DeepSeek-V4.1-Flash vs Gemini 3.8 Flash: Specs & Benchmark Comparison
DeepSeek-V4.1-Flash is developed by DeepSeek, while Gemini 3.8 Flash comes from Google. Both were released in September 2026. DeepSeek-V4.1-Flash has a published size of about 552 billion parameters; Google has not disclosed the parameter count of Gemini 3.8 Flash.
The two models share 3 published benchmarks. DeepSeek-V4.1-Flash leads on 3 of them. The widest gaps are on Terminal-Bench 4.0, where DeepSeek-V4.1-Flash scores 31.2% against 19.1%; Terminal-Bench 2.1, where DeepSeek-V4.1-Flash scores 90.6% against 89.4%. Averaged across everything we track, DeepSeek-V4.1-Flash sits at 60.2% and Gemini 3.8 Flash at 59.2%.
DeepSeek-V4.1-Flash is the cheaper API at $0.30 per million input tokens and $1.20 per million output tokens, roughly 3 times cheaper than Gemini 3.8 Flash at $0.75 and $3.75. Both accept a context window of about 1M tokens. DeepSeek-V4.1-Flash accepts text and images as input, while Gemini 3.8 Flash accepts text, images, audio, and video.
| Characteristic | DeepSeek-V4.1-Flash | Gemini 3.8 Flash |
|---|---|---|
| Company | DeepSeek | |
| Release Date | September 10, 2026 | September 2, 2026 |
| Parameters | 552B | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 66K |
| Input Price / 1M | $0.30 | $0.75 |
| Output Price / 1M | $1.20 | $3.75 |
| Average Score | 60.2% | 59.2% |
| Benchmarks | ||
| Terminal-Bench 4.0 | 31.2% | 19.1% |
| Terminal-Bench 2.1 | 90.6% | 89.4% |
| DeepSWE 1.1 | 74.2% | 73.7% |
Visual Benchmark Comparison
Verdict
DeepSeek-V4.1-Flash leads in 1 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4.1-Flash — 0.6, Gemini 3.8 Flash — 0.6.
DeepSeek-V4.1-Flash is 3.0x cheaper: input $0.30/1M vs $0.75/1M tokens.
Same context size: 1M tokens.
Both models were released around the same time: 9/10/2026 and 9/2/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4.1-Flash or Gemini 3.8 Flash?
Which model is cheaper — DeepSeek-V4.1-Flash or Gemini 3.8 Flash?
Which has a larger context window — DeepSeek-V4.1-Flash or Gemini 3.8 Flash?
The DeepSeek-V4.1-Flash and Gemini 3.8 Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4.1-Flash or Gemini 3.8 Flash page. See also the complete list of AI model comparisons.