text model comparison

Claude Mythos 5.2 vs GPT-5.6 Cyber

Claude Mythos 5.2 and GPT-5.6 Cyber are both current text models, from Anthropic and OpenAI. Claude Mythos 5.2 is 36% cheaper per 1M input tokens than GPT-5.6 Cyber, $8 vs $12.50. Claude Mythos 5.2 has the larger context window, 1,000,000 vs 400,000 tokens.

Lower price per 1M input tokens: Claude Mythos 5.2$8 against $12.50
Longer context window: Claude Mythos 5.21M tokens against 400K tokens
Newer release: Claude Mythos 5.2Nov 2026 against Aug 2026

Data verified November 10, 2026 · Dataset 2026-11-10

Claude Mythos 5.2 and GPT-5.6 Cyber, line by line

Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.

Fact	Claude Mythos 5.2	GPT-5.6 Cyber
Price
Price per 1M input tokens	$8 (better)	$12.50
Price per 1M output tokens	$40 (better)	$75
Specs
Provider	Anthropic	OpenAI
Release date	November 9, 2026	August 10, 2026
Access	limited access	limited access
Context window	1,000,000 tokens	400,000 tokens
Max output	128,000 tokens	128,000 tokens
Input	text, image	text, image
Output	text	text

Charts

Against every current text model

Where Claude Mythos 5.2 and GPT-5.6 Cyber land among the current models of their task, on every independent benchmark, on price and on context.

Where each stands

No independent benchmark has scored either model yet, so the tiles rank their prices among the current models of their task.

Price and context

Price per 1M input tokens

Claude Mythos 5.2:#53of 61

$8 · cheaper than 12%

GPT-5.6 Cyber:#59of 61

$12.50 · cheaper than 3%

Price per 1M output tokens

Claude Mythos 5.2:#53of 61

$40 · cheaper than 12%

GPT-5.6 Cyber:#59of 61

$75 · cheaper than 2%

Context window

Claude Mythos 5.2:#28of 70

1M tokens · longer than 23%

GPT-5.6 Cyber:#59of 70

400K tokens · longer than 16%

Cost

What each costs

Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.

The same work, priced

For 10M input and 2M output tokens, GPT-5.6 Cyber costs 1.7 times as much as Claude Mythos 5.2, at each provider's listed rates.

10M input and 2M output tokens
GPT-5.6 Cyber costs 1.7× as much
Claude Mythos 5.2
$160
GPT-5.6 Cyber
$275
The same, with 9M of the input tokens cached
GPT-5.6 Cyber costs 1.9× as much
Claude Mythos 5.2
$89.80
GPT-5.6 Cyber
$173.75

Workload or rate	Claude Mythos 5.2	GPT-5.6 Cyber
Example workloads
10M input and 2M output tokens	$160 (better)	$275
The same, with 9M of the input tokens cached	$89.80 (better)	$173.75
The same, through the batch API	$80	Not listed
Other listed rates
1M input tokens, cached	$0.20 (better)	$1.25
1M input tokens, 5-minute cache write	$10	Not listed
1M input tokens, 1-hour cache write	$16	Not listed
1M input tokens, batch	$4	Not listed
1M output tokens, batch	$20	Not listed

Your own bill will differ. These figures use list prices and example workloads. The AI Model Cost Audit reviews your real usage, shortlists models that score as well for each task for less, and estimates the savings.

Launch price $100, regular price $150

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Verdict

When to choose each

Claude Mythos 5.2

Where it leads

Lower input and output prices, $8 and $40 vs $12.50 and $75 per 1M tokens
Larger context window 1,000,000 vs 400,000 tokens
Cheaper cached input, $0.20 vs $1.25 per 1M tokens
Batch pricing, $4 input and $20 output per 1M tokens

Best for

Vetted security teams finding, reproducing and fixing vulnerabilities
Dual-use research in security or biology that Claude Fable 5.2's safeguards block

Watch out for

Limited access: only organisations verified through Anthropic's programs, such as the Cyber Verification Program, can call it
No independent benchmark has scored it; every number for it comes from Anthropic

Full Claude Mythos 5.2 profile

GPT-5.6 Cyber

Where it leads

No measured lead over Claude Mythos 5.2 in this data.

Best for

Daybreak Red teams that need exploit validation and security testing at a lower price than GPT-6 Cyber

Watch out for

Limited access: available only to approved Daybreak Red customers
OpenAI rates it High but not Critical in cybersecurity, and says it sometimes writes shorter, less detailed vulnerability reports than GPT-5.6 Sol
OpenAI's newer GPT-6 Cyber (November 5, 2026) scores 48.5% on ExploitGym in OpenAI's chart, against 32.1% for this model; no independent benchmark score is recorded here

Full GPT-5.6 Cyber profile

From benchmark to production

Building on Claude Mythos 5.2 or GPT-5.6 Cyber?

Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.

AI Model Cost AuditLaunch price $100, regular price $150What the audit includes

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FAQ

Claude Mythos 5.2 vs GPT-5.6 Cyber FAQ

Which is cheaper, Claude Mythos 5.2 or GPT-5.6 Cyber?

Claude Mythos 5.2 is 36% cheaper per 1M input tokens than GPT-5.6 Cyber, $8 vs $12.50. For 10M input and 2M output tokens, Claude Mythos 5.2 costs $160 and GPT-5.6 Cyber $275 at standard rates.

Which is cheaper with prompt caching, Claude Mythos 5.2 or GPT-5.6 Cyber?

Claude Mythos 5.2 charges $0.20 per 1M cached input tokens, 98% below its standard input rate, and GPT-5.6 Cyber $1.25, 90% below. With 9M of 10M input tokens cached and 2M output tokens, Claude Mythos 5.2 costs $89.80 and GPT-5.6 Cyber $173.75.

Which has the larger context window, Claude Mythos 5.2 or GPT-5.6 Cyber?

Claude Mythos 5.2 has the larger context window, 1,000,000 vs 400,000 tokens. Both return up to 128,000 tokens per response.

Choosing between Claude Mythos 5.2 and GPT-5.6 Cyber?

Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.

A head-to-head evaluation on your real workload
Routing between models by cost and difficulty

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