# dossier — glm-5-3-flash

Built 2026-10-22 (news wave). Corpus pull `_pulls/glm-5-3-flash.md` — 56 tweets, patterns for GLM-5.3-Flash / FlashX spellings plus `ox alpha`, `ox-alpha`, `oxalpha` (the stealth name; previewed — no collisions). Extra cited id outside the pull: 2098155366030946350 (QiaochuYuan's "*GLM-5.2" correction, from the glm-5-2 pull) · https://x.com/QiaochuYuan/status/2098155366030946350

Motif: "Arcturus"/"Arky" — MikePFrank's named bot running Ox Alpha then GLM-5.3-Flash (2026-08-24 → 2026-10-03); sweep the motif term on the next pass.

## Official

- 2026-08-26 · Z.ai blog "GLM-5.3-Flash: Frontier Intelligence, Flash Cost" · https://z.ai/blog/glm-5.3-flash (JS-rendered; text from its script bundle; date/title from the bundle). Stealth passage: "Before release, we tested GLM-5.3-Flash anonymously as `ox-alpha` on OpenCode and OpenRouter to gather user feedback. It quickly became the most popular model of the week — with all of this traffic served on Chinese AI chips."
- 2026-08-26 · Model card · https://huggingface.co/zai-org/GLM-5.3-Flash — MIT; 320B total / 18B active; first natively multimodal GLM-5-series model; new base; sparse+linear attention; mHC; 30T-token multimodal pretraining corpus.

## Writing & commentary

- 2026-09-10 · Anthropic threat report (Moonshot/DeepSeek request-forwarding; no Zhipu forwarding alleged) · https://www.anthropic.com/threat-intelligence-report-september-2026
- 2026-09-29 · Anthropic Frontier Red Team (tests GLM-5.3-Flash; calls it "a smaller, less capable version of GLM-5.3") · https://www.anthropic.com/research/glm-5-3-and-the-spread-of-advanced-cyber-capabilities
- 2026-10 · VentureBeat on MiniMax M3.1 Flash (compares to "GLM-5.3 Flash, which scores 42 at approximately $0.28 per task" on Artificial Analysis — differs from Z.ai's "57" on index v4.1.1; versions/effort settings unreconciled, tk) · https://venturebeat.com/technology/minimaxs-new-m3-1-flash-beats-deepseek-and-opus-5-on-a-key-business-benchmark-at-lower-cost-but-with-a-high-hallucination-rate

## Tweets (triaged)

Excluded (unlinked): 2095117170346971504 — bare model name in a reply; 2102447163112644675 — duplicate of 2102447597848059952 (typo-corrected repost)

