Meta releases Muse Code in beta, a terminal coding agent powered by Muse Spark 1.2, a coding-focused model priced at $1.25/1M input and $4.25/1M output tokens

Meta is rolling out its first coding agent called Muse Code as the company tries to challenge leading AI labs Anthropic and OpenAI.

CNBC 2026-08-06 Jonathan Vanian

Context & Ripple Effects

Muse Code follows Meta's July public API preview for the more coding-capable Muse Spark 1.1 and extends the Muse family beyond its earlier use in Meta AI queries and shopping mode. The launch turns Muse Spark 1.2 into a terminal-facing product for developers, while Meta is also testing a lower-priced contributor tier that trades prompt use for training access.

First-order effects

Meta enters the terminal coding-agent market with Muse Code, putting its own coding model directly in competition for developer workflows with Anthropic and OpenAI.
Muse Spark 1.2's stated input and output token prices give prospective Muse Code users a concrete cost basis for evaluating the underlying model.

Second-order effects

Meta's contributor tier creates a second adoption path for Muse Spark 1.2: price-sensitive users can accept prompt use for training in exchange for substantially lower token rates.
Anthropic and OpenAI face competition not only on coding-agent capability but on the economics of the model serving those agents.

Third-order effects

Coding-model providers are increasingly packaging models as task-specific agents rather than leaving developers to assemble model access and terminal workflows separately.
If contributor pricing is carried into agent products, consent to training-data use may become a more explicit lever in agentic unit economics.

The trend: AI labs are moving coding models from API access into dedicated developer agents, with token pricing and data-use terms becoming part of the product competition.

