DeepSeek-V4.1-Flash vs DeepSeek-V4-Flash-Vision-Exp: Specs & Benchmark Comparison
DeepSeek-V4.1-Flash and DeepSeek-V4-Flash-Vision-Exp both come from DeepSeek, DeepSeek-V4-Flash-Vision-Exp was released in August 2026, and DeepSeek-V4.1-Flash followed a month later in September 2026. DeepSeek-V4.1-Flash has a published size of about 552 billion parameters; DeepSeek has not disclosed the parameter count of DeepSeek-V4-Flash-Vision-Exp.
The two models share 4 published benchmarks. DeepSeek-V4.1-Flash leads on 4 of them. The widest gaps are on AutomationBench, where DeepSeek-V4.1-Flash scores 54.8% against 25.7%; Terminal-Bench 2.1, where DeepSeek-V4.1-Flash scores 90.6% against 83.9%. Averaged across everything we track, DeepSeek-V4.1-Flash sits at 60.9% and DeepSeek-V4-Flash-Vision-Exp at 50.4%.
DeepSeek-V4-Flash-Vision-Exp is the cheaper API at $0.22 per million input tokens and $0.66 per million output tokens, about 36% below DeepSeek-V4.1-Flash at $0.30 and $1.20. Both accept a context window of about 1M tokens. Both accept text and images as input. On tooling, only DeepSeek-V4.1-Flash supports function calling and only DeepSeek-V4.1-Flash offers structured output.
| Characteristic | DeepSeek-V4.1-Flash | DeepSeek-V4-Flash-Vision-Exp |
|---|---|---|
| Company | DeepSeek | DeepSeek |
| Release Date | September 10, 2026 | August 21, 2026 |
| Parameters | 552B | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 393K |
| Input Price / 1M | $0.30 | $0.22 |
| Output Price / 1M | $1.20 | $0.66 |
| Average Score | 60.9% | 50.4% |
| Benchmarks | ||
| AutomationBench | 54.8% | 25.7% |
| Terminal-Bench 2.1 | 90.6% | 83.9% |
| NL2Repo | 64.0% | 57.7% |
| Agents' Last Exam | 31.8% | 27.3% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: DeepSeek-V4.1-Flash — 0.6, DeepSeek-V4-Flash-Vision-Exp — 0.5.
DeepSeek-V4-Flash-Vision-Exp is 1.7x cheaper: input $0.22/1M vs $0.30/1M tokens.
Same context size: 1M tokens.
DeepSeek-V4.1-Flash is newer: released 9/10/2026 vs 8/21/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4.1-Flash or DeepSeek-V4-Flash-Vision-Exp?
Which model is cheaper — DeepSeek-V4.1-Flash or DeepSeek-V4-Flash-Vision-Exp?
Which has a larger context window — DeepSeek-V4.1-Flash or DeepSeek-V4-Flash-Vision-Exp?
The DeepSeek-V4.1-Flash and DeepSeek-V4-Flash-Vision-Exp 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 DeepSeek-V4-Flash-Vision-Exp page. See also the complete list of AI model comparisons.