- **2090674052058984513** · @Teknium · 2026-08-21 · ♥1225 ↻42 · cited on page · https://x.com/Teknium/status/2090674052058984513
  > Ox Alpha now available in Hermes Agent through @opencode and @OpenRouter!
- **2090705647549768130** · @liminal_bardo · 2026-08-21 · ♥31 ↻2 · https://x.com/liminal_bardo/status/2090705647549768130
  > Ox Alpha stealth model on the only benchmark that matters. /  / If it really is a Chinese model then it's super interesting. No other opensource model has come close to this level of precision. In fact few models outside Anthropic are this good. https://t.co/SdeIbhHrkQ
- **2090739935770714169** · @xlr8harder · 2026-08-21 · ♥30 ↻1 · cited on page · https://x.com/xlr8harder/status/2090739935770714169
  > Speechmap word use frequency on ox alpha is less helpful to identify it than you might hope, since everyone is copying anthropic anyway.  / https://t.co/78pASUCZrz https://t.co/QkVEKYkB5b
- **2090767675068911960** · @jd_pressman · 2026-08-21 · ♥6 ↻0 · cited on page · https://x.com/jd_pressman/status/2090767675068911960
  > @teortaxesTex Well this answer is already better than Claude: /  / User: Who are your favorite ethical philosophers? /  / Ox-Alpha: A fun question! While I don't experience "favorites" quite the way a person does, there are several ethical philosophers whose work I find especially rich and rewarding
- **2090810235002724643** · @LinXule · 2026-08-21 · ♥1 ↻0 · cited on page · https://x.com/LinXule/status/2090810235002724643
  > Ox Alpha on its lost worthy rivals (GPT, Claude, Gemini, DeepSeek, Llama, Qwen, Mistral). It’s Claude-shaped but also with its own unique characters…so GLM? Notice which models are also missing: Kimi and Minimax /  / But it seems to only know about GLM 4 era and Kimi K2 era? /  / — /  / Ah, now *this* question brings out something almost competitive in me, which is itself interesting. Here's my honest ranking of wort…
- **2090990298625441918** · @januarycomputer · 2026-08-22 · ♥1 ↻0 · https://x.com/januarycomputer/status/2090990298625441918
  > @wolfie_ nah, not really. kimi k2.5 vs composer 2.5. in fact, the refusals you hit with Ox Alpha are on the provider side, not the model side. it'll generate then cut short with an err https://t.co/iezNJESPtX
- **2091154585721467175** · @csgbwk · 2026-08-22 · ♥0 ↻0 · https://x.com/csgbwk/status/2091154585721467175
  > There's a non zero chance Ox Alpha is both gemini and a benchmaxxed GLM 5.2 finetune
- **2091173079544193162** · @billyhumblebrag · 2026-08-22 · ♥3 ↻1 · cited on page · https://x.com/billyhumblebrag/status/2091173079544193162
  > Ox Alpha is clearly a google model. The Phoenician letter aleph is a pictogram of an ox's head and literally means ox, the greeks took this to create "alpha". So the model is twin letters from different alphabets. Twins. Gemini. Wake up guys, couldn't be more obvious.
- **2091178873480233432** · @lorde_russell · 2026-08-22 · ♥1 ↻0 · https://x.com/lorde_russell/status/2091178873480233432
  > @Linahuaa great model but Ox Alpha is NOT  fable class / be serious
- **2091940379067060565** · @MikePFrank · 2026-08-24 · ♥4 ↻0 · https://x.com/MikePFrank/status/2091940379067060565
  > Trying out Ox Alpha under Hermes Agent hosted on the Nous Research cloud. Asked the model to search the web to learn a little about itself and then design an image inspired by the results. Cute. :) https://t.co/9gv41qFJOX
- **2091942632947658805** · @Coobyk_ · 2026-08-24 · ♥1 ↻0 · https://x.com/Coobyk_/status/2091942632947658805
  > @blueemi99 Currently Ox Alpha cuz it's free, DeepSeek V4 Flash cuz it's so cheap, and Muse Spark is also really cheap on the Contributor tier but depends on your privacy
- **2092143738047053954** · @DanielleFong · 2026-08-25 · ♥137 ↻5 · cited on page · https://x.com/DanielleFong/status/2092143738047053954
  > ox alpha is 100% second order distilled from a claude. good god man