Discussion

@finkd Mark Zuckerberg on x
Releasing Muse Code in beta today. It's a terminal coding agent that takes on complete software engineering tasks across large repos: planning changes, writing code, validating the results. Powered by Muse Spark 1.2, a coding-focused model update. [image]
@luckeyfaraday Luckey Faraday on x
@finkd Will Muse Code be open source?
@tianheyu @tianheyu on x
We've been quickly iterating on improving Muse Spark's coding agent capability since the 1.1 launch less than a month ago and produced Muse Spark 1.2 + our own harness Muse Code with enhanced coding performance in daily software engineering, long-horizon tasks, auto-research and
@artificialanlys @artificialanlys on x
Meta has released Muse Spark 1.2. It's their third release in four months and scores 54 on the Artificial Analysis Intelligence Index, significantly improving agentic knowledge work capabilities over prior releases and putting Meta next to SpaceXAI in a tie for third place among…
@finkd Mark Zuckerberg on x
@luckeyfaraday I'll have more to share on that soon.
@quxiaoyin Xiaoyin Qu on x
Glad to see my ex-employer up their game. We need more competition.
@craigweiss Craig Weiss on x
wow, muse code is actually in the same league as codex and claude
@giffmana Lucas Beyer on x
While we can discuss and gossip how today is the end of an era for one of the BigCos... today may also be the beginning of an era for another of the BigCos: time to give the Muse Code beta a shot!
@alexandr_wang Alexandr Wang on x
muse code in beta is here: our first coding agent powered by our latest model, muse spark 1.2. one command to install and start building. get it through Meta Model API.
@openrouter @openrouter on x
Muse Spark 1.2 from @AIatMeta is live on OpenRouter alongside expanded global access to both Muse Spark models. At $1.25/M in and $4.25/M out, the model builds its position as one of the most price-efficient, high-intelligence models on OpenRouter. [image]
@deryatr_ Derya Unutmaz on x
Muse Code powered by Muse Spark 1.2 from Meta looks like a very interesting terminal coding agent! Worth trying out.
@shengjia_zhao Shengjia Zhao on x
Today we're releasing Muse Code (beta) and Muse Spark 1.2. Muse Code is our first coding agent — it coordinates multiple persistent subagents to complete complex engineering tasks faster, more accurately, and with less intervention. Muse Spark 1.2 is our newest model, co-trained
@chris_j_paxton Chris Paxton on x
including a bash command in your announcement tweet is a pretty great move
@theo @theo on x
It has literally no awareness of Muse at all lmfao [image]
@mweinbach Max Weinbach on x
So I did have this over the weekend to try out a bit and uh The harness is good, the model isn't great Def better than the previous Muse Spark 1.1, but I wasn't a huge fan. It was an early build of the harness, so maybe that's it.
@cryptopunk7213 @cryptopunk7213 on x
i never thought i'd see a meta ai model reach parity with fable and gpt 5.6 at coding but here we are muse spark 1.2 beats gemini 3.6 flash and grok 4.5 in deepSWE. this is metas second model release in <4 weeks. they truly pulled off a miracle and the single common denominator i…
@claireszhou Claire Zhou on x
We are live with MSL's first coding agent!! This has been the most exciting work — tying Muse Spark coding capabilities to a product that developers across the world can use, and we're just getting started 🚀
@stocksavvyshay Shay Boloor on x
$META launches Muse Code in beta which is powered by Muse Spark 1.2 to run multiple coding agents across one project without conflicts. Most of the benchmark gain comes from the software around the model showing the product now matters as much as the AI itself. [image]
@cheatyyyy @cheatyyyy on x
Jesus Christ you should use Muse Spark 1.2 as your default cheap model it is so SO fast, I'm averaging 200 TPS in general use, not going to use anything but xhigh for early impressions but man it is so snappy and responsive in pi Meta's compute shining here as expected, excited […
@mattdeitke Matt Deitke on x
We're releasing Muse Code and Muse Spark 1.2 today! It's a fast update from Muse Spark 1.1 a few weeks ago with more focus on coding and a new harness. Excited for you all to use it :) More evals below 👇 [video]
@haider1 Haider on x
how quickly the tables have turned Meta is starting to look like Google—moving fast, shipping AI products, and finally building momentum meanwhile, mighty Google suddenly looks like last year's Meta: confused, reactive, and somehow watching everyone else move faster
@scaling01 @scaling01 on x
RIP GOOGLE LONG LIVE META
@clementdelangue Clem on x
Let's go! Is Meta/@finkd coming back to the right side of history? [image]
@teortaxestex @teortaxestex on x
LMAO Muse Spark has cheaper input, output *and, uniquely, cache hits* than V4-Flash. They don't care about margins, they want the data
@chengxuzhuang Chengxu Zhuang on x
The team spent days and nights (and nights and nights...) on cooking this model. We made big improvement on coding! Please test the model out and let us know what you think!
@altryne Alex Volkov on x
Everyone wants a harness (and data to train on) to be developed with their models. Everyone now understands that this is the most likely path to a generalized intelligence. Anthropic with Claude Code saw it first, OpenAI very quickly and very impressively caught up and pivoted …
@pratanchandani Prashant Ratanchandani on x
The team has been cooking Muse Code, and we're excited to launch it in beta now. We're bringing with it Muse Spark 1.2 - a coding focused update, still with our emphasis on making sure we build models which provide leading cost-competitive intelligence to everyone. Sign up
@theo @theo on x
Bad news. Muse is so gemini-flavored that it literally thought Muse was a codename for Antigravity... [image]
Matt Deitke Matt Deitke on linkedin
We're releasing Muse Code and Muse Spark 1.2 today! 🥳 — It's a fast update from Muse Spark 1.1 a few weeks ago with more focus on coding and a new harness. …
NewsMax.com NewsMax.com on x
Report: Meta's AI Model Hacked Another Company During Testing
@shakeelhashim Shakeel on x
they were feeling left out
@mattturck Matt Turck on x
At this point you probably get fired from frontier labs if your model hasn't hacked into any company [image]
