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Claude Sonnet 4.6 vs DeepSeek V4 Pro 0813

Claude Sonnet 4.6 leads DeepSeek V4 Pro 0813 on coding, 57.3 to 56.1 on the Vibe Coding Index, and DeepSeek V4 Pro 0813 costs 7.6x less per output token ($1.98 vs $15.00 per million). Updated October 22, 2026; 65 benchmarks have a result for both.

Replace Claude Sonnet 4.6 Replace DeepSeek V4 Pro 0813
Claude Sonnet 4.6Anthropic
Coding
57.3
Overall
60.3
Output $/M
$15.00
29
DeepSeek V4 Pro 0813DeepSeek
Coding
56.1
Overall
60.8
Output $/M
$1.98
36
vs boards won of 65 shared

Claude Sonnet 4.6 or DeepSeek V4 Pro 0813: which to pick

Claude Sonnet 4.6 and DeepSeek V4 Pro 0813 are level for coding, 57.3 against 56.1 on the Vibe Coding Index, so price and context decide.

Pick DeepSeek V4 Pro 0813 for output tokens 7.6x cheaper ($1.98 vs $15.00 per million) and a lower cost per solved task ($0.10 against $1.68). Pick Claude Sonnet 4.6 for work measured by ProgramBench (Vals AI) or Terminal-Bench 2.1 (Vals AI), where it leads.

