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Gemini 3.8 Flash vs DeepSeek V4.1 Flash

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$0.75/$3.75 per M

DeepSeek's cost-efficient V4.1 tier and the first model built on the Causal Encoder-Decoder (CED) architecture: a 552B MoE activating 8B parameters on input and 16B on output.

1.0M ctx$0.03/$0.50 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
Cheaper90%
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Specs
1.0M
Context
66K
Max output
Sep 2026
Released
1.0M
Context
256K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$0.75/M tokens
Output$3.75/M tokens
Reasoning$3.75/M tokens
Cache read$0.07/M tokens
Cache write$0.04/M tokens
Image input$0.75/M tokens
Audio input$0.75/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input96%$0.03/M tokens
Output87%$0.50/M tokens
Cache read87%$0.01/M tokens
Chat with Gemini 3.8 FlashGo to model
Chat with DeepSeek V4.1 FlashGo to model
Frequently Asked Questions: Gemini 3.8 Flash vs DeepSeek V4.1 Flash▼

Which is better, Gemini 3.8 Flash or DeepSeek V4.1 Flash?

▼

Both Gemini 3.8 Flash and DeepSeek V4.1 Flash 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 DeepSeek V4.1 Flash?

▼

DeepSeek V4.1 Flash has a lower blended cost. Gemini 3.8 Flash: $0.75 input / $3.75 output. DeepSeek V4.1 Flash: $0.03 input / $0.50 output.

Which has a larger context window, Gemini 3.8 Flash or DeepSeek V4.1 Flash?

▼

Gemini 3.8 Flash has a larger context window: Gemini 3.8 Flash supports 1M tokens vs DeepSeek V4.1 Flash at 1M tokens.

Do both Gemini 3.8 Flash and DeepSeek V4.1 Flash support vision?

▼

Yes, both Gemini 3.8 Flash and DeepSeek V4.1 Flash support vision/image input.

What are the key differences between Gemini 3.8 Flash and DeepSeek V4.1 Flash?

▼

Key differences: DeepSeek V4.1 Flash is significantly cheaper. 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 DeepSeek V4.1 Flash for free on idapt.app to see which performs better for your specific needs.

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