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Claude Mythos 5.1 product identity card
Model AI · PROFILE REVIEWED 7 OCTOBER 2026

Claude Mythos 5.1

A specialist pilot candidate when general safeguards block legitimate security work. Choose the tier around authorised actions, identity and retention before requesting access. The expanded CVP route supersedes the older Glasswing-only description; actual UK entitlement is not established. Independent same-task testing remains pending and no HubAI Score is assigned.

BEST FORVerified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable CVP tierNOT IDEAL FORVerification, route-specific provisioning and UK eligibility remain conditions of access
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USER RATING
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Price
Published base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.
Access
No unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmed
EDITORIAL PROFILEIndependently structuredPRICING CHECKSeparate check not recordedDISCLOSURENo pay-to-win scoreEVIDENCE CONFIDENCELow · independent test pending
BEFORE YOU BUY

Claude Mythos 5.1: evidence before purchase

Independent test pending

What we can verify

Not yet scored. No completed HubAI same-task test record is published. The supplier information below is separate from independent test results.

What an independent test needs to cover

Test output accuracy, retries, reviewer effort, data handling and total cost using the pilot below. No completion date is scheduled; a score will require a published method and results.

Supplier facts recorded
7 October 2026
Within 30-day review window. This is not an independent test date.
Methodology checked on

Price and UK access check

Published base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.

Pricing freshness: Check date not recorded.

VERIFIED CHANGE HISTORY

What changed for Claude Mythos 5.1.

Open Change Radar →
EDITOR VERDICT

A specialist pilot candidate when general safeguards block legitimate security work. Choose the tier around authorised actions, identity and retention before requesting access. The expanded CVP route supersedes the older Glasswing-only description; actual UK entitlement is not established. Independent same-task testing remains pending and no HubAI Score is assigned.

WHAT IT IS

Claude Mythos 5.1, explained.

Claude Mythos 5.1 is designed for verified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable cvp tier. HubAI treats it as a workflow purchase rather than a novelty: the relevant question is whether it produces an acceptable result repeatedly, with controls your team can understand and a cost that remains predictable after the trial ends.

Best forVerified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable CVP tierTrialNo unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmed
60-SECOND BUYING DECISION

Where Claude Mythos 5.1 fits—and where it does not.

BUY FOR

Verified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable CVP tier

MEASURE

accepted tasks completed with reliable tool use, bounded latency and a predictable total token bill

MAIN TRADE-OFF

Verification, route-specific provisioning and UK eligibility remain conditions of access

PROOF TEST

Use a fixed 20-task set containing routine, ambiguous, long-context and deliberate failure cases.

PRODUCT PROOF

See the workflow before you buy.

PROFILE REVIEW · 7 OCTOBER 2026
M5Official Mythos 5.1 model overview and CVP application guide; published API identifier claude-mythos-5-1, 1M context and 128K maximum output
01

Bring one representative input

02

Run the same job three times

03

Measure accepted output and cost

HUBAI TEST CONSOLE · MODEL AI
DATA & PRIVACY

CVP normally retains traffic for misuse monitoring. Individual grants do not support zero data retention; existing eligible organisational exemptions and the planned Enterprise Frontier Safeguards route have separate terms. Confirm actual retention, reviewers and processing region before using incident data.

DEPLOYMENT

Verified CVP access through approved first-party, cloud or supported third-party routes. Specialized Access is unavailable through third-party platforms. Confirm UK eligibility, linked accounts, assigned workspace/role and actual model provisioning; no universal UK entitlement is established.

WORKS WITH

Cyber Verification Program · Claude API · Claude Code · Approved cloud routes

EDITORIAL STATUS

Vendor facts and HubAI opinion are separated. Sponsored placement cannot buy a higher score.

HUBAI PROCUREMENT PASSPORT

A buying record your team can challenge.

One compact record for price, access, data handling, deployment and the test that must pass before adoption.

BUY FORVerified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable CVP tierCOMMERCIAL ROUTEPublished base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.No unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmedTEST PENDING
DATA & PRIVACYNeeds buyer verification

CVP normally retains traffic for misuse monitoring. Individual grants do not support zero data retention; existing eligible organisational exemptions and the planned Enterprise Frontier Safeguards route have separate terms. Confirm actual retention, reviewers and processing region before using incident data.

