js
ReSharper
React
Scalestack
Snowflake Cortex AI
Use AI
Verdent
Versuno
Visual Basic
Windsurf Editor
Claim Claude Opus 4.1 and update features and information
Claim Claude Opus 4.1 and update features and information
Claim Lumen Outpost and update features and information
Claim Lumen Outpost and update features and information