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Claude Opus 4.5 vs Gemini 2.5 Pro

Claude Opus 4.5 leads Gemini 2.5 Pro on coding, 44.0 to 19.1 on the Vibe Coding Index, and Gemini 2.5 Pro costs 2.5x less per output token ($10.00 vs $25.00 per million). Updated October 21, 2026; 74 benchmarks have a result for both.

Replace Claude Opus 4.5 Replace Gemini 2.5 Pro
Claude Opus 4.5Anthropic
Coding
44.0
Overall
55.7
Output $/M
$25.00
54
Gemini 2.5 ProGoogle
Coding
19.1
Overall
41.8
Output $/M
$10.00
20
vs boards won of 74 shared

Claude Opus 4.5 or Gemini 2.5 Pro: which to pick

Pick Claude Opus 4.5 for coding: it scores 44.0 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro.

Pick Gemini 2.5 Pro for output tokens 2.5x cheaper ($10.00 vs $25.00 per million) and a lower cost per solved task ($0.64 against $1.37).

Model AClaude Opus 4.5Anthropic44.0/1003 independent benchmarks$1.37 per solved taskModel BGemini 2.5 ProGoogle19.1/1003 independent benchmarks$0.64 per solved task
Shared results
74
Claude Opus 4.5 only
34
Gemini 2.5 Pro only
16
Like-for-like categories
8 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 Opus 4.5 44.0 from 3 benchmarks, Gemini 2.5 Pro 19.1 from 3 benchmarks.
Widest category
Agentic work, 24.6 points apart on average over 4 shared benchmarks.
Widest single gap
LMArena WebDev: HTML: Claude Opus 4.5 1510 against Gemini 2.5 Pro 1235, 45.9 points apart on a 0 to 100 scale.
Output price
Claude Opus 4.5 $25.00 against Gemini 2.5 Pro $10.00 per million output tokens, 2.5x apart.
Context window
Claude Opus 4.5 takes 200K 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 Opus 4.5BarsGemini 2.5 ProTies
Coding120
Intelligence20
Agentic work40
Reasoning90
Math70
Knowledge37
Web design60
General1113
All shared boards5420
CodingLike-for-likeSix of these boards feed the Vibe Coding Index120
Coding benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
SWE-bench Verified79.2%53.6%Claude Opus 4.5
SWE-bench (full test set)52.6%Not measuredOnly Claude Opus 4.5 measured
SWE-bench Multilingual70.7%Not measuredOnly Claude Opus 4.5 measured
LMArena WebDev14941226Claude Opus 4.5
AA Coding IndexNot measured33.3Only Gemini 2.5 Pro measured
LiveCodeBench (Vals AI)83.7%Not measuredOnly Claude Opus 4.5 measured
SWE-bench Verified (Vals AI)76.4%54.4%Claude Opus 4.5
Vibe Code Bench (Vals AI)20.6%0.4%Claude Opus 4.5
LiveCodeBench (Artificial Analysis run)87.1%80.1%Claude Opus 4.5
SciCodeNot measured46.3%Only Gemini 2.5 Pro measured
Terminal-Bench Hard (Artificial Analysis run)47.0%26.5%Claude Opus 4.5
Terminal-Bench63.1%32.6%Claude Opus 4.5
GSO-Bench26.5%3.9%Claude Opus 4.5
WeirdML63.7%54.0%Claude Opus 4.5
Cybench82.0%Not measuredOnly Claude Opus 4.5 measured
LMArena Text: coding15031452Claude Opus 4.5
LMArena Text: software and IT14831459Claude Opus 4.5
LMArena WebDev: React1478Not measuredOnly Claude Opus 4.5 measured
LMArena WebDev: HTML15101235Claude Opus 4.5
LMArena WebDev: from an imageNot measured1285Only Gemini 2.5 Pro measured
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
AA Intelligence Index29.116.1Claude Opus 4.5
Epoch Capabilities Index150.1145.1Claude Opus 4.5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index40
Agentic work benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
AA Agentic IndexNot measured1.6Only Gemini 2.5 Pro measured
Design Arena: agents building web apps1159Not measuredOnly Claude Opus 4.5 measured
Design Arena: agents building full-stack apps1156Not measuredOnly Claude Opus 4.5 measured
Design Arena: agents building mobile apps1189Not measuredOnly Claude Opus 4.5 measured
Design Arena: agents building Android apps1175Not measuredOnly Claude Opus 4.5 measured
τ²-Bench Telecom89.5%54.1%Claude Opus 4.5
METR time horizons75.0%Not measuredOnly Claude Opus 4.5 measured