DEPLOYMENTRoute mapped

Verified CVP access through approved first-party, cloud or supported third-party routes. Specialized Access is unavailable through third-party platforms. Confirm UK eligibility, linked accounts, assigned workspace/role and actual model provisioning; no universal UK entitlement is established.

INTEGRATIONS4 named routes

Cyber Verification Program · Claude API · Claude Code · Approved cloud routes

PROOF TESTRequired before scale

Verify the approved tier, target authorisation, UK route, paid-plan or API billing, retention and incident owner. Prepare phishing-resistant MFA and short-lived identities, then compare accepted findings, analyst time, failure recovery and complete billed cost on a frozen authorised task set. Test pending; no score.

Official-source facts HubAI editorial judgement Buyer verification still requiredProfile checked 7 October 2026
INDEPENDENT TEST PENDING

No launch-day score.

HubAI will publish a score only after the same representative tasks have been run against current alternatives. Vendor benchmarks are not treated as an editorial rating.

STRENGTHS

What earns its shortlist place.

+01

Defined Defense, Red Team and Specialized Access scopes provide a clearer security application route

Why it matters: reduces time per accepted complex task.

+02

Published model identifier and base token rates support a reproducible cost estimate

Why it matters: supports larger source or code contexts.

+03

Documented security requirements make identity and operational readiness reviewable

Why it matters: gives technical teams more control over quality and spend.

LIMITATIONS

What can break the business case.

−01

Verification, route-specific provisioning and UK eligibility remain conditions of access

Buyer impact: can make headline token prices misleading.

−02

Retention is normally required; individual grants do not offer zero data retention

Buyer impact: creates migration and regression-test work.

−03

Stricter tiers require additional identity, device and network controls; approval is not independent evidence of safety

Buyer impact: requires operational monitoring beyond a chat demo.

Cost reality

The subscription price is only the starting point. HubAI evaluates usage limits, failed attempts and the work needed to produce one usable result. Pricing changes frequently, so the structure and verification date matter more than a headline price.

PRICING DECODER

Budget for the result, not the plan badge.

Published structure
Published base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.
Free or trial route
No unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmed
Primary cost driver
input/output tokens, repeated agent steps, tool calls, caching and failed runs
Budget test
Record the total cost, attempts and human correction needed to produce ten accepted results.

Separate pricing check date: not recorded. Profile review: 7 October 2026. Confirm live price, VAT, region, usage rights and cancellation terms with the vendor before purchase.

HUBAI TRUE COST LAB

What does one accepted result really cost?

Model your own usage. HubAI separates subscription cost from retries and human review—without pretending a headline plan price tells the whole story.

DERIVED VALUE · EFFECTIVE COST / ACCEPTED OUTPUT£3.414286Human review dominates
Expected accepted outputs70
Expected unaccepted attempts30
Cost compositionper accepted output
Software £0.414286Human review £3.00Overhead £0.00
Human review minutes apply to accepted outputs only. Include review of unsuccessful attempts in monthly overhead. Evidence labels: the published price reference is SOURCE DATA; every editable number is USER INPUT / ASSUMPTION; totals are DERIVED VALUES. Run a representative batch and count only outputs your team would genuinely publish or use. This scenario is not a vendor quote or financial advice.
PRACTICAL GUIDE

Where Claude Mythos 5.1 earns its place.

01

Build and test a long-running coding agent

Test this job with your own inputs and judge the finished result—not the first draft.

02

Run multi-file refactoring with deterministic tool calls

Test this job with your own inputs and judge the finished result—not the first draft.

03

Evaluate a complex enterprise workflow against cost and latency

Test this job with your own inputs and judge the finished result—not the first draft.

A safer four-step trial

  1. Start with one narrow job that matches Claude Mythos 5.1's strongest use case.
  2. Prepare approved source material, examples and a clear acceptance standard.
  3. Run three realistic tasks and record attempts, correction time and export quality.
  4. Keep human approval before publishing, sending or acting on the result.
READY-TO-USE PROMPTS

Start with a better brief.

01Act as a specialist in model ai. Ask me three questions before creating the first draft. The outcome I need is: [describe outcome].
02Create two approaches for [task]. Use this audience: [audience]. Respect these constraints: [constraints]. Explain the trade-off between the two approaches.
03Review this output against accuracy, tone, privacy, cost and usability. List the changes required before a person should approve it.
RISK & GOVERNANCE

What to check before adoption.

