DeepSeek-V4-Flash vs Solar Pro4
Wins 4 of 6 areas
Coding · Agents · Reasoning · Long documents
Wins 0 of 6 areas
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DeepSeek-V4-Flash is the stronger all-rounder.Solar Pro4 is cheaper.
Scores updated · 22 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 software40DeepSeek-V4-Flash4 of 4 tests
- AgentsCarrying out multi-step tasks on its own40DeepSeek-V4-Flash4 of 4 tests
- ReasoningHard problems that need careful thinking30DeepSeek-V4-Flash3 of 3 tests
- Long documentsFinding answers in very long texts10DeepSeek-V4-Flash1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
- MathCompetition and research-level math00Even0 each · 1 tie
Math and long documents 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.
Solar Pro4 costs 15% 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-Flash pulls ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+24points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+21.5points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+21.4points ahead
Where Solar Pro4 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+67.3points ahead
Every test, side by side
All 22 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingDeepSeek-V4-Flash
- Terminal-Bench 2.1DeepSeek-V4-Flash by 21.478.757.3+21.4
- SWE-bench VerifiedDeepSeek-V4-Flash by 8.47970.6+8.4
- LMArena · WebDevDeepSeek-V4-Flash by 59 rating points14301371+59 rating
- SciCodeDeepSeek-V4-Flash by 5.750.344.6+5.7
AgentsDeepSeek-V4-Flash
- BrowseCompDeepSeek-V4-Flash by 2473.249.2+24
- GDPValDeepSeek-V4-Flash by 16.446.930.5+16.4
- τ-Bench V3 · BankingDeepSeek-V4-Flash by 16.139.423.3+16.1
- Terminal-Bench 4.0DeepSeek-V4-Flash by 11.612.10.5+11.6
ReasoningDeepSeek-V4-Flash
- CritPtDeepSeek-V4-Flash by 11.216.65.4+11.2
- Humanity's Last ExamDeepSeek-V4-Flash by 9.438.629.2+9.4
- GPQA DiamondDeepSeek-V4-Flash by 1.790.889.1+1.7
FactsEven
- AA-Omniscience · Non-hallucinationSolar Pro4 by 67.38.375.6+67.3
- AA-Omniscience · AccuracyDeepSeek-V4-Flash by 21.540.418.9+21.5
Other results7 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.
- Artificial Analysis Coding IndexDeepSeek-V4-Flash by 16.469.152.7+16.4
- AA-OmniscienceSolar Pro4 by 13.5-14.3-0.8+13.5
- AA Agentic IndexDeepSeek-V4-Flash by 8.141.733.6+8.1
- AA IntelligenceDeepSeek-V4-Flash by 6.134.328.2+6.1
- LiveCodeBenchDeepSeek-V4-Flash by 3.891.687.8+3.8
- MMLU-Protie86.286.3tie
- τ³-Bench Bankingtie22.923tie
Questions people ask
Which is better, DeepSeek-V4-Flash or Solar Pro4?
DeepSeek-V4-Flash wins four of the six areas where both have results: coding, agents, reasoning and long documents. Solar Pro4 wins none, but costs 15% less. They are level on facts and math.
Which is better for coding?
DeepSeek-V4-Flash. It wins 4 of the 4 coding tests both models report; Solar Pro4 wins none.
Which is cheaper?
DeepSeek-V4-Flash costs $0.44 per million input tokens and $1.32 per million output tokens; Solar Pro4 costs $0.30 and $1.20. That makes Solar Pro4 about 15% cheaper for the same work.
How do you compare the two?
We use the 22 benchmark tests both models have published scores on. The verdict counts the 15 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 7 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.