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Claude Opus 4.8 vs Gemini 2.5 Pro

Claude Opus 4.8 leads Gemini 2.5 Pro on coding, 65.0 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 22, 2026; 77 benchmarks have a result for both.

Replace Claude Opus 4.8 Replace Gemini 2.5 Pro
Claude Opus 4.8Anthropic
Coding
65.0
Overall
69.8
Output $/M
$25.00
65
Gemini 2.5 ProGoogle
Coding
19.1
Overall
41.8
Output $/M
$10.00
12
vs boards won of 77 shared

Claude Opus 4.8 or Gemini 2.5 Pro: which to pick

Pick Claude Opus 4.8 for coding: it scores 65.0 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 $2.17).

Model AClaude Opus 4.8Anthropic65.0/1006 independent benchmarks$2.17 per solved taskModel BGemini 2.5 ProGoogle19.1/1003 independent benchmarks$0.64 per solved task
Shared results
77
Claude Opus 4.8 only
53
Gemini 2.5 Pro only
13
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 4.8 65.0 from 6 benchmarks, Gemini 2.5 Pro 19.1 from 3 benchmarks.
Widest category
Coding, 34.5 points apart on average over 11 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Claude Opus 4.8 82.7% against Gemini 2.5 Pro 0.4%, 82.3 points apart on a 0 to 100 scale.
Output price
Claude Opus 4.8 $25.00 against Gemini 2.5 Pro $10.00 per million output tokens, 2.5x apart.
Context window
Claude Opus 4.8 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 Opus 4.8BarsGemini 2.5 ProTies
Coding110
Intelligence20
Agentic work40
Reasoning110
Math50
Knowledge44
Web design60
General228
All shared boards6512
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
Coding benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
SWE-bench VerifiedNot measured53.6%Only Gemini 2.5 Pro measured
LiveBench coding77.3%Not measuredOnly Claude Opus 4.8 measured
LMArena WebDev15561226Claude Opus 4.8
AA Coding Index74.333.3Claude Opus 4.8
LiveCodeBench (Vals AI)87.8%Not measuredOnly Claude Opus 4.8 measured
SWE-bench Verified (Vals AI)88.6%54.4%Claude Opus 4.8
Terminal-Bench 4 (Vals AI)23.2%Not measuredOnly Claude Opus 4.8 measured
Vibe Code Bench (Vals AI)82.7%0.4%Claude Opus 4.8
Code migration (Vals AI)47.3%Not measuredOnly Claude Opus 4.8 measured
ProgramBench (Vals AI)1.0%Not measuredOnly Claude Opus 4.8 measured
Terminal-Bench 2.1 (Vals AI)71.9%Not measuredOnly Claude Opus 4.8 measured
SkillsBench (Vals AI)59.2%Not measuredOnly Claude Opus 4.8 measured
LiveCodeBench (Artificial Analysis run)Not measured80.1%Only Gemini 2.5 Pro measured
SciCode54.4%46.3%Claude Opus 4.8
Terminal-Bench Hard (Artificial Analysis run)58.3%26.5%Claude Opus 4.8
Terminal-BenchNot measured32.6%Only Gemini 2.5 Pro measured
FrontierCode46.5%Not measuredOnly Claude Opus 4.8 measured
GSO-Bench47.1%3.9%Claude Opus 4.8
WeirdML82.9%54.0%Claude Opus 4.8
LMArena Text: coding14901452Claude Opus 4.8
LMArena Text: software and IT14881459Claude Opus 4.8
LMArena WebDev: React1557Not measuredOnly Claude Opus 4.8 measured
LMArena WebDev: HTML15431235Claude Opus 4.8
LMArena WebDev: from an imageNot measured1285Only Gemini 2.5 Pro measured
SciCode12.3%Not measuredOnly Claude Opus 4.8 measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
AA Intelligence Index41.816.1Claude Opus 4.8
Epoch Capabilities Index159.0145.1Claude Opus 4.8
Agentic workLike-for-likePublic boards, shown as published, kept out of the index40
Agentic work benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
AA Agentic Index41.91.6Claude Opus 4.8
Design Arena: agents building web apps1233Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building full-stack apps1249Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building mobile apps1222Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building Android apps1233Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building Godot games1231Not measuredOnly Claude Opus 4.8 measured
Design Arena: agents building games1239Not measuredOnly Claude Opus 4.8 measured
Design Arena: HTML slides1171Not measuredOnly Claude Opus 4.8 measured
Design Arena: PowerPoint slides1202Not measuredOnly Claude Opus 4.8 measured
