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Gemini 3.8 Flash vs Hermes 4 405B

At a glance

Google's most intelligent Flash model, with significant gains over 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

1.0M ctx$0.83/$4.13 per M

NousResearch's flagship large-scale reasoning model based on Llama 4.

131K ctx$1.00/$3.00 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Reasoning & Knowledge
Graduate Science95.4%Factual Recall69.7%
Math
Competition Math98.9%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper9%
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Specs
1.0M
Context
66K
Max output
Sep 2026
Released
131K
Context
118K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input17%$0.83/M tokens
Output$4.13/M tokens
Reasoning$4.13/M tokens
Cache read$0.08/M tokens
Cache write$0.04/M tokens
Image input$0.83/M tokens
Audio input$0.83/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$1.00/M tokens
Output27%$3.00/M tokens
Chat with Gemini 3.8 FlashGo to model
Chat with Hermes 4 405BGo to model
Frequently Asked Questions: Gemini 3.8 Flash vs Hermes 4 405B▼

Which is better, Gemini 3.8 Flash or Hermes 4 405B?

▼

Both Gemini 3.8 Flash and Hermes 4 405B are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Gemini 3.8 Flash or Hermes 4 405B?

▼

Hermes 4 405B has a lower blended cost. Gemini 3.8 Flash: $0.83 input / $4.13 output. Hermes 4 405B: $1.00 input / $3.00 output.

Which has a larger context window, Gemini 3.8 Flash or Hermes 4 405B?

▼

Gemini 3.8 Flash has a larger context window: Gemini 3.8 Flash supports 1M tokens vs Hermes 4 405B at 131K tokens.

Do both Gemini 3.8 Flash and Hermes 4 405B support vision?

▼

Gemini 3.8 Flash supports vision/image input, but Hermes 4 405B does not.

What are the key differences between Gemini 3.8 Flash and Hermes 4 405B?

▼

Key differences: only Gemini 3.8 Flash supports vision input. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.8 Flash and Hermes 4 405B for free on idapt.app to see which performs better for your specific needs.

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