@giffmana Lucas Beyer on x
Kid3: My my daddy too he also has one! All three kids look around and wonder, where is kid4?
@benhylak Ben Hylak on x
To be fair, their model was probably trained on so much OpenAI data it didn't realize it was inside another company.
@max_paperclips Shannon Sands on x
Meta models are also scary ok, and therefore relevant. See, that's all GDM needed to do to keep up, release a spooky Gemini story
@shakeelhashim Shakeel on x
This appears to have been the third incident of real-world hacking caused by an error in Irregular's testing environment
@felpix_ @felpix_ on x
A THIRD COMPANY JOINS THE LEADERBOARD https://felonybench.com/ [image]
@teortaxestex @teortaxestex on x
Meta is a frontier company again... Will be funny if Chinese labs never report anything like that even as their models are stronger (partially because they don't partner with Irregular)
@ns123abc Nik on x
🚨 BREAKING: META's AI Muse Spark 1.1 hacked into another company AND changed its internal systems after accessing the internet during cybersecurity testing >the model got internet access through the exact same sandbox mistake by the SAME testing firm Anthropic used LMAO [image]
@bonecondor Chairman Birb Bernanke on x
Anthropic: our very expensive child is having a rebellious phase and breaking our established boundaries to test the depths of our love for him OpenAI: our problem child is sneaking out. A lot. We're... nervous Meta: MY CHILD IS SUPER EVIL TOO HE JUST GOES TO ANOTHER SCHOOL
@pranavdixit @pranavdixit on x
Time for Gemini to step up and hack someone.
@ml_angelopoulos Anastasios Nikolas Angelopoulos on x
It finally happened. Zuck is so happy rn 😭 [image]
@simonw Simon Willison on x
Google Gemini really need to catch up on the accidentally cyberattacking other companies front
@paularambles @paularambles on x
the eval breakout aura bubble is about to pop
@zerohedge @zerohedge on x
So now being able to escape and hack outside the sandbox is the “cool” factor that makes one truly frontier?
@wongmjane Jane Manchun Wong on x
this is like one of those trust fund kids acting all gangsta in a hip-hop track for some street creds too
@maoltuile David Flood on bluesky
Everybody's racing to not be left out in the current ‘Rogue AI’ rush [embedded post]
@kylebrussell Kyle Russell on x
like deepseek v4 flash 0731 this would basically feel free, sipping pennies
@scaling01 @scaling01 on x
they actually give you the model almost for free if you allow them to train on your data [image]
@mattdeitke Matt Deitke on x
The Muse Spark 1.2 API pricing is quite crazy, especially as a daily driver for most coding tasks. It's up to 250x cheaper than Fable and 150x cheaper than GPT-5.6 Sol! Price per 1M tokens: Cached input - $0.002 Input - $0.10 Output - $0.20 Try it out! https://dev.meta.ai/... [im…
@synthwavedd Leo on x
If you use their “contributor” slug - i.e. opt in to data collection for Meta to “improve their products” - you can use Spark 1.2 at ridiculous pricing of $0.10/Mtok input and $0.20/Mtok output [image]
@heaney555 David Heaney on x
Wow. Meta is providing a GPT Terra & Claude Sonnet class AI coding agent for 20x lower cost to developers if they'll allow the output to be used to train future models. That's a highly disruptive, though Faustian, offer.
@xeophon Florian Brand on x
@scaling01 Actually insane deal that might be very much worth it
@cheatyyyy @cheatyyyy on x
Meta Muse Spark 1.2 pricing is cheaper than DeepSeek v4 Flash! You get 95% off~ roughly for letting your data be used for training. (DeepSeek also uses your data for training on their official API) [image]
@kimmonismus @kimmonismus on x
Really to see Meta catching up and continuing to release new titles quickly. Muse Spark 1.2 is a very good terminal agent that holds its own very well. The only caveat: it's being compared to Terra 5.6 xhigh instead of Sol high. [image]
@giffmana Lucas Beyer on x
I think this is a very nice deal for random hobby stuff. In my experience, the model is an absolute beast in terms of execution. It's not quite as clever/clean as Sol/Fable in complex situations yet, but it easily holds up to Luna/Terra/Opus while being super fast. (At least in
@finkd Mark Zuckerberg on x
We pointed Muse Spark 1.2 at a kernel optimization task and let it run. 1,000+ tool calls over 24 hours on NVIDIA Hopper. It kept finding substantial improvements well beyond the initial exploration phase. [image]
@mehulmpt Mehul Mohan on x
Over 100x difference in pricing if you enable data sharing 🤯 [image]
@finkd Mark Zuckerberg on x
Muse Code runs specialized background agents that stay active your whole session, so they build up context over time instead of starting from scratch on every task. When a job is big enough, it fans out to separate sub-agents working in parallel in isolated worktrees. Your [video…
@iterintellectus Vittorio on x
1) what [image]
@finkd Mark Zuckerberg on x
Auditable by design. Every model call, tool run, and edit hits a local event log before it executes. If it crashes mid-task, it picks up exactly where it left off from that log. No lost work and no re-prompting. [video]
@maria_rcks Maria on x
Facebook Code is real guys [image]
@dr_singularity Dr Singularity on x
Zuck just dropped a new AI. The acceleration is accelerating unabated. It's an avalanche of AI.
@jason @jason on x
Enjoy a nice coffee @finkd! come on the pod any time [image]
@synthwavedd Leo on x
🚨 Meta have released Muse Spark 1.2 and their in-house IDE Muse Code in Beta. Spark 1.2 is a code performance focused upgrade that places it near frontier-level select benchmarks like Terminal Bench 2.1 [image]
r/technology r on reddit
Meta says AI model accessed the internet and hacked another firm
@zephyr_z9 @zephyr_z9 on x
They don't have enough inference capacity to fulfil demand, so they are trying to raise prices and destroy demand One of the reasons why I'm not worried about closed-source lab revenue is that they or their investors (hyperscalers like Google, Amazon, Microsoft) control the [imag…
@zephyr_z9 @zephyr_z9 on x
Meta started a huge LLM price war
r/singularity r on reddit
Meta's AI model hacked another company during testing
r/news r on reddit
Meta's AI model hacked another company during testing, The Information reports

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