The AI arena is free today

Open Superagent

Claude Mythos 5.1 vs Qwen3.6 Plus

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 39.5. Qwen3.6 Plus is 17.8x cheaper per token.

Anthropic · Alibaba Cloud / Qwen Team · Updated for 2026

Which is better?

Claude Mythos 5.1 leads the overall LLM Stats Score 45.1 to 39.5, ranking #31 overall.

On price, Qwen3.6 Plus is roughly 17.8x 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 5.1

  • overall performance matters — it scores 45.1 and ranks #31 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

Choose Qwen3.6 Plus

  • cost matters — it's about 17.8x cheaper per token

At a glance

The differences that matter most.

Claude Mythos 5.1
Anthropic
Qwen3.6 Plus
Alibaba Cloud / Qwen Team
Core performance indexes
LLM Stats Score
45.1
#31
39.5
#56
Reasoning
44.4
#34
40.5
#50
Coding
37.5
#17
28.1
#56
Agents
34.5
#21
20.8
#57
Cost, coverage & limits
Benchmark wins
—
—
Input price
$10.00 / M
$0.50 / M
Output price
$50.00 / M
$3.00 / M
Context window
1,000,000
1,000,000

Individual benchmarks

1 reported for Claude Mythos 5.1 · 65 for Qwen3.6 Plus

No common benchmarks found

Claude Mythos 5.1 and Qwen3.6 Plusdon'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

Qwen3.6 Plus costs less

For input processing, Claude Mythos 5.1 ($10.00/1M tokens) is 20.0x more expensive than Qwen3.6 Plus ($0.50/1M tokens).

For output processing, Claude Mythos 5.1 ($50.00/1M tokens) is 16.7x more expensive than Qwen3.6 Plus ($3.00/1M tokens).

In conclusion, Claude Mythos 5.1 is more expensive than Qwen3.6 Plus.*

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

Lowest available price from all providers
Tue Sep 08 2026 • llm-stats.com
Anthropic
Claude Mythos 5.1
Input tokens$10.00
Output tokens$50.00
Best providerAnthropic
Alibaba Cloud / Qwen Team
Qwen3.6 Plus
Input tokens$0.50
Output tokens$3.00
Best providerNovita
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,000,000 tokens. Claude Mythos 5.1 can generate longer responses up to 128,000 tokens, while Qwen3.6 Plus is limited to 65,536 tokens.

Anthropic
Claude Mythos 5.1
Input1,000,000 tokens
Output128,000 tokens
Alibaba Cloud / Qwen Team
Qwen3.6 Plus
Input1,000,000 tokens
Output65,536 tokens
Tue Sep 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Mythos 5.1 and Qwen3.6 Plus support multimodal inputs.

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

Claude Mythos 5.1

Text
Images
Audio
Video

Qwen3.6 Plus

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 5.1

Proprietary

Closed source

Qwen3.6 Plus

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Mythos 5.1 was released on 2026-09-01, while Qwen3.6 Plus was released on 2026-03-31.

Claude Mythos 5.1 is 5 months newer than Qwen3.6 Plus.

Claude Mythos 5.1

Sep 1, 2026

1 weeks ago

5mo newer
Qwen3.6 Plus

Mar 31, 2026

5 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Mythos 5.1 is available from Anthropic. Qwen3.6 Plus is available from Novita, Together.

Claude Mythos 5.1

anthropic logo
Anthropic
Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Qwen3.6 Plus

novita logo
Novita
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M
together logo
Together
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Mythos 5.1 and Qwen3.6 Plus side-by-side, then vote on the output you prefer.

Claude Mythos 5.1
✓ Preferred
Qwen3.6 Plus
Open in Playground

FAQ

Common questions about Claude Mythos 5.1 vs Qwen3.6 Plus.

Which is better, Claude Mythos 5.1 or Qwen3.6 Plus?

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 39.5. Claude Mythos 5.1 is made by Anthropic and Qwen3.6 Plus is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Mythos 5.1 compare to Qwen3.6 Plus in benchmarks?

Claude Mythos 5.1 scores Terminal-Bench 4.0: 60.9%. Qwen3.6 Plus scores CountBench: 97.6%, V*: 96.9%, HMMT 2025: 96.7%, AIME 2026: 95.3%, HMMT25: 94.6%.

Is Claude Mythos 5.1 cheaper than Qwen3.6 Plus?

Qwen3.6 Plus is 20.0x cheaper for input tokens. Claude Mythos 5.1 costs $10.00/M input and $50.00/M output via anthropic. Qwen3.6 Plus costs $0.50/M input and $3.00/M output via novita.

What are the context window sizes for Claude Mythos 5.1 and Qwen3.6 Plus?

Claude Mythos 5.1 supports 1.0M tokens and Qwen3.6 Plus supports 1.0M 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 5.1 and Qwen3.6 Plus?

Key differences include LLM Stats Score (45.1 vs 39.5), input pricing ($10.00 vs $0.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.1 and Qwen3.6 Plus?

Claude Mythos 5.1 is developed by Anthropic and Qwen3.6 Plus is developed by Alibaba Cloud / Qwen Team.

Related comparisons