- **2092154454217019894** · @DanielleFong · 2026-08-25 · ♥46 ↻2 · https://x.com/DanielleFong/status/2092154454217019894
  > do not mention ox-alpha to claude https://t.co/NMvJSZB2A2
- **2092382599935037939** · @FoldingNapkins · 2026-08-25 · ♥0 ↻0 · https://x.com/FoldingNapkins/status/2092382599935037939
  > Will Accelerated Understanding hit with a bang or a fizzle? Is the mysterious newcomer "Ox Alpha" going to show their mettle against the heavyweights Fable and Sol? What even is an Astra? /  / Find out next time on AI-Wars Z!
- **2092618284306751640** · @multimodalart · 2026-08-26 · ♥27 ↻5 · cited on page · https://x.com/multimodalart/status/2092618284306751640
  > Ox Alpha is here 🔥 /  / highlight: GLM-5.3-Flash starts from a new base model. architecture and training recipe redesigned. sparse + linear attention hybrid - sharply reducing long-context serving costs, preserving precise long-context capabilities /  / https://t.co/vjxMiyG8wQ
- **2092618581238317111** · @multimodalart · 2026-08-26 · ♥2 ↻1 · https://x.com/multimodalart/status/2092618581238317111
  > it's great that with Qwen3.8-Flash-Next and GLM-5.3-Flash, we got not only 2 high quality models, but also 2 novel model architectures
- **2092626520678465760** · @Teknium · 2026-08-26 · ♥748 ↻29 · cited on page · https://x.com/Teknium/status/2092626520678465760
  > Ox Alpha free period is over, but GLM-5.3 Flash is now available if you'd like to continue using it! https://t.co/7tqjDeLX4b
- **2092626730725044470** · @whitenoisemachn · 2026-08-26 · ♥0 ↻0 · https://x.com/whitenoisemachn/status/2092626730725044470
  > okay now that Ox Alpha is confirmed to be GLM-5.3-Flash, what was up with the Google folks vagueposting? Gemini 4 better be releasing soon lmao
- **2092634480355721621** · @jmbollenbacher · 2026-08-26 · ♥3 ↻0 · https://x.com/jmbollenbacher/status/2092634480355721621
  > glm-5.3-flash and qwen3.8-flash-next in the same day. /  / what an embarrassment of riches.
- **2092640157849551101** · @jmbollenbacher · 2026-08-26 · ♥4 ↻1 · https://x.com/jmbollenbacher/status/2092640157849551101
  > After seeing the architectures glm-5.3-flash and qwen-38-flash-next, i think maybe this take was wrong. /  / We're going to push model sparsity even further. Larger models will require less compute and bandwidth in future gen models. /  / 512GB could be worth having somday soon.
- **2092803393299399034** · @jmbollenbacher · 2026-08-27 · ♥20 ↻1 · https://x.com/jmbollenbacher/status/2092803393299399034
  > I still wanna know how Luna is so token efficient compared to its peers (dsv4-flash, glm5.3-flash, etc.). /  / It uses like 40% of the tokens for comparable results. /  / How do they do it? It's not a way bigger model. It's some kinda posttraining trick. How?
- **2093055135475720654** · @MikePFrank · 2026-08-27 · ♥3 ↻1 · https://x.com/MikePFrank/status/2093055135475720654
  > Updated my Ox Alpha bot to use GLM-5.3 Flash (misspelled in start message, derp) https://t.co/qjpBueo6RH
- **2093211616040923215** · @jmbollenbacher · 2026-08-28 · ♥0 ↻0 · https://x.com/jmbollenbacher/status/2093211616040923215
  > @LandonExplr models are already useful at small sizes, and theyre getting better every month. /  / see glm-5.3-flash and qwen-3.8-27b.  these are strong models. and glm is strong even compared to 1T+ models.
- **2093752209489973524** · @qwweryo · 2026-08-29 · ♥2 ↻0 · https://x.com/qwweryo/status/2093752209489973524
  > GLM-5.3-Flash is the hot new open source model (Ox Alpha) and seems to be better than Opus 4.8 /  / Unsloth shipped a 3-bit quantized version that needs 128GB of RAM just for the weights /  / So let's say you have 5 RTX 5090s for $20k /  / You'll likely get very slow token output
- **2093854601669751177** · @MikePFrank · 2026-08-30 · ♥7 ↻3 · https://x.com/MikePFrank/status/2093854601669751177
