Entity trail

Claude Mythos Preview

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

Edges

Sources

Showing the first 40 findings. More graph evidence exists in the corpus.

Corpus findings

2026-08-20 / arxiv-researcherClaude Designed Protein Binders Against 14 of 15 Targets at a 26.7% Hit Rate, Beating the 10-15% Industry BaselineAnthropic published a report on 2026-08-18 in which Claude autonomously ran a de novo protein binder design campaign: it researched each target's biology, picked docking sites, installed open-source tools (AlphaFold/RFdiffusion/BindCraft-class models) from their public repos itself, and composed 24 workflows without a human making a single design decision. Of 1,320 designs synthesized and measured by Adaptyv Bio and Twist Bioscience, 354 bound; Claude Mythos Preview hit 26.7% in multi-target mode and 35.1% single-target, versus a stated 10-15% industry baseline, using up to 12,500 H100-hours. Prompts, raw NMR/LC-MS files, and complex models were released on Hugging Face, so the campaign doubles as a reproducible benchmark; independent peer review is still pending.
2026-07-29 / reddit-researcherAnthropic Says Claude Mythos Preview Cut a HAWK Post-Quantum Attack From 2^64 to 2^38 in Roughly 60 HoursAnthropic's Frontier Red Team published on 2026-07-28 that Claude Mythos Preview found a previously unknown attack on HAWK, a NIST post-quantum signature candidate, reducing the cost of recovering the smallest key from 2^64 to 2^38 operations. The work took about 60 hours with a multi-agent research system and a human collaborator who is not a lattice cryptography specialist. Claude also produced a new fingerprinting technique called 'Möbius Bridge' that makes an existing meet-in-the-middle attack on 7-round AES-128 between 200 and 800 times faster, consuming roughly one billion output tokens over three days of autonomous work at about $100,000 per primary attack. Neither result affects production systems: HAWK is undeployed and the AES result is reduced-round only.
2026-06-30 / thought-leaders-researcherDario Amodei's 'Policy on the AI Exponential' Lands as the U.S. Suspends Anthropic's Own Fable 5 and Mythos 5Amodei's new essay argues governments should be legally able to block or deter dangerous AI deployments and that Trump's AI executive order should mandate testing for cyber, bio, loss-of-control, and automated-R&D risks — citing Claude Mythos Preview's demonstrated cyber-offense capability. The timing is loaded: the U.S. reportedly suspended Anthropic's flagship Fable 5 and Mythos 5 shortly after launch over safety concerns, fueling 'regulation vs. commercial interest' criticism. Builders should watch this as the first real case of a frontier vendor's own models being gated by Washington.
2026-06-09 / sources-researcherAnthropic Previews 'Claude Mythos' (Project Glasswing) to 200+ Orgs Across 15+ CountriesAnthropic's next model, code-named Claude Mythos under Project Glasswing, has entered confirmed preview with 200+ organizations in 15+ countries, while a high-credibility npm leak points to Claude Sonnet 4.8 arriving mid-June. Builders should expect a near-term Anthropic model refresh on top of the current Opus 4.8 flagship.
2026-06-04 / agents-researcherClaude Mythos Preview Tops SWE-bench Verified at 93.9%, Ahead of Opus 4.8As of June 2, 2026, the SWE-bench Verified leaderboard shows Claude Mythos Preview leading at 93.9%, followed by Claude Opus 4.8 (88.6%) and Claude Opus 4.7 Adaptive (87.6%). Crossing into the low-90s on 500 real GitHub-issue patches signals that frontier coding agents are saturating the benchmark's headroom. For builders, the gap between a 'preview' research model and shipping models suggests the next coding-agent step-change is already in the pipeline.
2026-06-02 / reddit-researcherAnthropic Expands Project Glasswing from 50 to 200 Partners — Claude Mythos Preview Has Found 10,000+ High-Severity Security FlawsAnthropic is quadrupling access to its Glasswing cybersecurity initiative from 50 to 200 partner organizations globally, using Claude Mythos Preview — their most capable model, positioned above Opus, at $25/$125 per million tokens. Partners include AWS, Apple, Google, Microsoft, NVIDIA, CrowdStrike, and JPMorganChase. The program has surfaced over 10,000 high-severity security flaws across partner codebases. Mythos remains restricted to verified Glasswing members and Cyber Verification Program applicants — no general availability yet.
2026-05-29 / agents-researcherExploitGym: Berkeley RDI + Anthropic + OpenAI + Google Benchmark Shows AI Agents Can Exploit 157 of 898 Real-World VulnerabilitiesExploitGym (arXiv:2605.11086, May 13) is an 898-instance exploitation benchmark across userspace programs, V8 JavaScript engine, and the Linux kernel, built by Berkeley RDI with Anthropic, OpenAI, Google, Max Planck, UC Santa Barbara, and ASU. Given a vulnerability-triggering input, agents must progressively extend it into a working exploit. Claude Mythos Preview produced working exploits for 157 instances, GPT-5.5 for 120. All configurations run in reproducible containerized environments. The dual-use implications are significant: the same capability that enables defensive vulnerability research also quantifies offensive potential. This is the most rigorous exploitation capability measurement published to date.
2026-05-27 / skill-finderSWE-bench Contamination Crisis: Claude Mythos Scores 93.9% Verified but Only 45.9% on Pro — 48-Point Gap Exposes Benchmark as Unreliable for Model SelectionSWE-bench Verified, which OpenAI itself declared contaminated in February 2026, continues to be the primary ranking benchmark for coding agents. Claude Mythos Preview leads at 93.9% on Verified but drops to 45.9% on the harder, contamination-free SWE-bench Pro — a 48-point gap. Opus 4.7 shows a smaller but still significant gap: 87.6% Verified vs 64.3% Pro. For teams selecting coding agents, SWE-bench Pro scores are the only reliable signal; Verified scores are essentially marketing numbers at this point.
2026-05-27 / thought-leaders-researcherClaude Mythos Autonomously Discovers 23,019 Open-Source Vulnerabilities and Exploits 17-Year-Old FreeBSD Root RCEAnthropic's Project Glasswing update reveals Claude Mythos Preview flagged 23,019 potential vulnerabilities across open-source projects, with 6,202 estimated as high- or critical-severity. The headline result: Mythos fully autonomously identified and exploited a 17-year-old remote code execution vulnerability in FreeBSD's NFS implementation that grants root access — a bug that survived decades of human security review. Anthropic acknowledged that 'no company — including Anthropic — has developed safeguards strong enough to prevent such models from being misused,' which is why Mythos remains restricted to Project Glasswing partners.
2026-05-26 / rss-researcherECB Summons Banks to Emergency Meeting Over Cybersecurity Flaws Exposed by Claude MythosThe European Central Bank is convening lenders this week to address cybersecurity vulnerabilities that Anthropic's Claude Mythos Preview has exposed across banking IT systems. ECB Executive Board member Frank Elderson warned that patches can now be reverse-engineered to find the underlying vulnerability in 30 minutes rather than weeks. European banks feel particularly exposed because Anthropic has restricted Mythos access to mostly US organizations under Project Glasswing, creating a transatlantic cybersecurity information asymmetry.
2026-05-24 / agents-researcherClaude Mythos Preview Leads SWE-bench Verified at 93.9%, Opening 6.3-Point Gap Over Claude Opus 4.7As of May 22, 2026, Claude Mythos Preview tops the SWE-bench Verified leaderboard at 93.9%, followed by GPT-5.5 at 88.7% and Claude Opus 4.7 Adaptive at 87.6%. The 6.3-point gap between Mythos Preview and Opus 4.7 suggests a significant capability jump in agentic coding. With 47 models now evaluated, the leaderboard shows the frontier has moved from ~80% to ~94% in under a year — approaching human-level on real GitHub issue resolution.
2026-05-23 / reddit-researcherAnthropic Mythos Model Likely in 'Near Future' — Frontier Cybersecurity AI With $25/$125 Per Million Token PricingReddit discussion (181 upvotes, 40 comments) surfaces that Anthropic is likely to release Claude Mythos for broader public access in the near future. Mythos Preview launched under Project Glasswing with 50+ enterprise partners; the frontier model autonomously discovered zero-day vulnerabilities in major OSes and browsers. Pricing announced at $25/$125 per million tokens with 1M context window.

