DeepSeek-V4.1-Flash vs DeepSeek-V4-Flash-Vision-Exp
Wins 3 of 4 areas
Coding · Reasoning · Math
Wins 1 of 4 areas
Following instructions
DeepSeek-V4.1-Flash is the stronger all-rounder.DeepSeek-V4-Flash-Vision-Exp is cheaper and better at following instructions.
Scores updated · 12 tests both models report · How we compare
Where each one wins
Tests won in each of the four areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software30DeepSeek-V4.1-Flash3 of 3 tests
- ReasoningHard problems that need careful thinking10DeepSeek-V4.1-Flash1 of 1 test
- MathCompetition and research-level math10DeepSeek-V4.1-Flash1 of 1 test
- Following instructionsDoing exactly what it is asked01DeepSeek-V4-Flash-Vision-Exp1 of 1 test
Reasoning, math and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
DeepSeek-V4-Flash-Vision-Exp costs 43% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where DeepSeek-V4.1-Flash pulls ahead
- Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+12.2points ahead
- Programming problems, refreshed regularlyLiveBench · Coding+11.8points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+6.7points ahead
Where DeepSeek-V4-Flash-Vision-Exp pulls ahead
- Follows detailed instructions exactlyLiveBench · Instruction Following+1points ahead
Every test, side by side
All 12 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingDeepSeek-V4.1-Flash
- LiveBench · Agentic CodingDeepSeek-V4.1-Flash by 12.277.365.1+12.2
- LiveBench · CodingDeepSeek-V4.1-Flash by 11.88068.2+11.8
- Terminal-Bench 2.1DeepSeek-V4.1-Flash by 6.790.683.9+6.7
ReasoningDeepSeek-V4.1-Flash
- LiveBench · ReasoningDeepSeek-V4.1-Flash by 1.386.785.4+1.3
MathDeepSeek-V4.1-Flash
- LiveBench · MathematicsDeepSeek-V4.1-Flash by 5.593.387.8+5.5
Following instructionsDeepSeek-V4-Flash-Vision-Exp
- LiveBench · Instruction FollowingDeepSeek-V4-Flash-Vision-Exp by 17071+1
Other results6 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- ZeroBenchDeepSeek-V4.1-Flash by 144935+14
- CyberGymDeepSeek-V4.1-Flash by 12.888.175.3+12.8
- NL2RepoDeepSeek-V4.1-Flash by 6.36457.7+6.3
- Agents' Last ExamDeepSeek-V4.1-Flash by 4.531.827.3+4.5
- livebench_languagetie81.280.4tie
- livebench_data_analysistie79.379.5tie
Questions people ask
Which is better, DeepSeek-V4.1-Flash or DeepSeek-V4-Flash-Vision-Exp?
DeepSeek-V4.1-Flash wins three of the four areas where both have results: coding, reasoning and math. DeepSeek-V4-Flash-Vision-Exp wins following instructions, and costs 43% less.
Which is better for coding?
DeepSeek-V4.1-Flash. It wins 3 of the 3 coding tests both models report; DeepSeek-V4-Flash-Vision-Exp wins none.
Which is cheaper?
DeepSeek-V4.1-Flash costs $0.30 per million input tokens and $1.20 per million output tokens; DeepSeek-V4-Flash-Vision-Exp costs $0.22 and $0.65. That makes DeepSeek-V4-Flash-Vision-Exp about 43% cheaper for the same work.
How do you compare the two?
We use the 12 benchmark tests both models have published scores on. The verdict counts the 6 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.