Design Arena: spreadsheets1303Not measuredOnly Claude Opus 4.8 measured
LiveBench research81.8%Not measuredOnly Claude Opus 4.8 measured
LiveBench browser96.0%Not measuredOnly Claude Opus 4.8 measured
LiveBench long agentic48.3%Not measuredOnly Claude Opus 4.8 measured
Finance Agent (Vals AI)53.9%Not measuredOnly Claude Opus 4.8 measured
Tax Agent Bench (Vals AI)30.0%Not measuredOnly Claude Opus 4.8 measured
Legal Research Bench (Vals AI)43.8%Not measuredOnly Claude Opus 4.8 measured
Excel Modeling Benchmark (Vals AI)69.4%Not measuredOnly Claude Opus 4.8 measured
Terminal-Bench-Science (Vals AI)4.3%Not measuredOnly Claude Opus 4.8 measured
Time Horizon Index (Vals AI)11.8%Not measuredOnly Claude Opus 4.8 measured
τ²-Bench Telecom94.4%54.1%Claude Opus 4.8
APEX-Agents48.9%Not measuredOnly Claude Opus 4.8 measured
Remote Labor Index8.3%Not measuredOnly Claude Opus 4.8 measured
GDPvalNot measured23.3%Only Gemini 2.5 Pro measured
OSWorld 2.020.6%Not measuredOnly Claude Opus 4.8 measured
DeepResearch Bench50.2%41.5%Claude Opus 4.8
PostTrainBench33.8%Not measuredOnly Claude Opus 4.8 measured
Vending-Bench 2$5,787$574Claude Opus 4.8
LMArena Search1204Not measuredOnly Claude Opus 4.8 measured
BrowseComp-PlusNot measured29.5%Only Gemini 2.5 Pro measured
Neither model has a result on the other 12 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index110
Reasoning benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
GPQA Diamond92.4%Not measuredOnly Claude Opus 4.8 measured
LiveBench reasoning89.2%Not measuredOnly Claude Opus 4.8 measured
MMMU Pro (Vals AI)86.6%Not measuredOnly Claude Opus 4.8 measured
GPQA Diamond (Artificial Analysis run)92.0%84.4%Claude Opus 4.8
Humanity's Last Exam (Artificial Analysis run)48.7%22.5%Claude Opus 4.8
GPQA Diamond (Epoch AI run)91.0%85.3%Claude Opus 4.8
ARC-AGI92.5%41.0%Claude Opus 4.8
ARC-AGI-272.1%4.9%Claude Opus 4.8
SimpleBench64.8%Not measuredOnly Claude Opus 4.8 measured
Chess puzzles52.0%Not measuredOnly Claude Opus 4.8 measured
Mystery game puzzles36.0%Not measuredOnly Claude Opus 4.8 measured
EBR-bench28.6%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: hard prompts14821455Claude Opus 4.8
LMArena Text: expert15031452Claude Opus 4.8
LMArena Text: hard prompts in English14871453Claude Opus 4.8
LMArena Vision: diagrams13151274Claude Opus 4.8
LMArena Vision: homework13371281Claude Opus 4.8
Kagi LLM Benchmark88.8%70.3%Claude Opus 4.8
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index50
Math benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
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 AIME98.3%84.7%Claude Opus 4.8
FrontierMath, tiers 1 to 380.0%24.6%Claude Opus 4.8
FrontierMath, tier 456.1%0.0%Claude Opus 4.8
ProofBench69.0%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: math14861450Claude Opus 4.8
LMArena Text: mathematical work14971454Claude Opus 4.8
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index44
Knowledge benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
MMLU Pro89.6%Not measuredOnly Claude Opus 4.8 measured
LegalBench (Vals AI)83.6%Not measuredOnly Claude Opus 4.8 measured
CaseLaw (Vals AI)Not measured63.9%Only Gemini 2.5 Pro measured
CorpFin (Vals AI)66.7%60.8%Claude Opus 4.8
TaxEval (Vals AI)75.6%Not measuredOnly Claude Opus 4.8 measured
MortgageTax (Vals AI)69.9%68.9%Claude Opus 4.8
MedCode (Vals AI)53.2%50.6%Claude Opus 4.8
MMLU Pro (Artificial Analysis run)Not measured86.2%Only Gemini 2.5 Pro measured
SimpleQA Verified53.0%Not measuredOnly Claude Opus 4.8 measured
LMArena Text: science14771480Gemini 2.5 Pro
LMArena Text: medicine and healthcare14641476Gemini 2.5 Pro
LMArena Text: legal and government14771480Gemini 2.5 Pro
LMArena Text: business and finance14581439Claude Opus 4.8
FACTS Benchmark Suite53.5%61.5%Gemini 2.5 Pro
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index60
Web design benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
Design Arena: websites12581167Claude Opus 4.8
Design Arena: UI components12551137Claude Opus 4.8
