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Claude Mythos 5.2 vs Gemini 3.8 Flash

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 48.6. Gemini 3.8 Flash is 10.7x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude Mythos 5.2 leads the overall LLM Stats Score 59.6 to 48.6, ranking #2 overall.

In the 1 individual benchmarks reported for both models, Claude Mythos 5.2 wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, Gemini 3.8 Flash is roughly 10.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.8 Flash also accepts a larger context window (1,048,576 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 5.2

  • overall performance matters — it scores 59.6 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Nov 2026

Choose Gemini 3.8 Flash

  • cost matters — it's about 10.7x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window

At a glance

The differences that matter most.

Claude Mythos 5.2
Anthropic
Gemini 3.8 Flash
Google
Core performance indexes
LLM Stats Score
59.6
#2
48.6
#31
Reasoning
53.3
#8
45.7
#37
Coding
45.1
#5
34.3
#42
Agents
44.6
#2
33.6
#37
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$8.00 / M
$0.75 / M
Output price
$40.00 / M
$3.75 / M
Context window
1,000,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Mythos 5.2
Gemini 3.8 Flash
Vision
31.5#33
33.6#23
Tool use
38.0#1
23.0#56
Multimodal
31.7#29
34.4#20
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Claude Mythos 5.2 · 13 for Gemini 3.8 Flash

1 shared

Claude Mythos 5.2 outperforms in 1 benchmarks (Terminal-Bench 4.0), while Gemini 3.8 Flash is better at 0 benchmarks.

Claude Mythos 5.2 significantly outperforms across most benchmarks.

Tue Nov 10 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3.8 Flash costs less

For input processing, Claude Mythos 5.2 ($8.00/1M tokens) is 10.7x more expensive than Gemini 3.8 Flash ($0.75/1M tokens).

For output processing, Claude Mythos 5.2 ($40.00/1M tokens) is 10.7x more expensive than Gemini 3.8 Flash ($3.75/1M tokens).

In conclusion, Claude Mythos 5.2 is more expensive than Gemini 3.8 Flash.*

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

Lowest available price from all providers
Tue Nov 10 2026 • llm-stats.com
Anthropic
Claude Mythos 5.2
Input tokens$8.00
Output tokens$40.00
Best providerAnthropic
Google
Gemini 3.8 Flash
Input tokens$0.75
Output tokens$3.75
Best providerGoogle
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Gemini 3.8 Flash accepts 1,048,576 input tokens compared to Claude Mythos 5.2's 1,000,000 tokens. Claude Mythos 5.2 can generate longer responses up to 128,000 tokens, while Gemini 3.8 Flash is limited to 65,536 tokens.

Anthropic
Claude Mythos 5.2
Input1,000,000 tokens
Output128,000 tokens
Google
Gemini 3.8 Flash
Input1,048,576 tokens
Output65,536 tokens
Tue Nov 10 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Mythos 5.2 and Gemini 3.8 Flash 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

Gemini 3.8 Flash

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

Gemini 3.8 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Mythos 5.2 was released on 2026-11-09, while Gemini 3.8 Flash was released on 2026-09-02.

Claude Mythos 5.2 is 2 months newer than Gemini 3.8 Flash.

Claude Mythos 5.2

Nov 9, 2026

0 days ago

2mo newer
Gemini 3.8 Flash

Sep 2, 2026

2 months ago

Knowledge Cutoff

When training data ends

Claude Mythos 5.2 has a knowledge cutoff of 2026-06-01, while Gemini 3.8 Flash has a cutoff of 2026-03-31.

Claude Mythos 5.2 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to Gemini 3.8 Flash (2026-03-31).

Claude Mythos 5.2

Jun 2026

3 mo newer
Gemini 3.8 Flash

Mar 2026

Provider Availability

Claude Mythos 5.2 is available from Anthropic. Gemini 3.8 Flash is available from Google.

Claude Mythos 5.2

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

Gemini 3.8 Flash

google logo
Google
Input Price:Input: $0.75/1MOutput Price:Output: $3.75/1M
* 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 Gemini 3.8 Flash side-by-side, then vote on the output you prefer.

Claude Mythos 5.2
✓ Preferred
Gemini 3.8 Flash
Open in Playground

FAQ

Common questions about Claude Mythos 5.2 vs Gemini 3.8 Flash.

Which is better, Claude Mythos 5.2 or Gemini 3.8 Flash?

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 48.6. Claude Mythos 5.2 is made by Anthropic and Gemini 3.8 Flash is made by Google. 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 Gemini 3.8 Flash 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%. Gemini 3.8 Flash scores Terminal-Bench 2.1: 89.4%, LVBench: 87.1%, CharXiv-R: 86.2%, LABBench2: 86.2%, DeepSWE 1.1: 73.7%.

Is Claude Mythos 5.2 cheaper than Gemini 3.8 Flash?

Gemini 3.8 Flash is 10.7x cheaper for input tokens. Claude Mythos 5.2 costs $8.00/M input and $40.00/M output via anthropic. Gemini 3.8 Flash costs $0.75/M input and $3.75/M output via google.

What are the context window sizes for Claude Mythos 5.2 and Gemini 3.8 Flash?

Claude Mythos 5.2 supports 1.0M tokens and Gemini 3.8 Flash 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 5.2 and Gemini 3.8 Flash?

Key differences include LLM Stats Score (59.6 vs 48.6), context window (1.0M vs 1.0M), input pricing ($8.00 vs $0.75/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.2 and Gemini 3.8 Flash?

Claude Mythos 5.2 is developed by Anthropic and Gemini 3.8 Flash is developed by Google.

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