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Claude Sonnet 4.6 vs Gemini 2.5 Pro

Updated October 21, 2026. 74 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Claude Sonnet 4.6 Replace Gemini 2.5 Pro
Claude Sonnet 4.6Anthropic
Coding
57.8
Overall
30.1
Output $/M
$15.00
56
Gemini 2.5 ProGoogle
Coding
37.0
Overall
16.1
Output $/M
$10.00
18
vs boards won of 74 shared

Decision reading

Pick Claude Sonnet 4.6 for coding: it scores 57.8 on the Vibe Coding Index against 37.0 for Gemini 2.5 Pro.

Pick Gemini 2.5 Pro when output tokens cost 1.5x less, or when a solved task costs $0.64 against $1.68.

Model AClaude Sonnet 4.6Anthropic57.8/1002 independent benchmarks$1.68 per solved taskModel BGemini 2.5 ProGoogle37.0/1002 independent benchmarks$0.64 per solved task
Shared results
74
Claude Sonnet 4.6 only
43
Gemini 2.5 Pro only
13
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 57.8 from 2 benchmarks, Gemini 2.5 Pro 37.0 from 2 benchmarks.
Widest category
Agentic work, 27.6 points apart on average over 4 shared benchmarks.
Widest single gap
ARC-AGI-2: Claude Sonnet 4.6 60.4% against Gemini 2.5 Pro 4.9%, 55.6 points apart on a 0 to 100 scale.
Output price
Claude Sonnet 4.6 $15.00 against Gemini 2.5 Pro $10.00 per million output tokens, 1.5x apart.
Context window
Claude Sonnet 4.6 takes 1M tokens, Gemini 2.5 Pro 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 4.6BarsGemini 2.5 ProTies
Coding120
Intelligence20
Agentic work40
Reasoning100
Math30
Knowledge34
Web design60
General1614
All shared boards5618
CodingLike-for-likeFour of these boards feed the Vibe Coding Index120
Coding benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
SWE-bench VerifiedNot measured53.6%Only Gemini 2.5 Pro measured
LiveBench coding66.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena WebDev15231226Claude Sonnet 4.6
AA Coding Index63.033.3Claude Sonnet 4.6
LiveCodeBench (Vals AI)82.1%Not measuredOnly Claude Sonnet 4.6 measured
SWE-bench Verified (Vals AI)77.4%54.4%Claude Sonnet 4.6
Vibe Code Bench (Vals AI)55.8%0.4%Claude Sonnet 4.6
Code migration (Vals AI)39.9%Not measuredOnly Claude Sonnet 4.6 measured
ProgramBench (Vals AI)0.5%Not measuredOnly Claude Sonnet 4.6 measured
Terminal-Bench 2.1 (Vals AI)57.3%Not measuredOnly Claude Sonnet 4.6 measured
SkillsBench (Vals AI)49.0%Not measuredOnly Claude Sonnet 4.6 measured
LiveCodeBench (Artificial Analysis run)Not measured80.1%Only Gemini 2.5 Pro measured
SciCode50.1%46.3%Claude Sonnet 4.6
Terminal-Bench Hard (Artificial Analysis run)53.0%26.5%Claude Sonnet 4.6
Terminal-Bench53.4%32.6%Claude Sonnet 4.6
FrontierCode24.3%Not measuredOnly Claude Sonnet 4.6 measured
GSO-BenchNot measured3.9%Only Gemini 2.5 Pro measured
WeirdML66.1%54.0%Claude Sonnet 4.6
LMArena Text: coding15031452Claude Sonnet 4.6
LMArena Text: software and IT14911459Claude Sonnet 4.6
LMArena WebDev: React1512Not measuredOnly Claude Sonnet 4.6 measured
LMArena WebDev: HTML15271235Claude Sonnet 4.6
LMArena WebDev: from an image15291285Claude Sonnet 4.6
Neither model has a result on the other 15 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
AA Intelligence Index30.116.1Claude Sonnet 4.6
Epoch Capabilities Index152.8145.1Claude Sonnet 4.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index40
Agentic work benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
AA Agentic Index31.81.6Claude Sonnet 4.6
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 apps1202Not 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
Finance Agent (Vals AI)51.0%Not measuredOnly Claude Sonnet 4.6 measured
Tax Agent Bench (Vals AI)25.8%Not measuredOnly Claude Sonnet 4.6 measured
Legal Research Bench (Vals AI)38.5%Not measuredOnly Claude Sonnet 4.6 measured
Excel Modeling Benchmark (Vals AI)60.2%Not measuredOnly Claude Sonnet 4.6 measured
τ²-Bench Telecom79.5%54.1%Claude Sonnet 4.6
APEX-Agents43.0%Not measuredOnly Claude Sonnet 4.6 measured
GDPvalNot measured23.3%Only Gemini 2.5 Pro measured
OSWorld 2.09.3%Not measuredOnly Claude Sonnet 4.6 measured
DeepResearch Bench54.9%41.5%Claude Sonnet 4.6
OSWorld72.1%Not measuredOnly Claude Sonnet 4.6 measured
Vending-Bench 2$7,204$574Claude Sonnet 4.6
Neither model has a result on the other 18 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index100
Reasoning benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
GPQA Diamond85.6%Not measuredOnly Claude Sonnet 4.6 measured
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%84.4%Claude Sonnet 4.6
Humanity's Last Exam (Artificial Analysis run)33.6%22.5%Claude Sonnet 4.6
GPQA Diamond (Epoch AI run)87.4%85.3%Claude Sonnet 4.6
ARC-AGI86.5%41.0%Claude Sonnet 4.6