Design Arena: game dev12641111Claude Opus 4.8
Design Arena: data viz12401222Claude Opus 4.8
Design Arena: 3D12221080Claude Opus 4.8
Design Arena: all code categories12551152Claude Opus 4.8
Design Arena: SVG1195Not measuredOnly Claude Opus 4.8 measured
Design Arena: ASCII art1277Not measuredOnly Claude Opus 4.8 measured
LiveBench design78.8%Not measuredOnly Claude Opus 4.8 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index228
General benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 2.5 ProLeader
LiveBench data analysis66.0%Not measuredOnly Claude Opus 4.8 measured
Public Benefits Bench (Vals AI)68.1%Not measuredOnly Claude Opus 4.8 measured
SAGE (Vals AI)54.8%41.9%Claude Opus 4.8
MedScribe (Vals AI)85.8%73.5%Claude Opus 4.8
Vals Multimodal Index70.9%Not measuredOnly Claude Opus 4.8 measured
IFBench62.2%48.7%Claude Opus 4.8
Long context reasoning (AA-LCR)77.7%69.0%Claude Opus 4.8
DTBench94.9%82.4%Claude Opus 4.8
LMCA57.5%34.8%Claude Opus 4.8
Creative writing (Lech Mazur)Not measured83.8%Only Gemini 2.5 Pro measured
Surface Evolver Bench87.5%Not measuredOnly Claude Opus 4.8 measured
Furniture assembly42.5%Not measuredOnly Claude Opus 4.8 measured
LMArena Text14611458Claude Opus 4.8
LMArena Text: instruction following14761437Claude Opus 4.8
LMArena Text: creative writing14541454Claude Opus 4.8
LMArena Vision12941263Claude Opus 4.8
LMArena Text: English14681458Claude Opus 4.8
LMArena Text: non-English14501452Gemini 2.5 Pro
LMArena Text: Chinese15061507Gemini 2.5 Pro
LMArena Text: German14721487Gemini 2.5 Pro
LMArena Text: Japanese14421461Gemini 2.5 Pro
LMArena Text: Korean14311434Gemini 2.5 Pro
LMArena Text: French14811473Claude Opus 4.8
LMArena Text: Spanish14651474Gemini 2.5 Pro
LMArena Text: Russian14741461Claude Opus 4.8
LMArena Text: Polish14591479Gemini 2.5 Pro
LMArena Text: multi-turn14761453Claude Opus 4.8
LMArena Text: longer queries14831449Claude Opus 4.8
LMArena Text: writing and language14611454Claude Opus 4.8
LMArena Text: entertainment and media14401441Gemini 2.5 Pro
LMArena Vision: English12931261Claude Opus 4.8
LMArena Vision: Chinese13461300Claude Opus 4.8
LMArena Vision: reading text13031270Claude Opus 4.8
LMArena Vision: humor12821262Claude Opus 4.8
LMArena Vision: captioningNot measured1304Only Gemini 2.5 Pro measured
LMArena Vision: recognizing thingsNot measured1283Only Gemini 2.5 Pro measured
LMArena Vision: creative writing13011265Claude Opus 4.8
LMArena Document14751421Claude Opus 4.8
Neither model has a result on the other 8 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Opus 4.8 and Gemini 2.5 Pro
BenchmarkClaude Opus 4.8Gemini 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 4.8$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 4.8$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 4.8$1.25Fits 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 Opus 4.8 and Gemini 2.5 Pro
SpecificationAnthropic Claude Opus 4.8Google Gemini 2.5 Pro
MakerAnthropicGoogle
WeightsNo public weights listedNo public weights listed
ReleasedMay 27, 2026June 17, 2025
Context window1M1.05M
Input $/Mtok$5.00$1.25
Output $/Mtok$25.00$10.00
Coding index65.019.1
Independent measurements behind it63
Cost per solved task$2.17$0.64
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Opus 4.8 better than Gemini 2.5 Pro for coding?

Pick Claude Opus 4.8 for coding: it scores 65.0 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 $2.17).

Which is cheaper, Claude Opus 4.8 or Gemini 2.5 Pro?

Claude Opus 4.8 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 4.8 costs $2.17 and Gemini 2.5 Pro $0.64.

Which has the bigger context window, Claude Opus 4.8 or Gemini 2.5 Pro?

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

How many benchmarks is the Claude Opus 4.8 vs Gemini 2.5 Pro comparison based on?

77 benchmarks have a result for both models as of October 22, 2026. Claude Opus 4.8's coding index rests on 6 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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