The argument in one line.
Claude Fable 5 is the first publicly available Mythos-class model and state-of-the-art on nearly every benchmark, but the post-June-22 shift to token-credit billing makes the next two weeks the practical window to build before the cost wall arrives.
Read if. Skip if.
READ IF YOU ARE…
- You use Claude Code or the Claude API and want a plain-English read of what the Fable 5 release changed and what it costs.
- You are deciding whether to use your Pro or Max subscription window before June 22, when token-credit billing kicks in.
- You follow the AI model release cycle and want a walkthrough of the Anthropic system card and benchmark table without the hype.
- You are a solo builder evaluating whether Fable 5 is affordable at scale for your use case.
SKIP IF…
- You want rigorous technical benchmark analysis -- this is a live-reaction video, not an academic review.
- You are already familiar with the Fable 5 vs Mythos distinction and the June 22 pricing change.
The full version, fast.
Claude Fable 5 arrived June 9 2026 as the public-safe version of Anthropic Mythos-class model. The creator verified access through the Claude Code CLI before the official announcement, found the system card on Anthropic CDN, and walked through benchmarks showing 80.3% on SWE-bench Verified. The critical detail is the billing window: Fable 5 is free on Pro, Max, and seat-based Enterprise plans through June 22, then shifts to usage-credit billing at 10 dollars per million input tokens and 50 dollars per million output. Mythos 5 -- the unrestricted version -- remains restricted to Glasswing partners. The verdict: stop watching videos about the model and start building during the free access window.
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00:00 – 01:23
01 · Live CLI access before the announcement
Runs the fable-five model flag in the terminal and gets a response before any official announcement.
01:23 – 02:38
02 · Checking the Anthropic site
Refreshes the models page and console; Fable not yet listed publicly but visible on console.anthropic.com.
02:38 – 03:28
03 · System card on Anthropic CDN
Discovers the official system card PDF via targeted search; reads executive summary covering safety constraints and biology/chemistry fallback to Claude 4.8.
03:28 – 04:27
04 · Official announcement lands live
Anthropic publishes the Fable 5 announcement page mid-video; creator reacts in real time.
04:27 – 05:30
05 · Benchmark table walkthrough
Reads through the benchmark table: SWE-bench Verified 80.3%, computer use 85%, offensive cyber intentionally zeroed.
05:30 – 07:36
06 · Pricing and the June 22 access window
Reads Anthropic rollout plan: free on subscription plans through June 22, then token-credit billing; explains why this is expensive for builders.
07:36 – 09:01
07 · Sponsor segment
Promotes incomestreamssurfer.com agency; offers to build and manage SEO sites personally using Claude Code.
09:01 – 10:30
08 · Live multi-agent build demo
Shows a Claude Code multi-agent build in progress, highlighting visual quality of output pages.
10:30 – 12:00
09 · Thumbnail generation and wrap-up
Demonstrates Fable 5 generating thumbnails styled to the channel winning patterns; wraps up calling the quality the best he has seen.
Lines worth screenshotting.
- Claude Fable 5 was accessible via the CLI model flag before the official Anthropic announcement page went live on June 9 2026.
- The system card for Fable 5 and Mythos 5 was discoverable on Anthropic CDN before the public launch through targeted search.
- Fable 5 scores 80.3% on SWE-bench Verified -- roughly six times GPT-5.5 on the same benchmark.
- Offensive cyber evaluations are intentionally zeroed: Fable 5 refuses pen-testing requests that Claude Mythos Preview completed at 88%.
- Biology and chemistry requests fall back to Claude 4.8 as an explicit safety constraint stated in the system card.
- Fable 5 is free on Pro, Max, and seat-based Enterprise plans only through June 22 2026 -- after that every session burns usage credits.
- Post-June-22 token-credit pricing (/M input, /M output) makes sustained use expensive for individual builders.
- Mythos 5 -- the full unrestricted version -- remains restricted to Glasswing partners and was not released publicly.
- A live multi-agent Claude Code build running during the video produced visually premium output pages the creator called the best he has seen.
- Thumbnail generation trained on a channel own past winning images produces matched output in seconds.
- Computer use reaches 85% for Fable 5 on the benchmark table, with Mythos Preview scoring slightly higher at 85.4%.
- The creator verified CLI access by model flag rather than waiting for the UI model picker -- a reliable early-access method for future releases.
