Claude Opus 4.7 vs DeepSeek-V4-Flash
Wins 5 of 7 areas
Coding · Agents · Reasoning · Facts · Math
Wins 1 of 7 areas
Long documents
Claude Opus 4.7 is the stronger all-rounder.DeepSeek-V4-Flash is cheaper and better at long documents.
Scores updated · 45 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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 software90Claude Opus 4.79 of 9 tests
- MathCompetition and research-level math30Claude Opus 4.73 of 5 tests · 2 ties
- FactsGetting facts right instead of making them up30Claude Opus 4.73 of 3 tests
- ReasoningHard problems that need careful thinking31Claude Opus 4.73 of 6 tests · 2 ties
- AgentsCarrying out multi-step tasks on its own32Claude Opus 4.73 of 5 tests
- Long documentsFinding answers in very long texts01DeepSeek-V4-Flash1 of 1 test
- Following instructionsDoing exactly what it is asked11Even1 each
Long documents rests on a single test.
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 costs 94% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Claude Opus 4.7 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+49.4points ahead
- Short factual questions, answered correctlySimpleQA Verified+17.6points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+15.9points ahead
Where DeepSeek-V4-Flash pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+20.6points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+4.8points ahead
- Research-level physics problemsCritPt+4.6points ahead
Every test, side by side
All 45 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.7
- Terminal-Bench HardClaude Opus 4.7 by 15.951.535.6+15.9
- LMArena · WebDevClaude Opus 4.7 by 127 rating points15571430+127 rating
- SWE-bench ProClaude Opus 4.7 by 11.764.352.6+11.7
- SWE-bench VerifiedClaude Opus 4.7 by 8.687.679+8.6
- SWE-bench MultilingualClaude Opus 4.7 by 7.280.573.3+7.2
- LiveBench · CodingClaude Opus 4.7 by 7.182.175+7.1
- Terminal-Bench 2.1Claude Opus 4.7 by 4.483.178.7+4.4
- SciCodeClaude Opus 4.7 by 4.254.550.3+4.2
- LiveBench · Agentic CodingClaude Opus 4.7 by 3.950.746.8+3.9
AgentsClaude Opus 4.7
- AA IT-Bench SREClaude Opus 4.7 by 15.246.731.5+15.2
- MCP AtlasClaude Opus 4.7 by 8.377.369+8.3
- BrowseCompClaude Opus 4.7 by 6.179.373.2+6.1
- τ-Bench V3 · BankingDeepSeek-V4-Flash by 4.834.639.4+4.8
- GDPValDeepSeek-V4-Flash by 4.142.846.9+4.1
ReasoningClaude Opus 4.7
- SimpleBenchClaude Opus 4.7 by 15.461.746.3+15.4
- ARC-AGI-2Claude Opus 4.7 by 14.475.861.4+14.4
- CritPtDeepSeek-V4-Flash by 4.61216.6+4.6
- Humanity's Last ExamClaude Opus 4.7 by 3.742.338.6+3.7
- GPQA Diamondtie91.490.8tie
- LiveBench · Reasoningtie87.286.6tie
FactsClaude Opus 4.7
- AA-Omniscience · Non-hallucinationClaude Opus 4.7 by 49.457.78.3+49.4
- SimpleQA VerifiedClaude Opus 4.7 by 17.651.734.1+17.6
- AA-Omniscience · AccuracyClaude Opus 4.7 by 8.548.940.4+8.5
MathClaude Opus 4.7
- FrontierMath Tiers 1-3 (v2)Claude Opus 4.7 by 12.770.257.5+12.7
- FrontierMath Tier 4Claude Opus 4.7 by 7.331.724.4+7.3
- LiveBench · MathematicsClaude Opus 4.7 by 6.192.886.8+6.1
- HMMT Feb. 2026tie93.994.8tie
- AIME 2026tie95.895.8tie
Following instructionsEven
- IFBenchDeepSeek-V4-Flash by 20.658.679.2+20.6
- LiveBench · Instruction FollowingClaude Opus 4.7 by 1.266.765.5+1.2
Other results14 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.
- AA-OmniscienceClaude Opus 4.7 by 41.627.3-14.3+41.6
- GDPval-AA (Elo)Claude Opus 4.7 by 358 rating points17531395+358 rating
- Terminal-Bench 2.0Claude Opus 4.7 by 12.569.456.9+12.5
- ToolathlonDeepSeek-V4-Flash by 1159.370.3+11
- HLE (with tools)Claude Opus 4.7 by 9.654.745.1+9.6
- AA IntelligenceClaude Opus 4.7 by 6.440.734.3+6.4
- τ²-Bench Telecom (AA run)DeepSeek-V4-Flash by 6.488.695+6.4
- Artificial Analysis Coding IndexClaude Opus 4.7 by 4.573.669.1+4.5
- CyberGymDeepSeek-V4-Flash by 3.673.176.7+3.6
- ARC-AGI-1Claude Opus 4.7 by 39289+3
- AA Agentic IndexDeepSeek-V4-Flash by 2.239.541.7+2.2
- livebench_languageDeepSeek-V4-Flash by 1.377.979.2+1.3
- livebench_data_analysisDeepSeek-V4-Flash by 178.379.3+1
- DeepSWEtie5454.4tie
Questions people ask
Which is better, Claude Opus 4.7 or DeepSeek-V4-Flash?
Claude Opus 4.7 wins five of the seven areas where both have results: coding, agents, reasoning, facts and math. DeepSeek-V4-Flash wins long documents, and costs 94% less. They are level on following instructions.
Which is better for coding?
Claude Opus 4.7. It wins 9 of the 9 coding tests both models report; DeepSeek-V4-Flash wins none.
Which is cheaper?
Claude Opus 4.7 costs $5.00 per million input tokens and $25.00 per million output tokens; DeepSeek-V4-Flash costs $0.44 and $1.32. That makes DeepSeek-V4-Flash about 94% cheaper for the same work.
How do you compare the two?
We use the 45 benchmark tests both models have published scores on. The verdict counts the 31 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 14 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.