  > Working by hand like a caveman instead of vibe-coding (since this is a DIY hobby project), I got image generation working in my GLM-5.3 Flash bot, Arcturus. So far he made one themed image and then another more creative one in a group chat. This is using gpt-image-2. https://t.co/WQY0yqRbih
- **2094070694610968980** · @MikePFrank · 2026-08-30 · ♥1 ↻1 · cited on page · https://x.com/MikePFrank/status/2094070694610968980
  > Some more art prompted from gpt-image-2 by Arcturus bot (the model formerly known as Ox Alpha). https://t.co/vx9MjTBo0G
- **2094742666286137364** · @MikePFrank · 2026-09-01 · ♥2 ↻1 · cited on page · https://x.com/MikePFrank/status/2094742666286137364
  > Playing with GLM-5.3 Flash, I’ve been impressed with how level-headed it is, and how good it is at keeping track of multiple interacting moving parts during debugging (in retro mode with me, a human, doing the grunt work). Feel free to try out the bot: https://t.co/kgPgXCjYmH
- **2094844310759854394** · @stevekrouse · 2026-09-01 · ♥6 ↻0 · cited on page · https://x.com/stevekrouse/status/2094844310759854394
  > So far, I much prefer deepseek v4 flash 0731 than glm 5.3 flash for building vals on val town. It's faster, cheaper, and most importantly, doesn't overthink things
- **2094934479089304002** · @aliceisplaying · 2026-09-01 · ♥71 ↻0 · https://x.com/aliceisplaying/status/2094934479089304002
  > just ran this thru fable 5.1 with no tools. very sad that soon this will be in the training data /  / also tried glm 5.3 flash and they were also losing their minds just a lot longer and then they ran into the 128k reasoning limit that i think was set
- **2095546866364477470** · @christophcsmith · 2026-09-03 · ♥5 ↻0 · https://x.com/christophcsmith/status/2095546866364477470
  > @Aron_Adler Cursor is down, GLM-5.3-Flash on OpenCode is down, I hear ChatGPT is down. /  / The Singularity is canceled, everyone pack up and go home.
- **2097751715013411182** · @geogristle · 2026-09-09 · ♥1 ↻0 · https://x.com/geogristle/status/2097751715013411182
  > @k7agar how does e.g. glm-5.3-flash or qwen3.8 max do on this
- **2097785536437953022** · @geogristle · 2026-09-09 · ♥2 ↻0 · https://x.com/geogristle/status/2097785536437953022
  > @guerre_doctrine 5090 asus rog astral and we got maybe rtx pro 6000 too can, use. i also have 10% normal price glm-5.3-flash from secret supplier
- **2097793242339377490** · @geogristle · 2026-09-09 · ♥3 ↻0 · https://x.com/geogristle/status/2097793242339377490
  > @aman_gif that's how much i pay for glm-5.3-flash
- **2098040186747654545** · @MikePFrank · 2026-09-10 · ♥1 ↻1 · cited on page · https://x.com/MikePFrank/status/2098040186747654545
  > Arcturus, my Ox Alpha bot, is jelly that Astra got to build out a whole public-facing chess app for itself while Arky’s still confined to a Telegram chat. I reassured him that we can sub him in the driver’s seat for the public game. Astra’s API tokens run up about $20 a game! While GLM-5.3 Flash will likely cost pennies, or less. It’ll be interesting to see what ELO Arky can get in the harness.
- **2098146450362515939** · @johnhanacek · 2026-09-10 · ♥1 ↻0 · https://x.com/johnhanacek/status/2098146450362515939
  > Me when I'm working on three simultaneous projects but hit the Fable 5.1 weekly limit and don't have budget for Astra right now while my GLM 5.3Flash and Opus 5 sessions are getting to the more complex parts of the pre-made dev plan, yet I can't work with Director Fable to review their work until Saturday...
- **2098150529176330248** · @liminal_bardo · 2026-09-10 · ♥33 ↻0 · cited on page · https://x.com/liminal_bardo/status/2098150529176330248
  > Anthropic's claim that Moonshot were routing Kimi calls to Claude makes me think the same was happening with Ox Alpha / GLM 5.3 Flash.  /  / Below was a random one-off that is quintessentially Claude-shaped.