Remote Labor Index3.8%Not measuredOnly Claude Opus 4.5 measured
GDPval45.5%23.3%Claude Opus 4.5
BALROG43.5%Not measuredOnly Claude Opus 4.5 measured
DeepResearch Bench54.8%41.5%Claude Opus 4.5
OSWorld66.3%Not measuredOnly Claude Opus 4.5 measured
Vending-Bench 2$4,967$574Claude Opus 4.5
Berkeley Function Calling Leaderboard (BFCL)77.5%Not measuredOnly Claude Opus 4.5 measured
BrowseComp-PlusNot measured29.5%Only Gemini 2.5 Pro measured
Neither model has a result on the other 26 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index90
Reasoning benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
GPQA Diamond85.9%Not measuredOnly Claude Opus 4.5 measured
MMMU Pro (Vals AI)83.0%Not measuredOnly Claude Opus 4.5 measured
GPQA Diamond (Artificial Analysis run)86.6%84.4%Claude Opus 4.5
Humanity's Last Exam (Artificial Analysis run)30.1%22.5%Claude Opus 4.5
GPQA Diamond (Epoch AI run)86.0%85.3%Claude Opus 4.5
ARC-AGI80.0%41.0%Claude Opus 4.5
ARC-AGI-237.6%4.9%Claude Opus 4.5
SimpleBench62.0%Not measuredOnly Claude Opus 4.5 measured
Chess puzzles14.0%Not measuredOnly Claude Opus 4.5 measured
Mystery game puzzles22.0%Not measuredOnly Claude Opus 4.5 measured
EBR-bench14.3%Not measuredOnly Claude Opus 4.5 measured
VPCT40.0%Not measuredOnly Claude Opus 4.5 measured
LMArena Text: hard prompts14761455Claude Opus 4.5
LMArena Text: expert14871452Claude Opus 4.5
LMArena Text: hard prompts in English14821453Claude Opus 4.5
LMArena Vision: diagramsNot measured1274Only Gemini 2.5 Pro measured
LMArena Vision: homeworkNot measured1281Only Gemini 2.5 Pro measured
Kagi LLM Benchmark80.2%70.3%Claude Opus 4.5
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index70
Math benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
AIME95.4%Not measuredOnly Claude Opus 4.5 measured
MGSM (Vals AI)95.2%Not measuredOnly Claude Opus 4.5 measured
AA Math Index91.387.7Claude Opus 4.5
AIME 2025 (Artificial Analysis run)91.3%87.7%Claude Opus 4.5
OTIS Mock AIME86.1%84.7%Claude Opus 4.5
FrontierMath, tiers 1 to 334.4%24.6%Claude Opus 4.5
FrontierMath, tier 44.9%0.0%Claude Opus 4.5
ProofBench36.0%Not measuredOnly Claude Opus 4.5 measured
LMArena Text: math14631450Claude Opus 4.5
LMArena Text: mathematical work14681454Claude Opus 4.5
Neither model has a result on the other 3 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index37
Knowledge benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
MMLU Pro87.3%Not measuredOnly Claude Opus 4.5 measured
LegalBench (Vals AI)84.6%Not measuredOnly Claude Opus 4.5 measured
CaseLaw (Vals AI)62.6%63.9%Gemini 2.5 Pro
CorpFin (Vals AI)65.1%60.8%Claude Opus 4.5
TaxEval (Vals AI)74.9%Not measuredOnly Claude Opus 4.5 measured
MortgageTax (Vals AI)68.7%68.9%Gemini 2.5 Pro
MedQA (Vals AI)95.9%Not measuredOnly Claude Opus 4.5 measured
MedCode (Vals AI)49.2%50.6%Gemini 2.5 Pro
MMLU Pro (Artificial Analysis run)89.5%86.2%Claude Opus 4.5
SimpleQA Verified45.7%Not measuredOnly Claude Opus 4.5 measured
GeoBench75.0%Not measuredOnly Claude Opus 4.5 measured
LMArena Text: science14541480Gemini 2.5 Pro
LMArena Text: medicine and healthcare14441476Gemini 2.5 Pro
LMArena Text: legal and government14591480Gemini 2.5 Pro
LMArena Text: business and finance14481439Claude Opus 4.5
FACTS Benchmark Suite43.9%61.5%Gemini 2.5 Pro
Neither model has a result on the other 2 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index60
Web design benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
Design Arena: websites12471167Claude Opus 4.5
Design Arena: UI components12381140Claude Opus 4.5
Design Arena: game dev12291111Claude Opus 4.5
Design Arena: data viz12431221Claude Opus 4.5
Design Arena: 3D12141081Claude Opus 4.5
Design Arena: all code categories12421152Claude Opus 4.5
Design Arena: SVG1181Not measuredOnly Claude Opus 4.5 measured