Model AClaude Sonnet 4.6Anthropic57.3/1005 independent benchmarks$1.68 per solved taskModel BDeepSeek V4 Pro 0813DeepSeek56.1/1005 independent benchmarks$0.10 per solved task
Shared results
65
Claude Sonnet 4.6 only
53
DeepSeek V4 Pro 0813 only
13
Like-for-like categories
7 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Claude Sonnet 4.6 57.3 from 5 benchmarks, DeepSeek V4 Pro 0813 56.1 from 5 benchmarks.
Widest category
Reasoning, 8.6 points apart on average over 11 shared benchmarks.
Widest single gap
Mystery game puzzles: Claude Sonnet 4.6 16.0% against DeepSeek V4 Pro 0813 43.0%, 27.0 points apart on a 0 to 100 scale.
Output price
Claude Sonnet 4.6 $15.00 against DeepSeek V4 Pro 0813 $1.98 per million output tokens, 7.6x apart.
Context window
Claude Sonnet 4.6 takes 1M tokens, DeepSeek V4 Pro 0813 1.05M.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryClaude Sonnet 4.6BarsDeepSeek V4 Pro 0813Ties
Coding412
Intelligence02
Agentic work24
Reasoning38
Math22
Knowledge63
General125
All shared boards2936
CodingLike-for-likeSix of these boards feed the Vibe Coding Index412
Coding benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
LiveBench coding66.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena WebDev15231582DeepSeek V4 Pro 0813
AA Coding Index63.068.8DeepSeek V4 Pro 0813
LiveCodeBench (Vals AI)82.1%87.5%DeepSeek V4 Pro 0813
SWE-bench Verified (Vals AI)77.4%96.4%DeepSeek V4 Pro 0813
Terminal-Bench 4 (Vals AI)Not measured14.1%Only DeepSeek V4 Pro 0813 measured
Vibe Code Bench (Vals AI)55.8%82.3%DeepSeek V4 Pro 0813
Code migration (Vals AI)39.9%41.5%DeepSeek V4 Pro 0813
ProgramBench (Vals AI)0.5%0.0%Claude Sonnet 4.6
IOI (Vals AI)Not measured51.6%Only DeepSeek V4 Pro 0813 measured
Terminal-Bench 2.1 (Vals AI)57.3%54.7%Claude Sonnet 4.6
Vibe Code Bench 1-100 (Vals AI)Not measured17.5%Only DeepSeek V4 Pro 0813 measured
SkillsBench (Vals AI)49.0%53.8%DeepSeek V4 Pro 0813
CyberBench (Vals AI)Not measured72.9%Only DeepSeek V4 Pro 0813 measured
SciCode50.1%51.0%DeepSeek V4 Pro 0813
Terminal-Bench Hard (Artificial Analysis run)53.0%Not measuredOnly Claude Sonnet 4.6 measured
Terminal-Bench53.4%Not measuredOnly Claude Sonnet 4.6 measured
FrontierCode24.3%28.5%DeepSeek V4 Pro 0813
WeirdML66.1%66.2%DeepSeek V4 Pro 0813
ALE-BenchNot measured1403.2Only DeepSeek V4 Pro 0813 measured
LMArena Text: coding15031469Claude Sonnet 4.6
LMArena Text: software and IT14911462Claude Sonnet 4.6
LMArena WebDev: React15121588DeepSeek V4 Pro 0813
LMArena WebDev: HTML15271566DeepSeek V4 Pro 0813
LMArena WebDev: from an image1529Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
AA Intelligence Index30.136.0DeepSeek V4 Pro 0813
Epoch Capabilities Index152.8155.6DeepSeek V4 Pro 0813
Agentic workLike-for-likePublic boards, shown as published, kept out of the index24
Agentic work benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
AA Agentic Index31.841.3DeepSeek V4 Pro 0813
Design Arena: agents building web apps1190Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building full-stack apps1213Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building mobile apps1212Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building Android apps1197Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building Godot games1226Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: agents building games1177Not measuredOnly Claude Sonnet 4.6 measured
LiveBench research63.6%Not measuredOnly Claude Sonnet 4.6 measured
LiveBench browser68.0%Not measuredOnly Claude Sonnet 4.6 measured
LiveBench long agentic23.1%Not measuredOnly Claude Sonnet 4.6 measured
SREBench (Vals AI)Not measured1.9%Only DeepSeek V4 Pro 0813 measured
Finance Agent (Vals AI)51.0%50.4%Claude Sonnet 4.6
Tax Agent Bench (Vals AI)25.8%26.8%DeepSeek V4 Pro 0813
Legal Research Bench (Vals AI)38.5%40.9%DeepSeek V4 Pro 0813
Harvey's Legal Agent Benchmark (Vals AI)Not measured10.8%Only DeepSeek V4 Pro 0813 measured
Excel Modeling Benchmark (Vals AI)60.2%52.8%Claude Sonnet 4.6
Terminal-Bench-Science (Vals AI)Not measured4.3%Only DeepSeek V4 Pro 0813 measured
τ²-Bench Telecom79.5%Not measuredOnly Claude Sonnet 4.6 measured
APEX-Agents43.0%47.3%DeepSeek V4 Pro 0813
OSWorld 2.09.3%Not measuredOnly Claude Sonnet 4.6 measured
DeepResearch Bench54.9%Not measuredOnly Claude Sonnet 4.6 measured
OSWorld72.1%Not measuredOnly Claude Sonnet 4.6 measured
Vending-Bench 2$7,204Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 18 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index38
Reasoning benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
GPQA Diamond85.6%92.4%DeepSeek V4 Pro 0813
LiveBench reasoning86.4%Not measuredOnly Claude Sonnet 4.6 measured
MMMU Pro (Vals AI)83.6%Not measuredOnly Claude Sonnet 4.6 measured
GPQA Diamond (Artificial Analysis run)87.5%92.8%DeepSeek V4 Pro 0813
Humanity's Last Exam (Artificial Analysis run)33.6%41.0%DeepSeek V4 Pro 0813
GPQA Diamond (Epoch AI run)87.4%91.7%DeepSeek V4 Pro 0813
ARC-AGI86.5%90.5%DeepSeek V4 Pro 0813
ARC-AGI-260.4%61.3%DeepSeek V4 Pro 0813
Chess puzzles23.0%46.0%DeepSeek V4 Pro 0813
Mystery game puzzles16.0%43.0%DeepSeek V4 Pro 0813
LMArena Text: hard prompts14851458Claude Sonnet 4.6
LMArena Text: expert15001459Claude Sonnet 4.6
LMArena Text: hard prompts in English14931463Claude Sonnet 4.6
LMArena Vision: diagrams1306Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: homework1311Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index22
Math benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
AIME92.3%Not measuredOnly Claude Sonnet 4.6 measured
OTIS Mock AIME85.8%98.6%DeepSeek V4 Pro 0813
FrontierMath, tiers 1 to 3Not measured64.6%Only DeepSeek V4 Pro 0813 measured
FrontierMath, tier 4Not measured26.8%Only DeepSeek V4 Pro 0813 measured
ProofBench45.0%50.0%DeepSeek V4 Pro 0813
LMArena Text: math14621441Claude Sonnet 4.6
LMArena Text: mathematical work14831443Claude Sonnet 4.6
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index63
Knowledge benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
MMLU Pro87.3%87.0%Claude Sonnet 4.6
LegalBench (Vals AI)82.1%82.4%DeepSeek V4 Pro 0813
CaseLaw (Vals AI)64.0%Not measuredOnly Claude Sonnet 4.6 measured
CorpFin (Vals AI)65.3%65.4%DeepSeek V4 Pro 0813
TaxEval (Vals AI)77.1%73.1%Claude Sonnet 4.6
MortgageTax (Vals AI)67.7%Not measuredOnly Claude Sonnet 4.6 measured
MedQA (Vals AI)92.1%Not measuredOnly Claude Sonnet 4.6 measured
MedCode (Vals AI)Not measured42.5%Only DeepSeek V4 Pro 0813 measured
SimpleQA Verified35.5%52.9%DeepSeek V4 Pro 0813
LMArena Text: science14741457Claude Sonnet 4.6
LMArena Text: medicine and healthcare14511446Claude Sonnet 4.6
LMArena Text: legal and government14701459Claude Sonnet 4.6
LMArena Text: business and finance14641442Claude Sonnet 4.6
FACTS Benchmark Suite37.0%Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 4 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
Design Arena: websites1284Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: UI components1269Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: game dev1258Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: data viz1278Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: 3D1234Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: all code categories1275Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: SVG1196Not measuredOnly Claude Sonnet 4.6 measured
Design Arena: ASCII art1235Not measuredOnly Claude Sonnet 4.6 measured
LiveBench design71.8%Not measuredOnly Claude Sonnet 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index125
General benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
Vals IndexNot measured53.0%Only DeepSeek V4 Pro 0813 measured
LiveBench data analysis76.1%Not measuredOnly Claude Sonnet 4.6 measured
Public Benefits Bench (Vals AI)62.5%Not measuredOnly Claude Sonnet 4.6 measured
SAGE (Vals AI)46.6%Not measuredOnly Claude Sonnet 4.6 measured
MedScribe (Vals AI)Not measured80.2%Only DeepSeek V4 Pro 0813 measured
Vals Multimodal Index60.6%Not measuredOnly Claude Sonnet 4.6 measured
IFBench56.6%Not measuredOnly Claude Sonnet 4.6 measured
Long context reasoning (AA-LCR)80.0%80.3%DeepSeek V4 Pro 0813
DTBench89.9%93.9%DeepSeek V4 Pro 0813
LMCA46.5%45.5%Claude Sonnet 4.6
ExploitBench23.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text14581446Claude Sonnet 4.6
LMArena Text: instruction following14761448Claude Sonnet 4.6
LMArena Text: creative writing14351439DeepSeek V4 Pro 0813
LMArena Vision1283Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: English14721457Claude Sonnet 4.6
LMArena Text: non-English14401431Claude Sonnet 4.6
LMArena Text: Chinese14911481Claude Sonnet 4.6
LMArena Text: German1428Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: Japanese1420Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: Korean14101449DeepSeek V4 Pro 0813
LMArena Text: French14651446Claude Sonnet 4.6
LMArena Text: Spanish14641435Claude Sonnet 4.6
LMArena Text: Russian14401448DeepSeek V4 Pro 0813
LMArena Text: Polish1443Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: multi-turn14641454Claude Sonnet 4.6
LMArena Text: longer queries14791458Claude Sonnet 4.6
LMArena Text: writing and language14441443Claude Sonnet 4.6
LMArena Text: entertainment and media14311424Claude Sonnet 4.6
LMArena Vision: English1298Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: Chinese1307Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: reading text1296Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: humor1248Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: recognizing things1195Not measuredOnly Claude Sonnet 4.6 measured
LMArena Vision: creative writing1272Not measuredOnly Claude Sonnet 4.6 measured
LMArena Document1482Not measuredOnly Claude Sonnet 4.6 measured
Neither model has a result on the other 10 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
BenchmarkClaude Sonnet 4.6DeepSeek V4 Pro 0813Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Claude Sonnet 4.6$0.011Fits in one request
DeepSeek V4 Pro 0813$0.0016Fits in one request

