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Gemini 3.8 Flash vs DeepSeek V4 Flash (0731)

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

The GA release of DeepSeek's efficiency-optimized V4 Flash, re-post-trained for coding, reasoning, and agent workflows.

1.0M ctx$0.07/$0.18 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
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper94%
Specs
1.0M
Context
66K
Max output
Sep 2026
Released
1.0M
Context
256K
Max output
Jul 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
Input91%$0.07/M tokens
Output95%$0.18/M tokens
Cache read79%$0.02/M tokens
Chat with Gemini 3.8 FlashGo to model
Chat with DeepSeek V4 Flash (0731)Go to model
Frequently Asked Questions: Gemini 3.8 Flash vs DeepSeek V4 Flash (0731)▼

Which is better, Gemini 3.8 Flash or DeepSeek V4 Flash (0731)?

▼

Both Gemini 3.8 Flash and DeepSeek V4 Flash (0731) 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 Flash (0731)?

▼

DeepSeek V4 Flash (0731) has a lower blended cost. Gemini 3.8 Flash: $0.75 input / $3.75 output. DeepSeek V4 Flash (0731): $0.07 input / $0.18 output.

Which has a larger context window, Gemini 3.8 Flash or DeepSeek V4 Flash (0731)?

▼

Gemini 3.8 Flash has a larger context window: Gemini 3.8 Flash supports 1M tokens vs DeepSeek V4 Flash (0731) at 1M tokens.

Do both Gemini 3.8 Flash and DeepSeek V4 Flash (0731) support vision?

▼

Gemini 3.8 Flash supports vision/image input, but DeepSeek V4 Flash (0731) does not.

What are the key differences between Gemini 3.8 Flash and DeepSeek V4 Flash (0731)?

▼

Key differences: DeepSeek V4 Flash (0731) is significantly cheaper; 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 DeepSeek V4 Flash (0731) for free on idapt.app to see which performs better for your specific needs.

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