Do not place confidential, personal or rights-restricted material into Claude Mythos 5.1 until your organisation has reviewed its current terms, retention settings and account controls. AI output can be plausible and still wrong; regulated, financial, legal and employment decisions require qualified human review.

HUBAI REVIEW RECORD

What HubAI checked—and when.

This is HubAI's editorial record, not the vendor's product changelog or a live uptime claim.

04 SEP 2026

Decision layer expanded

Use-case routes, relevant comparisons and alternatives connected to the product profile.

03 SEP 2026

Commercial profile reviewed

Entry price structure, free or trial route and buyer limitations checked for editorial use.

02 SEP 2026

Editorial profile published

Verdict, best fit, strengths, limitations, prompts and governance questions structured.

ALSO SHORTLIST

Alternatives to Claude Mythos 5.1

QUICK COMPARISON

Claude Mythos 5.1 against its closest shelf.

Scores are editorial signals, not a universal winner. Choose around the exact job and run the same proof test.

ProductHubAI scoreBest forPrice structureAccessDecision
Claude Mythos 5.1 CURRENTTest pendingVerified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable CVP tierPublished base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.No unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmedCurrent profile
Muse WonderTest pendingA measured pilot of long-context coding or reasoning through Meta's hosted APIUSD per million tokens: $4 input, $0.20 cached input, $20 output. Web grounding adds $2.50 per 1,000 search queries; no long-context premium is listed. · Recorded check: 14 October 2026. USD list price; UK price/VAT to confirm.Paid preview API or Muse Code subscription. No unmetered free trial or UK-specific entitlement verified.Compare →
Muse Wonder FullTest pendingEvaluating the higher-capability Muse model inside an eligible coding subscriptionMuse Code Power Usage $50/month or Maximum $200/month, USD list prices. These are subscription prices, not Full API token rates. · Recorded check: 14 October 2026. USD list price; UK price/VAT to confirm.Subscription-only route; no public pay-as-you-go API or unmetered trial verified. Confirm UK account eligibility before paying.Compare →
Claude Haiku 5.5Test pendingNarrow, repeated classification, extraction, routing, compaction and subagent work with measured acceptance rulesUSD per million tokens: prompts up to 100K input $0.10/output $0.50; above 100K input $0.50/output $2.50. Cache reads $0.01/$0.05; five-minute writes $0.125/$0.625. Cloud routing, tools and taxes can differ. · Recorded check: 8 October 2026. USD list price; UK price/VAT to confirm.Metered API access; no unmetered free trial verified. Eligible Max/Team API credits have separate rollout, eligibility and expiry rules. UK account and regional provisioning must be confirmed.Compare →
PROCUREMENT CHECKLIST

Questions to answer before adoption.

  1. 01Which model and version is actually included?
  2. 02Can administrators control retention and model training?
  3. 03What happens when a tool call fails?
  4. 04Can usage, latency and cost be exported?
COMMON BUYER QUESTIONS

Claude Mythos 5.1 FAQ.

What is Claude Mythos 5.1 best for?

Claude Mythos 5.1 is best suited to verified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable cvp tier. HubAI's current verdict is: A specialist pilot candidate when general safeguards block legitimate security work. Choose the tier around authorised actions, identity and retention before requesting access. The expanded CVP route supersedes the older Glasswing-only description; actual UK entitlement is not established. Independent same-task testing remains pending and no HubAI Score is assigned.

Does Claude Mythos 5.1 have a free plan or trial?

No unrestricted public trial. CVP application and provisioning are required; individuals can apply only for Defense Access on a paid plan. UK account and route eligibility must be confirmed. Check the official product page before buying because allowances, regions and eligibility can change.

How much does Claude Mythos 5.1 cost?

Published base API rates: $10 per 1M input tokens and $50 per 1M output tokens. Programme approval does not include free usage or establish a complete CVP price; cloud contracts and application-plan billing need separate confirmation · Profile record only; separate pricing check not recorded: 7 October 2026. USD list price; UK price/VAT to confirm.. The useful comparison is total cost per accepted result, including retries, limits and human correction—not the advertised entry price alone.

What should I compare with Claude Mythos 5.1?

Compare products in the same Model AI shelf against one identical task, acceptance rule and cost window. Focus on accepted tasks completed with reliable tool use, bounded latency and a predictable total token bill.

MODERATED COMMUNITY REVIEWS

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Rate this product and share what really happened. Every review is moderated before it appears publicly. Approval does not independently verify purchase, usage or the reported outcome.

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