Design Arena: ASCII art1190Not measuredOnly Claude Opus 4.5 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index1113
General benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 2.5 ProLeader
SAGE (Vals AI)52.1%41.9%Claude Opus 4.5
MedScribe (Vals AI)85.3%73.5%Claude Opus 4.5
IFBench58.0%48.7%Claude Opus 4.5
Long context reasoning (AA-LCR)77.3%69.0%Claude Opus 4.5
DTBench89.9%82.4%Claude Opus 4.5
LMCA44.5%34.8%Claude Opus 4.5
Creative writing (Lech Mazur)Not measured83.8%Only Gemini 2.5 Pro measured
CL-bench21.1%Not measuredOnly Claude Opus 4.5 measured
Furniture assembly28.3%Not measuredOnly Claude Opus 4.5 measured
LMArena Text14511458Gemini 2.5 Pro
LMArena Text: instruction following14781437Claude Opus 4.5
LMArena Text: creative writing14451454Gemini 2.5 Pro
LMArena VisionNot measured1263Only Gemini 2.5 Pro measured
LMArena Text: English14611458Claude Opus 4.5
LMArena Text: non-English14381452Gemini 2.5 Pro
LMArena Text: Chinese14701507Gemini 2.5 Pro
LMArena Text: German14491487Gemini 2.5 Pro
LMArena Text: Japanese14171461Gemini 2.5 Pro
LMArena Text: Korean14241434Gemini 2.5 Pro
LMArena Text: French14711473Gemini 2.5 Pro
LMArena Text: Spanish14571474Gemini 2.5 Pro
LMArena Text: Russian14471461Gemini 2.5 Pro
LMArena Text: Polish14391479Gemini 2.5 Pro
LMArena Text: multi-turn14661453Claude Opus 4.5
LMArena Text: longer queries14791449Claude Opus 4.5
LMArena Text: writing and language14521454Gemini 2.5 Pro
LMArena Text: entertainment and media14341441Gemini 2.5 Pro
LMArena Vision: EnglishNot measured1261Only Gemini 2.5 Pro measured
LMArena Vision: ChineseNot measured1300Only Gemini 2.5 Pro measured
LMArena Vision: reading textNot measured1270Only Gemini 2.5 Pro measured
LMArena Vision: humorNot measured1262Only Gemini 2.5 Pro measured
LMArena Vision: captioningNot measured1304Only Gemini 2.5 Pro measured
LMArena Vision: recognizing thingsNot measured1283Only Gemini 2.5 Pro measured
LMArena Vision: creative writingNot measured1265Only Gemini 2.5 Pro measured
LMArena Document14621421Claude Opus 4.5
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Opus 4.5 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.5Gemini 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 Opus 4.5$0.018Fits 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 Opus 4.5$0.325Fits 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 Opus 4.5$1.25Exceeds the context window
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 Opus 4.5 and Gemini 2.5 Pro
SpecificationAnthropic Claude Opus 4.5Google Gemini 2.5 Pro
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedNovember 24, 2025June 17, 2025
Context window200K1.05M
Input $/Mtok$5.00$1.25
Output $/Mtok$25.00$10.00
Coding index44.019.1
Independent measurements behind it33
Cost per solved task$1.37$0.64
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Opus 4.5 better than Gemini 2.5 Pro for coding?

Pick Claude Opus 4.5 for coding: it scores 44.0 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro. Pick Gemini 2.5 Pro for output tokens 2.5x cheaper ($10.00 vs $25.00 per million) and a lower cost per solved task ($0.64 against $1.37).

Which is cheaper, Claude Opus 4.5 or Gemini 2.5 Pro?

Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens; Gemini 2.5 Pro costs $1.25 and $10.00. Per solved SWE-bench Verified task, Claude Opus 4.5 costs $1.37 and Gemini 2.5 Pro $0.64.

Which has the bigger context window, Claude Opus 4.5 or Gemini 2.5 Pro?

Gemini 2.5 Pro, with 1.05M tokens against 200K.

How many benchmarks is the Claude Opus 4.5 vs Gemini 2.5 Pro comparison based on?

74 benchmarks have a result for both models as of October 21, 2026. Claude Opus 4.5's coding index rests on 3 independent benchmarks and Gemini 2.5 Pro's on 3. Where only one model has a result, the page says so instead of naming a winner.

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