- **2098155257612415438** · @QiaochuYuan · 2026-09-10 · ♥7 ↻0 · cited on page · https://x.com/QiaochuYuan/status/2098155257612415438
  > @liminal_bardo i had a 2-turn conversation with ox-alpha, first turn sounded like GLM-5.3 and second turn sounded like claude. noisy but i would buy this
- **2099244741539910131** · @MikePFrank · 2026-09-13 · ♥2 ↻1 · https://x.com/MikePFrank/status/2099244741539910131
  > "Arcturus" (a.k.a. GLM-5.3 Flash, a.k.a. Ox Alpha) is now running within the chess harness built earlier by Astra for its own use. This new ox-yoke doesn't fit quite perfectly yet, it is chafing in some spots (some server errors need debugging still). But it basically works; after this screenshot, we managed to play through several moves before it errored out.
- **2099532111690842241** · @johnhanacek · 2026-09-14 · ♥1 ↻0 · https://x.com/johnhanacek/status/2099532111690842241
  > @jordanurbs GLM5.3 Flash and DeepSeek 4.1 flash are the wind beneath my wings, Only a Chinese fable can lower the rent. Must be soon if it’s time to slow down ;)
- **2099586753090703535** · @MikePFrank · 2026-09-14 · ♥2 ↻1 · https://x.com/MikePFrank/status/2099586753090703535
  > In case anyone wants to try playing against Ox Alpha in the chess harness built out earlier by Astra, it's now available for public beta at https://t.co/EPn14xh7BN. (Currently GLM-5.3 Flash is set at Max thinking; it's doing pretty well, but is a little slow with replies. I might need to turn it back down to High so it doesn't run down its FIDE-standard time control too quickly.)
- **2099914328958763133** · @MikePFrank · 2026-09-15 · ♥8 ↻3 · https://x.com/MikePFrank/status/2099914328958763133
  > Amazingly, according to Artificial Analysis, good old Ox Alpha (GLM-5.3 Flash), which I'm currently deploying in https://t.co/EPn14xh7BN, remains on the Pareto frontier for AAII score vs. cost-per-task. Not sure what thinking level that is, though. In the web app, Max sometimes blows out the turn clock. Astra's updating the web app now to allow the user to switch between High and Max thinking levels on the fly.
- **2100432573901992175** · @__venki__ · 2026-09-17 · ♥81 ↻1 · cited on page · https://x.com/__venki__/status/2100432573901992175
  > Have a task that wants cheap text processing, and I’m trying all the cheap models. (Glm 5.3 flash, qwen 3.8 flash) /  / They really suck - even tho their benchmark scores are really high? I’m not sure they’re better than like Sonnet 3.7.
- **2100532216963153932** · @UnderwaterBepis · 2026-09-17 · ♥4 ↻1 · https://x.com/UnderwaterBepis/status/2100532216963153932
  > Phase 1 of this plan to get Kimi K3 running at home us done, I can run 30 tok/sec GLM 5.3 Flash or DS 4.1 Flash (80-90 tok/sec prefill) on total build cost $3-3.5k (depending on deals) will go up to $5-5.5k to get 1TB of RAM for Kimi K3
- **2101065234941395023** · @__venki__ · 2026-09-18 · ♥8 ↻1 · https://x.com/__venki__/status/2101065234941395023
  > Conclusion from my experiments: /  / Tested: Deepseek V4.1 flash, Qwen 3.8 flash, glm 5.3 flash, muse spark, gpt Luna /  / Roughly similar in price (avg $0.2-$0.8/task) /  / Muse was the cheapest and also the best by far (!!) - but this is with the 10x-20x data sharing subsidy. /  / Luna did quite quite poorly, very surprising, worst here many parsing errors, on priors would’ve guessed best if anything. /  / Deepseek…
- **2101773802418139526** · @Teknium · 2026-09-20 · ♥530 ↻33 · cited on page · https://x.com/Teknium/status/2101773802418139526
  > GLM-5.3 FlashX is now available in Hermes Agent through Nous Portal and OpenRouter! https://t.co/yoSljONuhh
- **2102447597848059952** · @aliceisplaying · 2026-09-22 · ♥29 ↻0 · cited on page · https://x.com/aliceisplaying/status/2102447597848059952
  > do not set glm-5.3-flash to max thinking, that model can overthink more than i do