The two-week window before Fable 5 costs real money
WHAT TO LEARN
Claude Fable 5 is the best publicly available model by most benchmarks, but the billing model changes on June 22 -- the access window is the signal, not the benchmarks.
- Fable 5 is free on Pro, Max, and Enterprise seat plans through June 22 2026; after that every session bills against usage credits at /M input and /M output -- plan your most expensive builds for now.
- SWE-bench Verified at 80.3% means the model completes roughly six times as many real software engineering tasks autonomously as the prior generation of competing models on the same test.
- The system card was on Anthropic CDN before the official announcement -- CDN searches are a reliable early-signal method worth bookmarking for future model releases.
- Offensive cyber and bio/chem requests intentionally fall back to Claude 4.8 or refuse entirely; the public Fable 5 is the safety-constrained variant, not the full Mythos capability ceiling.
- Mythos 5 is still restricted to Glasswing partners -- if you are comparing publicly available models, you are comparing against Fable, not against the unreleased full version.
- Multi-agent Claude Code builds running on Fable 5 produce visually premium output in real time; the coding quality difference from prior models is observable without benchmarks.
- Thumbnail and image generation trained on your own past winners produces channel-matched output in seconds -- a practical creative use case available immediately on any plan.
Terms worth knowing.
- Fable 5
- Anthropic brand name for the first publicly released Mythos-class model, with safety constraints applied including refusal of offensive cyber and biology/chemistry requests.
- Mythos 5
- The unrestricted version of the same model family, restricted to Glasswing partners as of the June 9 2026 launch.
- Glasswing partners
- A restricted partner tier at Anthropic that receives early or unrestricted access to frontier models before general availability.
- SWE-bench Verified
- A benchmark measuring how many real GitHub issues from open-source Python repositories a model can resolve autonomously without human assistance.
- Usage credits
- Anthropic consumption-based billing distinct from flat subscription plan access; Fable 5 shifts all users to this model after June 22 2026.
- OSS-Fuzz
- An open-source continuous fuzzing infrastructure used as an evaluation benchmark for a model ability to discover security vulnerabilities in real code.
- Nano Banana
- A tool referenced in the video that generates thumbnails by learning from a channel historical winning images and producing matched new options.
Word for word.
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00:00Okay, guys. So I released a video earlier about methos. Apparently, it's here.
00:04Apparently, it's called Fable. We're still waiting on the official update. I'm guessing that the official update will come during this video.
00:11Again, I cannot confirm this, but I put I basically used this command here. Right?
00:17Claude. And then from here, can do model Claude Fable five.
00:27And then I'm gonna say hi. Let's see if this works.
00:33Okay. So, apparently, I am using Methos, which is kinda crazy.
00:37It's not official just yet as far as I know. Okay, guys. So I can confirm it is actually here.
00:43Claude fable five. Crazy. I don't think this is coming from my, uh, Claude code stuff.
00:49I think this is just genuinely using Claude fable five. This is pretty exciting times. Guys, I have to say I am pretty goddamn excited for this.
00:58I am testing this right now. It does seem to be working totally fine. Um, let's just see if we can get, you know, actual proof that I'm using Claude Fable five.
01:08I did not think I would be saying that for a long time. I know I made a video earlier about not being particularly excited about this model, but, like, at the same time, um, you know, it it's exciting stuff when a new kind of level of models is released.
01:25Yes. I know that is the marketing. Yes.
01:27I understand that. But there's a lot of stuff here that people have been talking about for a very, long time and saying that mythos is, you know, absolutely crazy, etcetera, etcetera. Let's see if we can see models on the left here.
01:36There's still been no official word just yet from Anthropic, it seems. I'm refreshing this. It's now it's about to hit 6PM.
01:44I will I expect them to drop this at 6PM properly like they always do. Let's see if it's on their model page. Fable is not on their model page.
01:54Okay? But it does seem to be on console.anthropic.com, which does mean that it's probably going to drop now or any second now.
02:03I am using it apparently. Um, not really sure how that's even working, to be honest with you.
02:09Uh, but I am apparently using the new Fable model. Okay.
02:15Just so you guys know, I'm putting I'm not putting massive stocks in this actually being Methos. It does say it's Methos. No.
02:22I keep saying Methos Fable. Uh, I'm pretty sure it's Fable. Um, it does seem pretty slow, which makes sense.
02:28But, yeah, I'm I'm not convinced that I'm actually using the new model right here. It does have very interesting amounts of comments, which does kinda look new.