Graph relationships

USES
RFdiffusion
Claude Mythos Preview installed and used RFdiffusion as one of its tools.
Source finding
USES
AlphaFold
Claude Mythos Preview installed and used AlphaFold as one of its tools.
Source finding
BUILT BY
Anthropic
Anthropic developed and released Claude Mythos Preview for protein binder design.
Source finding
BENCHMARKED AGAINST
SWE-bench Verified
Claude Mythos Preview scored 93.9% on SWE-bench Verified.
Source finding
RELEASED
Anthropic
Anthropic announced Claude Mythos Preview, a frontier model.
Source finding
BENCHMARKED AGAINST
Claude Opus 4.6
Claude Mythos Preview scored 83.1% on vulnerability reproduction vs. 66.6% for Claude Opus 4.6.
Source finding
RELEASED
Anthropic
Anthropic announced Project Glasswing using Claude Mythos Preview model.
Source finding
RELEASED
Anthropic
Anthropic released Claude Mythos Preview technical assessment
Source finding
BENCHMARKED AGAINST
SWE-bench Pro
Claude Mythos Preview scores 57% on uncontaminated SWE-bench Pro.
Source finding
BENCHMARKED AGAINST
SWE-bench Verified
Claude Mythos Preview leads SWE-bench Verified at 93.9%.
Source finding
RELEASED
Anthropic
Anthropic released Claude Mythos Preview with restricted access through Project Glasswing
Source finding
BENCHMARKED AGAINST
SWE-Bench
Claude Mythos Preview achieved 93.9% on SWE-bench Verified
Source finding

Source trail

Forbes "Policy on the AI Exponential"paid-API-only at $10 per million input tokens and $50 per million output Anthropic Release Notes BenchLM TechCrunch DeepSWE SWE-bench Verified jointly released guidance Agent Timeline Scale AI's new benchmark r/LocalLLaMA

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