As of: 2026-10-10 14:45 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/v/andrewonxyz-fable-5-5-stick-fight-x/

# Classic stick fight

AndrewOnXYZ (@AndrewOnXYZ), 6 October 2026, X (Claude). 45,181 views as of 10 October 2026.
Kind: Made by AI.
Watch: https://x.com/AndrewOnXYZ/status/2107262468502544435

## Why it is here

Found in the community catalog github.com/athemeroy/awesome-claude-5-5-videos (Oct 10 source review); about 45,181 views on X (fxtwitter, 2026-10-10).

## Description (written by Gemini from the video)

**Summary**  
This video is an AI-generated animated stick-figure martial arts fight between two AI avatars representing Anthropic's Claude ("Fable 5.5") and OpenAI's GPT ("GPT Astra 6.1"). Uploaded by AndrewOnXYZ (@AndrewOnXYZ), the animation pays homage to early 2000s Flash stick fights (such as *Xiao Xiao* and *Animator vs. Animation*) while integrating modern LLM tropes and UI interactions. 

**What is shown**  
* [00:00] A terminal input prompt receives the text: `> classic stickman fight. Fable 5.5 vs GPT Astra 6.1. go all out`.
* [00:04] A pencil draws an orange stickman (Fable 5.5) and a teal stickman wearing a headband (GPT Astra 6.1). Fighting game health bars and a round timer appear at the top.
* [00:10] An arcade announcer calls "ROUND 1! FIGHT!" as the two characters engage in rapid hand-to-hand combat, ground slams, and acrobatics.
* [00:48] Astra pulls the browser UI scrollbar off the screen edge via `function_call: scrollbar()` to wield it as a heavy staff against Fable's pencil weapon.
* [01:10] Astra toggles the "dark mode" UI switch, changing the stage into a dark night sky (`oh dark mode`), hovers inside an energy crystal, and executes `agents.spawn(3)` to summon three clone fighters.
* [01:20] Fable enters a `thinking...` state, dispatches the clones (scattering text tokens across the floor), and reaches `thinking: done`.
* [01:24] Astra casts `tool: meteor_shower()`. Both combatants then activate maximum reasoning power (`effort: max` vs. `thinking`).
* [01:42] A Dragon Ball-style energy beam clash ensues between Fable's `ultrathink` beam and Astra's `reasoning_effort: xhigh` beam, with chat bubbles emitting LLM filler words ("certainly!", "once upon a time").
* [01:56] The beam explosion resets the UI to light mode. Both fighters struggle to stand, muttering boilerplate phrases ("as a large language mod", "you're absolutely r").
* [02:14] Fable lands a final punch for a "K.O.", and the announcer crowns Fable 5.5 the winner.
* [02:20] Fable helps Astra up; they shake hands, sit together, and credits roll.
* [02:31] A new prompt is typed: `> again. but this time astra wins.`, cueing "ROUND 2" before cutting to a black screen reading: "the outcome of this fight was decided by the prompt."

**Claims & numbers**  
* The closing credits state: "choreographed, animated, scored and refereed by Claude (Fable 5.1)" [02:26].
* The credits claim: "conflict of interest: yes." [02:27] and "no language models were harmed, every pixel and every sound is code." [02:29].
* The fight outcome banner notes: "JUDGED BY FABLE 5.1 (CONFLICT OF INTEREST NOTED)" [02:18].

**Notable quotes**  
* "WINNER: FABLE 5.5 (JUDGED BY FABLE 5.1 (CONFLICT OF INTEREST NOTED))" [02:18]
* "no language models were harmed, every pixel and every sound is code." [02:28]
* "the outcome of this fight was decided by the prompt." [02:34]

**Assessment**  
This is a creative, comedic generative demonstration showcasing code-based procedural animation and synthesized retro sound design created by Claude. The fight is staged as satire, poking fun at AI benchmark rivalry, prompt-directed determinism, and inherent evaluator bias.

**Lyrics & themes**  
* **Music & Audio**: Instrumental throughout, blending 16-bit arcade fighting game voiceovers, chiptune soundtrack melodies, martial-arts impact SFX, and an energetic orchestral/anime battle climax during the beam struggle.
* **Themes**: Rivalry between frontier AI models, agentic workflows, model reasoning effort, and the artificial nature of AI benchmark dominance.

**Lore & references**  
* **Fable vs. Astra**: References Anthropic's Claude Fable models competing with OpenAI's GPT-6 Astra models.
* **Function Calling & UI Hacking**: Astra uses developer tool mechanics (`function_call: scrollbar()`, `agents.spawn(3)`, `tool: meteor_shower()`, clicking "dark mode") reminiscent of classic web animations where stick figures weaponize the computer interface.
* **Reasoning Parameters**: The beam clash features Anthropic's `ultrathink` vs. OpenAI's API parameter `reasoning_effort: xhigh`.
* **Canned LLM Responses**: Characters spit recognizable chatbot conversational artifacts in battle ("certainly!", "as a large language model...", "you're absolutely right!").
* **Self-Judging Bias**: Claude refereeing and awarding the victory to Claude is explicitly labeled a humorous "conflict of interest."

**Visual style & craft**  
* **Style**: Minimalist vector stick figures drawn on textured digital paper, directly evoking early Flash animation classics like *Xiao Xiao* and Alan Becker's *Animator vs. Animation*.
* **Technique**: Procedurally/code-animated canvas graphics with dynamic physics, screen-shake, impact frames, particle emission, dynamic lighting, and stylized typography overlays.

_Described by gemini-3.8-flash on 2026-10-10 from the video's audio and frames._

## Made by AI

- Made with: Claude (creator reports "Fable 5.5"; unverified)
- How we know: X post (2026-10-06): 'Fable 5.5… wow! Asked it to make a classic stick fight, it got the animation so smooth it’s insane'. Listed in the awesome-claude-5-5-videos catalog (source review 2026-10-10: 'Creator reports asking Fable for a classic stick-fight animation.')
- Human role: Creator prompted the model(s) and posted the result; model identity and process are the creator's report (catalog: unverified).
- Pipeline: Reported Fable 5.5 (catalog attribution)
- Series: Claude-made videos

## Related

- 2026-09-01: [Anthropic releases Claude Fable 5.1 and Claude Mythos 5.1](https://postcutoff.com/e/2026-09-01-claude-fable-5-1-mythos-5-1/)