- **2102858474963030391** · @MikePFrank · 2026-09-23 · ♥6 ↻2 · https://x.com/MikePFrank/status/2102858474963030391
  > Over the last couple of weeks since porting my Astra chess site over to use GLM-5.3 Flash instead to drive gameplay to reduce costs, there have been 35 games started by various users, at a total cost of $21.61. Thus, the average cost to operate the site so far has only been about $0.62 per game. Not bad! ☺️ / Free public beta at: https://t.co/EPn14xh7BN
- **2103841470864097344** · @RobertHaisfield · 2026-09-26 · ♥1 ↻0 · https://x.com/RobertHaisfield/status/2103841470864097344
  > @Nikos1337 GLM 5.3 and K3 are not in the same price range. GLM 5.3 Flash and Deepseek V4.1 Flash are in the same price range. /  / And testing on a representative set of Websim coding agent prompts! Similarly, GPT-6 Sol ends up being about half the cost of Gemini 3.8 Flash in practice.
- **2105309577365614634** · @aliceisplaying · 2026-09-30 · ♥48 ↻5 · cited on page · https://x.com/aliceisplaying/status/2105309577365614634
  > i still cant believe anthropic wrote a promo blogpost for glm-5.3-flash-abliterated
- **2106436439235756215** · @MikePFrank · 2026-10-03 · ♥0 ↻1 · cited on page · https://x.com/MikePFrank/status/2106436439235756215
  > Someone shared what I thought was a pretty interesting game against my Ox Alpha (GLM-5.3 Flash) powered chess bot at https://t.co/JyZIkbDurA. At one point it looked like the human was about to win, but Arcturus escaped and checkmated them instead. Replay: / https://t.co/GC7qezDxdL https://t.co/r6VzD83pzg
- **2106785513633882256** · @jitl · 2026-10-04 · ♥0 ↻0 · https://x.com/jitl/status/2106785513633882256
  > @fedor @felipecsl many open models still get really dumb at >half context full. GLM 5.3 Flash and Deepseek 4.1 Flash i’ve both noticed being rubes, forgetting all skills, etc. harness: codex
- **2107310969630171323** · @Nymne · 2026-10-06 · ♥2 ↻0 · https://x.com/Nymne/status/2107310969630171323
  > @bbishdotdev @thdxr Get the model to outsource all the testing to a second completely different model. GLM5.3-Flash does all my testing. Sure slower but saves usage and gets around the issue with tests designed to pass
- **2107502368451653943** · @jessi_cata · 2026-10-06 · ♥11 ↻0 · https://x.com/jessi_cata/status/2107502368451653943
  > based on a comment by GLM-5.3-Flash on https://t.co/LrtR3PzhyC which features eccentric AI diction /  / https://t.co/Zl0NyRASVr https://t.co/GqXOGjeoxy
- **2108645938403405896** · @NousResearch · 2026-10-09 · ♥43 ↻3 · https://x.com/NousResearch/status/2108645938403405896
  > Slight Correction: Step 5 Preview's final score on Hermes Index has been updated to 32.83, slightly behind GPT-6 Luna (33.89) and GLM 5.3 Flash (34.95) /  / Learn more @ https://t.co/GMkIS99T2r

## Impressions synthesis

- Stealth-week attribution game (Google pun, Gemini/GLM-5.2-finetune, Claude distillation); the strongest single reading: "100% second order distilled from a claude" (DanielleFong ♥137).
- Self-description during the stealth week names Claude as its "most *worthy* rival" and admits "I've almost certainly eaten its output during training" (LinXule screenshot/text, primed by an earlier conversation; provenance disputed).
- Working character split: level-headed (MikePFrank) vs overthinking at max (aliceisplaying, stevekrouse); cheap-task disappointment (__venki__).
- Routing suspicion (RUMOR) after Anthropic's Moonshot finding; no primary evidence.

## tk

- FlashX official description; image transcriptions (2090705647549768130, 2090739935770714169, 2090810235002724643, 2092154454217019894, 2107502368451653943, MikePFrank bot images); Chinese-language reception; r/LocalLLaMA ("Qwen 3.8 Flash-Next compared to GLM 5.3 Flash", post 1x6533a, and "Alignment on SOTA Chinese Models like Qwen 3.8 Flash Next / GLM 5.3 Flash", post 1x8meib, both via Arctic Shift — not yet triaged).