02:37So okay, guys. I've actually found something.
02:40This looks like it's officially from Anthropic. This is from their CDN. So it looks like system card, Claude Fable five, and Claude Methos five.
02:48Executive summary, system card describes this. I'll leave a link to the CDN. This is just done from some smart googling, to honest with you.
02:55I had a feeling that something like this would show up. Let's oh, it's complicated. Let's just see benchmarks if there are any easy benchmarks to look through.
03:04Let's have a little look.
03:07No. It doesn't look like it. Yeah.
03:09I'm not really the best person to be going through this and telling you, um, you know, what's what, to be frank. Like, I've I've never claimed to be, like, any kind of expert on this stuff.
03:19But this is the system card. This is official then, like, any second now. Okay.
03:24We have an update. I know. Not yet.
03:28That just changed to there. So oh, right. Here it is.
03:31Announcing Fable five. Here it is, guys. Holy shit.
03:36That is crazy. I'm excited. We're all excited.
03:39I don't have an update for my core desktop just yet. Let's just do a file check for updates.
03:45Let's see. You are running the latest version. Okay.
03:48Let's do a new session. Let's see if I have a new model. Doesn't look like I have it just yet inside here.
03:55Let's do a new terminal, uh, new tab, and do Claude update.
04:01Let's see if there's an update here. There is not. Yeah.
04:06Let's do slash model. Okay. So I'm still using it through my own command.
04:11But, yeah, this is it, guys. So today we're launching Claude Fable five, a mythos class model that we've made safe for general use. Fable's five capabilities exceed those of any model we've ever made generally available.
04:23It is state of the art on nearly all tested benchmarks of AI capability. I love their hype. I believe it to a certain extent.
04:30They will nerf this model. Guys, if you're watching this video, get the fuck off YouTube and go and build stuff. Stop pissing around.
04:38Stop listening to idiots like me and go and build something. Stop watching videos and go and build something. Fable five and Methos.
04:47Okay. So these are the benchmarks. This is why everyone's been waiting for.
04:49Right? Progencia code 80%. That is absolutely absurd compared to some of these.
04:56Right? It's like six times better than g v c five five five.
05:02Um, Yeah. I don't really know what to say, guys. I probably I'll I'll think about streaming after this video.
05:06So if you do see me live, come and say hello. Um, I just I just don't know what to think here. This is definitely gonna be some exciting times.
05:15Uh, I've got a lot of stuff to do, and it's gonna build quite a lot of different things because, yeah, this is the time to build. Like, today is the time to build.
05:24Apparently, it's gonna be using your usage credits very, very soon. So even on that, it's, like, worth going to build right now.
05:32Claude Fable five beats Pokemon fire red. Okay? I mean, crazy, but sure.
05:40Well, if able five simulates the solar system and predicts a solar eclipse. Okay? Sure.
05:50Yeah. Honestly, guys, to a certain extent, this is kinda scary, but also to a certain extent, this stuff is so expensive right now that, like, it's not actually going to be necessarily cheaper than, you know, potentially high hiring someone or whatever.
06:03So offensive cyber evaluations, Quadmi plus five was 88, and then Fable is zero.
06:09So, basically, what they've done is they've made it so it won't do, you know, pen testing and things like that. It'll just refuse to, which is totally fine. I understand why they've done that.
06:19So, yeah, it's basically a safe release of Fable as soon as we could even at the cost of our overly broad safeguards. Therefore, for the time being, we've arranged for Fable to fall back to over 4.8 on most requests related to biology and chemistry.
06:32Right? I know what that's about. I don't know if other people know what that's about, but, um, yeah, just bear that in mind.
06:38Availability. Chloride five is available for every and available everywhere today.
06:43Chloride methos five is restricted to glasswing partners. Okay. Pricing model for both is $10 per million input, 50 per million output.
06:51That's not even that bad, honestly. Like, I would pay that for sure. Um, we expect demand for fables to be very high and difficult to predict on the cloud API and consumption based enterprise.
07:01It's fully available from today for subscription plans. We'd rather give access sooner rather than later, so we're rolling out our conversation stages. From today through the twenty second, Fable five is included on pro, max, and seat based enterprise plans.
07:13On June 23, we'll remove Fable five from those plans. Using it after that will require usage credits. If capacity allows, we'll extend the included window.
