Meta Unveils Muse Code: New AI Tool for Coding Efficiency

WHO:

TechCrunch - Meta, led by CEO Mark Zuckerberg, launched Muse Code.

VentureBeat - Meta CEO Mark Zuckerberg announced the release on X (formerly Twitter) under the handle @finkd.

WHAT:

VentureBeat - Muse Code is designed to handle complete software engineering tasks across large repositories, including planning changes, writing code, and validating results.

VentureBeat - Muse Code's persistent background agents allow it to carry out next steps autonomously without re-exploring the repository.

VentureBeat - Muse Code includes a local append-only event log that ensures the runtime is replay-exact and restart-safe after a crash.

VentureBeat - The contributor tier for Muse Spark 1.2 is priced at $0.10 per million input tokens and $0.20 per million output tokens, significantly cheaper than the standard tier.

VentureBeat - Muse Spark 1.2 was co-trained with Muse Code, focusing on long-horizon, repository-scale work, and includes a self-improvement loop for better performance.

VentureBeat - The pricing structure for Muse Spark 1.2 includes a standard tier with rate limits of 3,000 requests and 4 million tokens per minute, while the contributor tier has tighter limits of 60 requests per minute.

VentureBeat - Muse Code utilizes async background agents that stay active for the entire session, allowing for parallel work without re-exploring the repository.

VentureBeat - Muse Spark 1.2 was co-trained with Muse Code, focusing on long-horizon, repository-scale work.

VentureBeat - Muse Code is available in beta today; Muse Spark 1.2 is live in the Meta Model API with expanded global access.

VentureBeat - Muse Code is designed to operate with persistent async background agents that remain active throughout the session, avoiding redundant information gathering.

VentureBeat - Muse Code can build features in parallel, with testing showing it built six features for a game simultaneously without collisions.

VentureBeat - Muse Spark 1.2 is priced at $1.25 per million input tokens and $4.25 per million output tokens, while the contributor tier is priced at $0.10 per million input tokens and $0.20 per million output tokens.

VentureBeat - Muse Code is designed to handle complete software engineering tasks across large repositories, including planning changes, writing code, and validating results.

VentureBeat - Muse Code's persistent background agents allow it to carry out next steps autonomously without re-exploring the repository.

VentureBeat - In testing, Muse Code was able to build six features for a game simultaneously without collisions.

VentureBeat - Muse Spark 1.2 was co-trained with Muse Code, focusing on long-horizon, repository-scale work, and includes a self-improvement loop for better performance.

VentureBeat - The contributor tier for Muse Spark 1.2 is priced at $0.10 per million input tokens and $0.20 per million output tokens, significantly cheaper than the standard tier.

TechCrunch - Meta released Muse Code, an AI coding agent designed to handle complex software tasks.

VentureBeat - Muse Code is a terminal-based AI coding agent now in beta, capable of planning changes, writing code, and validating results across large repositories.

MarkTechPost - Muse Code features persistent async background agents that remain active throughout the session, avoiding redundant information gathering.

Techmeme - Muse Code is powered by the new Muse Spark 1.2 model, which is priced at $1.25 per million input tokens and $4.25 per million output tokens.

WHERE:

VentureBeat - Muse Code can be installed on macOS or Linux.

WHEN:

VentureBeat - Muse Code was released in beta today.

WHY:

VentureBeat - The launch of Muse Code marks Meta's serious entry into the AI coding market, competing with established products from Anthropic and OpenAI.

TechCrunch - Meta aims to improve coding efficiency and reduce latency for developers.

HOW:

VentureBeat - Muse Code includes a local append-only event log that ensures the runtime is replay-exact and restart-safe after a crash.

VentureBeat - The contributor tier has tighter limits of 60 requests per minute compared to the standard tier's 3,000 requests per minute.

VentureBeat - Muse Code includes a local append-only event log that ensures the runtime is replay-exact and restart-safe after a crash.

VentureBeat - Muse Code utilizes async background agents that stay active for the entire session, allowing for parallel work without re-exploring the repository.

MarkTechPost - The coding agent includes a local append-only event log that ensures the runtime is replay-exact and restart-safe after a crash.

VentureBeat - Muse Spark 1.2 was co-trained with Muse Code, focusing on long-horizon, repository-scale work.

(UPDATED August 6, 2026 11:20 UTC)

Muse Code has launched in beta, designed to handle comprehensive software engineering tasks across large repositories, including planning changes, writing code, and validating results. It features persistent background agents that autonomously carry out next steps without needing to re-explore the repository, along with a local append-only event log to ensure reliability after crashes. Additionally, Muse Spark 1.2 is now live in the Meta Model API, offering a contributor tier priced at $0.10 per million input tokens, significantly cheaper than the standard tier, which allows for 3,000 requests and 4 million tokens per minute.

(UPDATED August 6, 2026 01:14 UTC)

Muse Code is a new tool that operates with persistent async background agents, allowing it to avoid redundant information gathering while building features in parallel, successfully creating six features for a game at the same time without any collisions. The pricing for Muse Spark 1.2 is set at $1.25 per million input tokens and $4.25 per million output tokens, with a contributor tier available at $0.10 per million input tokens and $0.20 per million output tokens. Additionally, the contributor tier has stricter limits, allowing only 60 requests per minute, compared to the standard tier's allowance of 3,000 requests per minute.

(UPDATED August 5, 2026 23:51 UTC)

Muse Code has been introduced as a powerful tool for software engineering, capable of managing entire projects by planning changes, writing code, and validating results across large repositories. Its innovative persistent background agents allow it to autonomously execute next steps without needing to re-explore the repository, and in testing, it successfully built six game features simultaneously without any collisions. Additionally, Muse Spark 1.2, which was co-trained with Muse Code, features a self-improvement loop for enhanced performance and offers a contributor tier priced at $0.10 per million input tokens and $0.20 per million output tokens, making it a cost-effective option compared to the standard tier.

(UPDATED August 5, 2026 22:11 UTC)

Meta has just launched Muse Code, an AI coding agent designed to tackle complex software tasks, as announced by CEO Mark Zuckerberg on X. This terminal-based tool, now in beta, is capable of planning changes, writing code, and validating results across large repositories, and it features persistent async background agents that remain active throughout the session. Muse Code, powered by the new Muse Spark 1.2 model, is available for installation on macOS or Linux, marking Meta's significant entry into the AI coding market.