Claude Opus 4.8 vs DeepSeek-V4-Flash-Vision-Exp
Wins 3 of 4 areas
Reasoning · Math · Following instructions
Wins 0 of 4 areas
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Claude Opus 4.8 is the stronger all-rounder.DeepSeek-V4-Flash-Vision-Exp is cheaper.
Scores updated · 15 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.
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 97% 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 Claude Opus 4.8 pulls ahead
- Programming problems, refreshed regularlyLiveBench · Coding+13.6points ahead
- Fresh competition math problemsLiveBench · Mathematics+6.5points ahead
- Fresh logic puzzles that change regularlyLiveBench · Reasoning+3.8points ahead
Where DeepSeek-V4-Flash-Vision-Exp pulls ahead
- Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+14.6points ahead
Every test, side by side
All 15 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingEven
- LiveBench · Agentic CodingDeepSeek-V4-Flash-Vision-Exp by 14.650.565.1+14.6
- LiveBench · CodingClaude Opus 4.8 by 13.681.868.2+13.6
- Terminal-Bench 2.1tie84.683.9tie
ReasoningClaude Opus 4.8
- LiveBench · ReasoningClaude Opus 4.8 by 3.889.285.4+3.8
Following instructionsClaude Opus 4.8
- LiveBench · Instruction FollowingClaude Opus 4.8 by 17271+1
Other results9 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.
- livebench_data_analysisDeepSeek-V4-Flash-Vision-Exp by 13.56679.5+13.5
- NL2RepoClaude Opus 4.8 by 1269.757.7+12
- DSBench-HardClaude Opus 4.8 by 8.171.763.6+8.1
- Toolathlon VerifiedClaude Opus 4.8 by 479.975.9+4
- CyberGymClaude Opus 4.8 by 3.578.875.3+3.5
- Agents' Last ExamDeepSeek-V4-Flash-Vision-Exp by 1.625.727.3+1.6
- AutomationBench PublicClaude Opus 4.8 by 1.527.225.7+1.5
- DeepSWEDeepSeek-V4-Flash-Vision-Exp by 1.35859.3+1.3
- livebench_languagetie79.780.4tie
Questions people ask
Which is better, Claude Opus 4.8 or DeepSeek-V4-Flash-Vision-Exp?
Claude Opus 4.8 wins three of the four areas where both have results: reasoning, math and following instructions. DeepSeek-V4-Flash-Vision-Exp wins none, but costs 97% less. They are level on coding.
Which is better for coding?
Neither. They win 1 coding test each of the 3 both models report, and 1 is a tie.
Which is cheaper?
Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens; DeepSeek-V4-Flash-Vision-Exp costs $0.22 and $0.65. That makes DeepSeek-V4-Flash-Vision-Exp about 97% cheaper for the same work.
How do you compare the two?
We use the 15 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 9 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.