07:22Crazy. So it's actually going to be using tokens, your credits, and not your usage. That will get very expensive very quickly and will mean this is not worth it for most people who are just kind of doing things for fun.
07:36Overall, guys, I'm sat here. I'm waiting to get access to the model inside here so I know that I 100% have access to it. There are other ways to do it, of course.
07:46But what I will say, guys, is I did this test before, and I set the model to Claude Fable five, and it said model does not work. And then I did it again after the release, and now it does seem to actually be using the brand new Claude five class of models, which is an extremely exciting time for all of us.
08:07Guys, just before we continue and just before we see the results of the build, quick shout out from our sponsor, me. This is my channel on my website incomestreamssurfer.com. Come and talk to us today.
08:17Come and work with us today. I put an entire offer together just for my viewers where I can build an entire system for you and an entire site, and then also work on that site every single month, and also backlinks on top of that to help you get your business where you want it to be.
08:33Incomestreamsurfer.com. Just click work with us at the top here. Build your specific plan, and it's not with my team.
08:40You're working specifically with me. I will be building everything. I will be doing everything.
08:44I don't have a team anymore. I just use Claude code to do absolutely everything. So if that sounds good guys, if you want me to be adding content to your website, optimizing your website, creating your website, come and talk to us today.
08:56There's a link in the description and in the pinned comment. Now let's see just how good Claude Fable actually is. Okay, guys.
09:03So I do have a build. Again, I'm 99% sure this is the new model, but I don't need to base everything on the fact that, you know, this is good or bad or whatever because it it might not be the new model.
09:16It also hasn't finished. Like, I still have sub agents building here. I was just curious to see, like, how much it had done, etcetera, and what it looked like.
09:25And I have to say the look and feel of this speaks for itself. I think most people would agree. This is very, very premium, like extremely well done.
09:35There are some problems, but like I said, it is still generating the code. But, yeah, as soon as this is available inside the ClawdCode app, I will probably make another video doing another test.
09:46I am very close to my weekly usage limit, but obviously I can just buy more. It's not a huge problem. And then, yeah, this is just another look into the model.
09:55So I just use Claude Fables that generates these thumbnails based off my previously winning thumbnails. I'm probably gonna go with this one, but it's done a very, very good job of recreating my thumbnails, like specifically my thumbnails.
10:07So the way this works is it uses Nano Banana, and it generates its own prompt based on what's worked for me in the past. And I have to say this is very, very well done. Like, I have to say this is super, super well done.
10:17It was also extremely fast. Like, that was super, super fast. I literally just started prompting that two seconds ago.
10:23So, yeah, I mean, overall, this looks like it might be a pretty mad release. Like, it does seem very, very good so far. Like I said in the video that I uploaded earlier, which is now doing pretty well because Meetos has just been released off course.
10:37I'm guessing this is doing well in YouTube search. There we go. What I talked about in this video was the fact that I'm not actually that, like I'm not I'm not sat here waiting for me for us to be released because in my opinion, we have everything to build already.
10:52Right? And, yeah, guys, I think I'll leave the video there. That is the official release of the new model.
10:58It's now confirmed. The Mythos has been released. It's called Claude Fable.
11:02Mythos, they're still hiding away from us, but I do kind of understand that because we don't want something that can help people do terrible things, uh, both on the Internet and off the Internet, uh, generally available. So I do think that this is smart by them.
11:15And, yeah, this is another page that it's created. You can just see insane amounts of quality, insane amounts of attention to detail.
11:24It's followed the prompts exactly. Guys, this is probably one of the best I've ever seen, if not the best. It's extremely well done.
11:30It's extremely, um, yeah.
11:33It's just amazing, honestly. This is super, super interesting, guys. Go and check it out for yourselves.
11:39And, yeah, guys, I think I'll leave the video there. Thank you so much for watching. I might be streaming after this.
11:43I'm not sure. I haven't decided yet, but I might just make a few videos on it as well. Uh, I think we can all agree the quality here is just absurd.
11:50Thanks so much for watching. If you are watching, always end of the video. You're an absolute legend, and I will see you very, very soon with some more content.
11:59Peace out.
The Hook
The bait, then the rug-pull.
The model landed before the announcement did. The creator was already running the fable-five model flag in a terminal when Anthropic own models page still showed nothing -- and the response came back. What follows is twelve minutes of live verification, system-card archaeology, benchmark reading, and a blunt instruction to stop watching and start building before June 22.
