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Claude Mythos 5.2 vs Claude Mythos Preview

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 53.8. Claude Mythos 5.2 is 3.1x cheaper per token.

Anthropic · Anthropic · Updated for 2026

Which is better?

Claude Mythos 5.2 leads the overall LLM Stats Score 59.6 to 53.8, ranking #2 overall.

On price, Claude Mythos 5.2 is roughly 3.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Mythos 5.2

  • overall performance matters — it scores 59.6 and ranks #2 on LLM Stats
  • your work emphasizes agents — it leads those capability indexes
  • cost matters — it's about 3.1x cheaper per token

Choose Claude Mythos Preview

  • you want predictable pricing at $25.00/M input and $125.00/M output

At a glance

The differences that matter most.

Claude Mythos 5.2
Anthropic
Claude Mythos Preview
Anthropic
Core performance indexes
LLM Stats Score
59.6
#2
53.8
#8
Reasoning
53.6
#7
54.7
#5
Coding
44.6
#5
42.7
#7
Agents
44.1
#2
35.2
#25
Cost, coverage & limits
Benchmark wins
—
—
Input price
$8.00 / M
$25.00 / M
Output price
$40.00 / M
$125.00 / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Claude Mythos 5.2
Claude Mythos Preview
Vision
31.2#36
39.4#5
Multimodal
31.1#35
36.3#8
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Claude Mythos 5.2 · 16 for Claude Mythos Preview

No common benchmarks found

Claude Mythos 5.2 and Claude Mythos Previewdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Claude Mythos 5.2 costs less

For input processing, Claude Mythos 5.2 ($8.00/1M tokens) is 3.1x cheaper than Claude Mythos Preview ($25.00/1M tokens).

For output processing, Claude Mythos 5.2 ($40.00/1M tokens) is 3.1x cheaper than Claude Mythos Preview ($125.00/1M tokens).

In conclusion, Claude Mythos Preview is more expensive than Claude Mythos 5.2.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Nov 12 2026 • llm-stats.com
Anthropic
Claude Mythos 5.2
Input tokens$8.00
Output tokens$40.00
Best providerAnthropic
Anthropic
Claude Mythos Preview
Input tokens$25.00
Output tokens$125.00
Best providerAnthropic
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Only Claude Mythos 5.2 specifies input context (1,000,000 tokens). Only Claude Mythos 5.2 specifies output context (128,000 tokens).

Anthropic
Claude Mythos 5.2
Input1,000,000 tokens
Output128,000 tokens
Anthropic
Claude Mythos Preview
Input- tokens
Output- tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Mythos 5.2 and Claude Mythos Preview support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Mythos 5.2

Text
Images
Audio
Video

Claude Mythos Preview

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Mythos 5.2

Proprietary

Closed source

Claude Mythos Preview

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Mythos 5.2 was released on 2026-11-09, while Claude Mythos Preview's release date is not specified.

We can confirm Claude Mythos 5.2's release timeline, but cannot make a direct age comparison without Claude Mythos Preview's release date.

Claude Mythos 5.2

Nov 9, 2026

3 days ago

Claude Mythos Preview

—

Knowledge Cutoff

When training data ends

Claude Mythos 5.2 has a documented knowledge cutoff of 2026-06-01, while Claude Mythos Preview's cutoff date is not specified.

We can confirm Claude Mythos 5.2's training data extends to 2026-06-01, but cannot make a direct comparison without Claude Mythos Preview's cutoff date.

Claude Mythos 5.2

Jun 2026

Claude Mythos Preview

—

Provider Availability

Claude Mythos 5.2 is available from Anthropic. Claude Mythos Preview is available from Anthropic.

Claude Mythos 5.2

anthropic logo
Anthropic
Input Price:Input: $8.00/1MOutput Price:Output: $40.00/1M

Claude Mythos Preview

anthropic logo
Anthropic
Input Price:Input: $25.00/1MOutput Price:Output: $125.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Mythos 5.2 and Claude Mythos Preview side-by-side, then vote on the output you prefer.

Claude Mythos 5.2
✓ Preferred
Claude Mythos Preview
Open in Playground

FAQ

Common questions about Claude Mythos 5.2 vs Claude Mythos Preview.

Which is better, Claude Mythos 5.2 or Claude Mythos Preview?

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 53.8. Claude Mythos 5.2 is made by Anthropic and Claude Mythos Preview is made by Anthropic. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Mythos 5.2 compare to Claude Mythos Preview in benchmarks?

Claude Mythos 5.2 scores De novo protein binder design: 85.1%, Biomedical image analysis: 80.7%, Protocols Troubleshooting: 77.1%, Terminal-Bench-Science 0.1: 75.3%, Terminal-Bench 4.0: 70.5%. Claude Mythos Preview scores CyBench: 100.0%, USAMO25: 97.6%, GPQA: 94.6%, SWE-Bench Verified: 93.9%, CharXiv-R: 93.2%.

Is Claude Mythos 5.2 cheaper than Claude Mythos Preview?

Claude Mythos 5.2 is 3.1x cheaper for input tokens. Claude Mythos 5.2 costs $8.00/M input and $40.00/M output via anthropic. Claude Mythos Preview costs $25.00/M input and $125.00/M output via anthropic.

What are the context window sizes for Claude Mythos 5.2 and Claude Mythos Preview?

Claude Mythos 5.2 supports 1.0M tokens and Claude Mythos Preview supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Mythos 5.2 and Claude Mythos Preview?

Key differences include LLM Stats Score (59.6 vs 53.8), input pricing ($8.00 vs $25.00/M). See the full comparison above for benchmark-by-benchmark results.

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