Claude Mythos 5.1 vs Gemini 1.0 Pro
Claude Mythos 5.1 leads the LLM Stats Score 45.1 to -5.3. Gemini 1.0 Pro is 26.7x cheaper per token.
Anthropic · Google · Updated for 2026
Which is better?
Claude Mythos 5.1 leads the overall LLM Stats Score 45.1 to -5.3, ranking #31 overall.
On price, Gemini 1.0 Pro is roughly 26.7x 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 45.1 and ranks #31 on LLM Stats
- your work emphasizes reasoning — 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 Gemini 1.0 Pro
- cost matters — it's about 26.7x cheaper per token
At a glance
The differences that matter most.
Individual benchmarks
1 reported for Claude Mythos 5.1 · 9 for Gemini 1.0 Pro
Claude Mythos 5.1 and Gemini 1.0 Prodon'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
For input processing, Claude Mythos 5.1 ($10.00/1M tokens) is 20.0x more expensive than Gemini 1.0 Pro ($0.50/1M tokens).
For output processing, Claude Mythos 5.1 ($50.00/1M tokens) is 33.3x more expensive than Gemini 1.0 Pro ($1.50/1M tokens).
In conclusion, Claude Mythos 5.1 is more expensive than Gemini 1.0 Pro.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Mythos 5.1 accepts 1,000,000 input tokens compared to Gemini 1.0 Pro's 32,760 tokens. Claude Mythos 5.1 can generate longer responses up to 128,000 tokens, while Gemini 1.0 Pro is limited to 8,192 tokens.
Input capabilities
Documented input modalities across available providers
Claude Mythos 5.1 supports multimodal inputs, whereas Gemini 1.0 Pro 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
Gemini 1.0 Pro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Mythos 5.1 was released on 2026-09-01, while Gemini 1.0 Pro was released on 2024-02-15.
Claude Mythos 5.1 is 31 months newer than Gemini 1.0 Pro.
Sep 1, 2026
1 weeks ago
2.5yr newerFeb 15, 2024
2.6 years ago
Knowledge Cutoff
When training data ends
Gemini 1.0 Pro has a documented knowledge cutoff of 2024-02-01, while Claude Mythos 5.1's cutoff date is not specified.
We can confirm Gemini 1.0 Pro's training data extends to 2024-02-01, but cannot make a direct comparison without Claude Mythos 5.1's cutoff date.
—
Feb 2024
Provider Availability
Claude Mythos 5.1 is available from Anthropic. Gemini 1.0 Pro is available from Google.
Claude Mythos 5.1
Gemini 1.0 Pro
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Mythos 5.1 and Gemini 1.0 Pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Mythos 5.1 vs Gemini 1.0 Pro.