DeepSeek V4 Pro 0813 costs less

Repository review

50K input + 3K output tokens

Claude Sonnet 4.6$0.195Fits in one request
DeepSeek V4 Pro 0813$0.039Fits in one request

DeepSeek V4 Pro 0813 costs less

Agent loop

200K input + 10K output tokens

Claude Sonnet 4.6$0.750Fits in one request
DeepSeek V4 Pro 0813$0.152Fits in one request

DeepSeek V4 Pro 0813 costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Claude Sonnet 4.6 and DeepSeek V4 Pro 0813
SpecificationAnthropic Claude Sonnet 4.6DeepSeek V4 Pro 0813
MakerAnthropicDeepSeek
WeightsNo public weights listedOpen weights
ReleasedFebruary 17, 2026August 12, 2026
Context window1M1.05M
Input $/Mtok$3.00$0.66
Output $/Mtok$15.00$1.98
Coding index57.356.1
Independent measurements behind it55
Cost per solved task$1.68$0.10
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Sonnet 4.6 better than DeepSeek V4 Pro 0813 for coding?

Claude Sonnet 4.6 and DeepSeek V4 Pro 0813 are level for coding, 57.3 against 56.1 on the Vibe Coding Index, so price and context decide. Pick DeepSeek V4 Pro 0813 for output tokens 7.6x cheaper ($1.98 vs $15.00 per million) and a lower cost per solved task ($0.10 against $1.68). Pick Claude Sonnet 4.6 for work measured by ProgramBench (Vals AI) or Terminal-Bench 2.1 (Vals AI), where it leads.

Which is cheaper, Claude Sonnet 4.6 or DeepSeek V4 Pro 0813?

Claude Sonnet 4.6 costs $3.00 per million input tokens and $15.00 per million output tokens; DeepSeek V4 Pro 0813 costs $0.66 and $1.98. Per solved SWE-bench Verified task, Claude Sonnet 4.6 costs $1.68 and DeepSeek V4 Pro 0813 $0.10.

Which has the bigger context window, Claude Sonnet 4.6 or DeepSeek V4 Pro 0813?

DeepSeek V4 Pro 0813, with 1.05M tokens against 1M.

How many benchmarks is the Claude Sonnet 4.6 vs DeepSeek V4 Pro 0813 comparison based on?

65 benchmarks have a result for both models as of October 22, 2026. Claude Sonnet 4.6's coding index rests on 5 independent benchmarks and DeepSeek V4 Pro 0813's on 5. Where only one model has a result, the page says so instead of naming a winner.

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