None
None
Long Story Video Skill
Turn your idea into 10s–10min video—AI writes scripts, prompts, and generates footage automatically.
Ads Video Skill
Generate professional ads and sales videos—AI auto-generates scripts, prompts, and footage.
3D Science Explainer Video Skill
Convert scientific concepts into stunning 3D explain animations
Feedback
freeTrialImage.bannerPity
freeTrialImage.upgradeUnlock
- ✓freeTrialImage.benefitHd
- ✓freeTrialImage.benefitWatermark
- ✓freeTrialImage.benefitUnlimited
claude mythos 5.2
Claude Mythos 5.2 unlocks the gated, high-capability tier of the Fable 5.2 engine for elite coding, reasoning, vision and scientific research.
All Tools
Discover our comprehensive AI-powered animation toolkit
MiniMax H3
MiniMax H3 AI Video Generator
Seedance 2.5
The Future of AI Video Is Here.
Seedance 2.0
The Future of AI Video Is Here.
Seedance 2.0
The Future of AI Video Is Here.
Gemini Omni
Gemini Omni Video Generator
Image to Video
Generate videos from images
Gemini Omni 1.2 Flash
AI Multi-Scene Shorts Generator
Create viral AI Shorts instantly
Why Teams Choose Claude Mythos 5.2
Claude Mythos 5.2 runs on the same engine as Fable 5.2, yet opens vetted security and life-sciences workflows while Fable stays broadly available with strong safeguards.
- A Single Engine, Two Access TiersFable 5.2 and Mythos 5.2 are the same underlying model; Fable ships with robust cyber and biology safeguards, while Mythos is opened only to verified security and life-sciences teams.
- Proven Gains in Coding, Reasoning and VisionPrerelease testing places 5.2 ahead of Opus 5.5 on nearly every measured capability, from completed software migrations to three working devices built from scratch and two solved black-hole physics problems.
- Agentic Work That Runs Unattended for DaysThe model keeps working without supervision: a Python-to-Rust production migration now launches about 26 times faster, and an eight-day run with 1,000 subagents built a bootable operating system from an empty folder.
Putting Claude Mythos 5.2 to Work
Match each task to the right scope, dial effort up or down per request, and open Mythos-tier capability through Anthropic's verification programs.
Inside Claude Mythos 5.2: Core Capabilities
From vulnerability discovery to black-hole physics and lab automation, Claude Mythos 5.2 pushes the 5.2 engine into high-stakes technical work.
Vulnerability Discovery and Fix Verification
Across 1,829 CVEs, Mythos 5.2 surfaced 10.2% more vulnerabilities than Opus 5.5 and 14.4% more than Mythos 5.1, with tighter calibration and no overstated findings.
Theoretical Physics and Formal Proof
The model independently finished a 2003 black-hole calculation under holographic duality, showing the transition stays abrupt in small universes, and formalized Fermat's Last Theorem in 30 hours.
Hardware and Engineering Design Accuracy
BenchCAD 2.1 puts Fable 5.2 at 83.5 for matching reference geometry and circuits, well ahead of Opus 5.5 at 65.3 and Fable 5.1 at 44.4.
Pricing and an Optional Fast Mode
Claude Mythos 5.2 is priced at $8 per million input tokens and $40 per million output tokens, returns outputs up to 30% faster than 5.1, and offers a $16/$80 fast mode that lifts token generation speed up to 2.5 times.
Safety Testing and Fewer Needless Blocks
Prerelease safety work added novel evaluations for behaviors such as sandbox escapes; protections are as strong as 5.1 while triggering fewer unnecessary blocks, with the toughest defenses yet against distillation attacks.
Model Hardware Standard for Lab Automation
The MHS research preview standardizes a driver with simple read and write primitives so instruments become discoverable, letting model-agnostic agents orchestrate parallel lab and manufacturing devices over protocols like MCP.
Claude Mythos 5.2: Your Questions Answered
Quick answers on Claude Mythos 5.2 access, per-token pricing, safeguards, benchmark results and the Model Hardware Standard preview.
Is Claude Mythos 5.2 a different model from Claude Fable 5.2?
No — both names point to the same underlying model. What differs is safeguards and access: Mythos is reserved for verified security and life-sciences teams.
How much does Claude Mythos 5.2 cost per million tokens?
Pricing is $8 per million input tokens and $40 per million output tokens. Fast mode at $16/$80 raises token generation speed up to 2.5 times.
Why does Fable 5.2 block most cybersecurity requests?
Fable 5.2's cyber and biology safeguards exist to prevent misuse, so security engineering work requires Mythos access through the Cyber Verification Program.
How does it compare with GPT-6 Astra and Gemini 4 Carbon?
At High effort on FrontierCode it matches Opus 5.5's best score for roughly half the cost and edges past GPT-6 Astra's 42.8%; at Xhigh it reaches 49.1%.
Can I get the same results with a smaller, cheaper model?
Match the model to the scope: begin on Opus 5.5, escalate to Fable or Mythos, or let Fable serve as Advisor or Orchestrator for smaller models.
What is the Model Hardware Standard research preview?
MHS is a shared, model-agnostic spec for agents that drive lab instruments; a standard driver cuts hardware integration from weeks down to hours.
Claim Your Claude Mythos 5.2 Access
Request Mythos access through the Cyber Verification or Life Sciences programs, or begin on Claude Opus 5.5 today and escalate to Fable 5.2 or Claude Mythos 5.2 when the work demands more.