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Claude Mythos 5.1 vs Nova Micro

Claude Mythos 5.1 leads the LLM Stats Score 45.3 to 2.4. Nova Micro is 347.8x cheaper per token.

Anthropic · Amazon · Updated for 2026

Which is better?

Claude Mythos 5.1 leads the overall LLM Stats Score 45.3 to 2.4, ranking #33 overall.

On price, Nova Micro is roughly 347.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Mythos 5.1 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose Claude Mythos 5.1

  • overall performance matters — it scores 45.3 and ranks #33 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Nova Micro

  • cost matters — it's about 347.8x cheaper per token

At a glance

The differences that matter most.

Claude Mythos 5.1
Anthropic
Nova Micro
Amazon
Core performance indexes
LLM Stats Score
45.3
#33
2.4
#317
Reasoning
44.1
#36
1.7
#312
Coding
38.0
#18
2.6
#226
Cost, coverage & limits
Benchmark wins
—
—
Input price
$10.00 / M
$0.03 / M
Output price
$50.00 / M
$0.14 / M
Context window
1,000,000
128,000

Individual benchmarks

1 reported for Claude Mythos 5.1 · 17 for Nova Micro

No common benchmarks found

Claude Mythos 5.1 and Nova Microdon'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

Nova Micro costs less

For input processing, Claude Mythos 5.1 ($10.00/1M tokens) is 333.3x more expensive than Nova Micro ($0.03/1M tokens).

For output processing, Claude Mythos 5.1 ($50.00/1M tokens) is 357.1x more expensive than Nova Micro ($0.14/1M tokens).

In conclusion, Claude Mythos 5.1 is more expensive than Nova Micro.*

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

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Anthropic
Claude Mythos 5.1
Input tokens$10.00
Output tokens$50.00
Best providerAnthropic
Amazon
Nova Micro
Input tokens$0.03
Output tokens$0.14
Best providerAWS Bedrock
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Mythos 5.1 accepts 1,000,000 input tokens compared to Nova Micro's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Anthropic
Claude Mythos 5.1
Input1,000,000 tokens
Output128,000 tokens
Amazon
Nova Micro
Input128,000 tokens
Output128,000 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Mythos 5.1 supports multimodal inputs, whereas Nova Micro does not.

Claude Mythos 5.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Mythos 5.1

Text
Images
Audio
Video

Nova Micro

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

Nova Micro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Mythos 5.1 was released on 2026-09-01, while Nova Micro was released on 2024-11-20.

Claude Mythos 5.1 is 22 months newer than Nova Micro.

Claude Mythos 5.1

Sep 1, 2026

2 weeks ago

1.8yr newer
Nova Micro

Nov 20, 2024

1.8 years 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. Nova Micro is available from Bedrock.

Claude Mythos 5.1

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

Nova Micro

bedrock logo
AWS Bedrock
Input Price:Input: $0.03/1MOutput Price:Output: $0.14/1M
* 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 Nova Micro side-by-side, then vote on the output you prefer.

Claude Mythos 5.1
✓ Preferred
Nova Micro
Open in Playground

FAQ

Common questions about Claude Mythos 5.1 vs Nova Micro.

Which is better, Claude Mythos 5.1 or Nova Micro?

Claude Mythos 5.1 leads the LLM Stats Score 45.3 to 2.4. Claude Mythos 5.1 is made by Anthropic and Nova Micro is made by Amazon. 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 Nova Micro in benchmarks?

Claude Mythos 5.1 scores Terminal-Bench 4.0: 60.9%. Nova Micro scores GSM8k: 92.3%, ARC-C: 90.2%, Translation Set1→en COMET22: 88.7%, Translation en→Set1 COMET22: 88.5%, IFEval: 87.2%.

Is Claude Mythos 5.1 cheaper than Nova Micro?

Nova Micro is 333.3x cheaper for input tokens. Claude Mythos 5.1 costs $10.00/M input and $50.00/M output via anthropic. Nova Micro costs $0.03/M input and $0.14/M output via bedrock.

What are the context window sizes for Claude Mythos 5.1 and Nova Micro?

Claude Mythos 5.1 supports 1.0M tokens and Nova Micro supports 128K 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 Nova Micro?

Key differences include LLM Stats Score (45.3 vs 2.4), context window (1.0M vs 128K), input pricing ($10.00 vs $0.03/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.1 and Nova Micro?

Claude Mythos 5.1 is developed by Anthropic and Nova Micro is developed by Amazon.

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