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Description

Composer 1.5 is the newest agentic coding model from Cursor that enhances both speed and intelligence for routine coding tasks, achieving a remarkable 20-fold increase in reinforcement learning capabilities compared to its earlier version, which translates to improved performance on real-world programming problems. This model is crafted as a "thinking model," generating internal reasoning tokens that facilitate the analysis of a user's codebase and the planning of subsequent actions, enabling swift responses to straightforward issues while engaging in more profound reasoning for intricate challenges. Additionally, it maintains interactivity and efficiency, making it ideal for daily development processes. To address prolonged tasks, Composer 1.5 features self-summarization, which allows the model to condense information and retain context when it hits limits, thus preserving accuracy across a variety of input lengths. Internal evaluations indicate that Composer 1.5 outperforms its predecessor in coding tasks, particularly excelling in tackling more complex problems, further enhancing its utility for interactive applications within Cursor's ecosystem. Overall, this model represents a significant advancement in coding assistance technology, promising to streamline the development experience for users.

Description

Muse Spark 1.2 is Meta’s newest coding-focused model, released alongside Muse Code as part of Meta’s AI developer platform. The model improves on Muse Spark 1.1 with stronger code generation, complex debugging, codebase understanding, and full developer workflow performance. Muse Spark 1.2 powers Muse Code, a terminal coding agent that can plan changes, write code, validate results, and coordinate persistent background subagents. The model was co-trained with Muse Code so it performs well inside the agentic coding runtime and tool environment. Its training included scaled coding compute, broader training environment diversity, rejection-sampled harness trajectories, recipe optimizations, and Muse Code toolset integration. Muse Spark 1.2 is designed for long-horizon coding tasks such as whole-repository generation, large end-to-end projects, auto-research, and extended optimization work. It uses planning to sequence work, goal conditioning to stay aligned with the user’s objective, and context compaction to preserve useful knowledge over long sessions. The model also benefits from a self-improvement loop where Muse Spark 1.1 generated challenging coding environments and instruction-following templates for training. By combining coding specialization, agentic workflow support, long-horizon training, subagent compatibility, and Meta Model API availability, Muse Spark 1.2 helps developers build, debug, and optimize software more effectively.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

.NET No 
Bash No 
Cheaper Inference No 
Continue No 
Facebook No 
Facebook Messenger No 
HTML No 
Kubernetes No 
LangChain No 
Lua No 
Meta AI No 
Model Context Protocol (MCP) No 
Muse Spark No 
OpenCode No 
R No 
Rust No 
SQL No 
Scala No 
Swift No 
TypeScript No 

Integrations

.NET Yes 
Bash Yes 
Cheaper Inference Yes 
Continue Yes 
Facebook Yes 
Facebook Messenger Yes 
HTML Yes 
Kubernetes Yes 
LangChain Yes 
Lua Yes 
Meta AI Yes 
Model Context Protocol (MCP) Yes 
Muse Spark Yes 
OpenCode Yes 
R Yes 
Rust Yes 
SQL Yes 
Scala Yes 
Swift Yes 
TypeScript Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version Yes 

Pricing Details

$1.25 per 1M tokens (input)
$1.25 per million tokens in input, and $4.25 per million tokens of output
Free Trial Yes 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Cursor

Founded

2023

Country

United States

Website

cursor.com/blog/composer-1-5

Vendor Details

Company Name

Meta

Founded

2004

Country

United States

Website

meta.ai

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