ARC-AGI-260.4%4.9%Claude Sonnet 4.6
Chess puzzles23.0%Not measuredOnly Claude Sonnet 4.6 measured
Mystery game puzzles16.0%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: hard prompts14851455Claude Sonnet 4.6
LMArena Text: expert15001452Claude Sonnet 4.6
LMArena Text: hard prompts in English14931453Claude Sonnet 4.6
LMArena Vision: diagrams13061274Claude Sonnet 4.6
LMArena Vision: homework13111281Claude Sonnet 4.6
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
AIME92.3%Not measuredOnly Claude Sonnet 4.6 measured
AA Math IndexNot measured87.7Only Gemini 2.5 Pro measured
AIME 2025 (Artificial Analysis run)Not measured87.7%Only Gemini 2.5 Pro measured
OTIS Mock AIME85.8%84.7%Claude Sonnet 4.6
FrontierMath, tiers 1 to 3Not measured24.6%Only Gemini 2.5 Pro measured
FrontierMath, tier 4Not measured0.0%Only Gemini 2.5 Pro measured
ProofBench45.0%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: math14621450Claude Sonnet 4.6
LMArena Text: mathematical work14831454Claude Sonnet 4.6
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index34
Knowledge benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
MMLU Pro87.3%Not measuredOnly Claude Sonnet 4.6 measured
LegalBench (Vals AI)82.1%Not measuredOnly Claude Sonnet 4.6 measured
CaseLaw (Vals AI)64.0%63.9%Claude Sonnet 4.6
CorpFin (Vals AI)65.3%60.8%Claude Sonnet 4.6
TaxEval (Vals AI)77.1%Not measuredOnly Claude Sonnet 4.6 measured
MortgageTax (Vals AI)67.7%68.9%Gemini 2.5 Pro
MedQA (Vals AI)92.1%Not measuredOnly Claude Sonnet 4.6 measured
MedCode (Vals AI)Not measured50.6%Only Gemini 2.5 Pro measured
MMLU Pro (Artificial Analysis run)Not measured86.2%Only Gemini 2.5 Pro measured
SimpleQA Verified35.5%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text: science14741480Gemini 2.5 Pro
LMArena Text: medicine and healthcare14511476Gemini 2.5 Pro
LMArena Text: legal and government14701480Gemini 2.5 Pro
LMArena Text: business and finance14641439Claude Sonnet 4.6
Neither model has a result on the other 3 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index60
Web design benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
Design Arena: websites12851167Claude Sonnet 4.6
Design Arena: UI components12711139Claude Sonnet 4.6
Design Arena: game dev12591112Claude Sonnet 4.6
Design Arena: data viz12781222Claude Sonnet 4.6
Design Arena: 3D12341080Claude Sonnet 4.6
Design Arena: all code categories12761152Claude Sonnet 4.6
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 index1614
General benchmarks for Claude Sonnet 4.6 and Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
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%41.9%Claude Sonnet 4.6
MedScribe (Vals AI)Not measured73.5%Only Gemini 2.5 Pro measured
Vals Multimodal Index60.6%Not measuredOnly Claude Sonnet 4.6 measured
IFBench56.6%48.7%Claude Sonnet 4.6
Long context reasoning (AA-LCR)80.0%69.0%Claude Sonnet 4.6
DTBench89.9%82.4%Claude Sonnet 4.6
LMCA46.5%34.8%Claude Sonnet 4.6
Creative writing (Lech Mazur)Not measured83.8%Only Gemini 2.5 Pro measured
ExploitBench23.6%Not measuredOnly Claude Sonnet 4.6 measured
LMArena Text14581458Claude Sonnet 4.6
LMArena Text: instruction following14761437Claude Sonnet 4.6
LMArena Text: creative writing14351454Gemini 2.5 Pro
LMArena Vision12831263Claude Sonnet 4.6
LMArena Text: English14721458Claude Sonnet 4.6
LMArena Text: non-English14401452Gemini 2.5 Pro
LMArena Text: Chinese14911507Gemini 2.5 Pro
LMArena Text: German14281487Gemini 2.5 Pro
LMArena Text: Japanese14201461Gemini 2.5 Pro
LMArena Text: Korean14101434Gemini 2.5 Pro
LMArena Text: French14651473Gemini 2.5 Pro
LMArena Text: Spanish14641474Gemini 2.5 Pro
LMArena Text: Russian14401461Gemini 2.5 Pro
LMArena Text: Polish14431479Gemini 2.5 Pro
LMArena Text: multi-turn14641453Claude Sonnet 4.6
LMArena Text: longer queries14791449Claude Sonnet 4.6
LMArena Text: writing and language14441454Gemini 2.5 Pro
LMArena Text: entertainment and media14311441Gemini 2.5 Pro
LMArena Vision: English12981261Claude Sonnet 4.6
LMArena Vision: Chinese13071300Claude Sonnet 4.6
LMArena Vision: reading text12961270Claude Sonnet 4.6
LMArena Vision: humor12481262Gemini 2.5 Pro
LMArena Vision: captioningNot measured1304Only Gemini 2.5 Pro measured
LMArena Vision: recognizing things11951283Gemini 2.5 Pro
LMArena Vision: creative writing12721265Claude Sonnet 4.6
LMArena Document14821421Claude Sonnet 4.6
Neither model has a result on the other 9 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 Gemini 2.5 Pro
BenchmarkClaude Sonnet 4.6Gemini 2.5 ProLeader
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
Gemini 2.5 Pro$0.0063Fits in one request

