Average Ratings 1 Rating

Total
ease
features
design

Average Ratings 1 Rating

Total
ease

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.

Description

Ox Alpha is an anonymous frontier-style reasoning model that emerged in August 2026 with a strong focus on software engineering and agentic AI applications. The organization responsible for developing the model has not publicly identified itself, and the model initially appeared under the identifier stealth/ox-alpha. It is built to reason through difficult problems rather than simply produce short conversational responses. Ox Alpha provides a 1,048,576-token context window, giving it enough capacity to process very large code repositories, documents, specifications, and conversation histories in a single context. Its maximum output length reaches 131,072 tokens, enabling unusually long and detailed responses when needed. The model can process text, images, and video as inputs while returning text-based results. Developers can use tool calling and structured JSON output to connect Ox Alpha with applications, APIs, and autonomous agent workflows. Its capabilities are particularly suited to long-running coding tasks such as debugging, refactoring, architecture analysis, and reasoning across multiple files without quickly losing context. Ox Alpha has attracted attention from developers because of its combination of large-context reasoning, multimodal input, agentic features, and currently anonymous origins.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

No images available

Integrations

Cheaper Inference
Claude Code
Hermes Agent
OpenClaw
Bash
Claude Agent SDK
Dart
DeepSeek Harness
Facebook
Gray Swan
HTML
Meta Model API
Model Context Protocol (MCP)
Muse Code
Odysseus
OpenAI Agents SDK
OpenCode Zen
Ruby
Solidity
omp

Integrations

Cheaper Inference
Claude Code
Hermes Agent
OpenClaw
Bash
Claude Agent SDK
Dart
DeepSeek Harness
Facebook
Gray Swan
HTML
Meta Model API
Model Context Protocol (MCP)
Muse Code
Odysseus
OpenAI Agents SDK
OpenCode Zen
Ruby
Solidity
omp

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
Free Version

Pricing Details

$0 per 1M tokens
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

Meta

Founded

2004

Country

United States

Website

meta.ai

Vendor Details

Company Name

Ox Alpha

Website

openrouter.ai/compare/stealth/ox-alpha

Alternatives

Claude Opus 5 Reviews

Claude Opus 5

Anthropic

Alternatives

GPT-5.4 Pro Reviews

GPT-5.4 Pro

OpenAI
Grok 4.6 Reviews

Grok 4.6

SpaceXAI
MiniMax M3 Reviews

MiniMax M3

MiniMax
GPT-5.4 Reviews

GPT-5.4

OpenAI
Claude Fable 5 Reviews

Claude Fable 5

Anthropic
Kimi K2.5 Reviews

Kimi K2.5

Moonshot AI