Gemini 3.8 Flash vs DeepSeek V4.1: Price & Agent Model Comparison 2026
Compare Google Gemini 3.8 Flash with DeepSeek V4.1 Flash and V4 Pro for API pricing, context windows, multimodal support, and agent workloads.
Last updated: September 2026
Pricing Comparison
| Model | Provider | Input $/1M | Output $/1M | Context | Max Output |
|---|---|---|---|---|---|
| Gemini 3.8 Flash | $0.75 | $3.75 | 1.05M | 65K | |
| DeepSeek V4.1 Flash | DeepSeek | $0.3 | $1.2 | 1M | 384K |
| DeepSeek V4 Pro | DeepSeek | $1.32 | $3.96 | 1M | 384K |
Detailed Comparison
Gemini 3.8 Flash
$0.75 / $3.75
per 1M tokens
Strengths
- + Current GA Gemini Flash flagship
- + Multimodal inputs: text, image, video, audio, and PDF
- + 2026 introductory pricing with Batch and Flex
Best For
Google ecosystem apps, multimodal agents, search-grounded workflows
Context Window
1.05M
Max Output
65K
DeepSeek V4.1 Flash
DeepSeek
$0.3 / $1.2
per 1M tokens
Strengths
- + Peak price shown; off-peak is $0.15/$0.60
- + 1M context with 384K max output
- + Native vision and $0.003/M off-peak cache hits
Best For
High-volume text agents, Chinese workloads, cost-first routing
Context Window
1M
Max Output
384K
DeepSeek V4 Pro
DeepSeek
$1.32 / $3.96
per 1M tokens
Strengths
- + Current V4-Pro-0813 endpoint
- + Peak price shown; off-peak is $0.66/$1.98
- + Higher-capability DeepSeek route
Best For
Existing V4 Pro workloads that have not migrated to V4.1 Flash
Context Window
1M
Max Output
384K
Verdict
DeepSeek V4.1 Flash has the lower token bill and now supports native vision. Gemini 3.8 Flash costs more per token but offers broader multimodal inputs, Google tools, Batch/Flex processing, and AI Studio integration. Benchmark completed-task cost before routing production traffic.
Calculate Your Costs
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FAQ
Which is cheaper, Gemini 3.8 Flash or DeepSeek V4.1 Flash?
Gemini 3.8 Flash costs $0.75/$3.75 per million tokens (input/output), while DeepSeek V4.1 Flash costs $0.3/$1.2. DeepSeek V4.1 Flash is cheaper for input.
Which has a larger context window?
Gemini 3.8 Flash supports 1.05M context, while DeepSeek V4.1 Flash supports 1M. Larger context windows allow processing more text in a single request.
Which should I choose for my project?
DeepSeek V4.1 Flash has the lower token bill and now supports native vision. Gemini 3.8 Flash costs more per token but offers broader multimodal inputs, Google tools, Batch/Flex processing, and AI Studio integration. Benchmark completed-task cost before routing production traffic.