Gemini 2.5 Pro costs less

Repository review

50K input + 3K output tokens

Claude Sonnet 4.6$0.195Fits in one request
Gemini 2.5 Pro$0.092Fits in one request

Gemini 2.5 Pro costs less

Agent loop

200K input + 10K output tokens

Claude Sonnet 4.6$0.750Fits in one request
Gemini 2.5 Pro$0.350Fits in one request

Gemini 2.5 Pro 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 Gemini 2.5 Pro
SpecificationAnthropic Claude Sonnet 4.6Google Gemini 2.5 Pro
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedFebruary 17, 2026June 17, 2025
Context window1M1.05M
Input $/Mtok$3.00$1.25
Output $/Mtok$15.00$10.00
Coding index57.837.0
Independent measurements behind it22
Cost per solved task$1.68$0.64
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Sonnet 4.6 better than Gemini 2.5 Pro for coding?

Pick Claude Sonnet 4.6 for coding: it scores 57.8 on the Vibe Coding Index against 37.0 for Gemini 2.5 Pro. Pick Gemini 2.5 Pro when output tokens cost 1.5x less, or when a solved task costs $0.64 against $1.68.

Which is cheaper, Claude Sonnet 4.6 or Gemini 2.5 Pro?

Claude Sonnet 4.6 costs $3.00 per million input tokens and $15.00 per million output tokens; Gemini 2.5 Pro costs $1.25 and $10.00. Per solved SWE-bench Verified task, Claude Sonnet 4.6 costs $1.68 and Gemini 2.5 Pro $0.64.

Which has the bigger context window, Claude Sonnet 4.6 or Gemini 2.5 Pro?

Gemini 2.5 Pro, with 1.05M tokens against 1M.

How many benchmarks is the Claude Sonnet 4.6 vs Gemini 2.5 Pro comparison based on?

74 benchmarks have a result for both models as of October 21, 2026. Claude Sonnet 4.6's coding index rests on 2 independent benchmarks and Gemini 2.5 Pro's on 2. Where only one model has a result, the page says so instead of naming a winner.

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