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Gemini 2.5 Flash vs Kimi K2.6

Kimi K2.6 leads Gemini 2.5 Flash on the Artificial Analysis Intelligence Index, 27.0 to 15.5, and Gemini 2.5 Flash costs 1.6x less per output token ($2.50 vs $4.00 per million). Updated October 21, 2026; 57 benchmarks have a result for both.

Replace Gemini 2.5 Flash Replace Kimi K2.6
Gemini 2.5 FlashGoogle
Coding
No data
Overall
34.3
Output $/M
$2.50
2
Kimi K2.6Moonshot AI
Coding
52.1
Overall
60.5
Output $/M
$4.00
55
vs boards won of 57 shared

Gemini 2.5 Flash or Kimi K2.6: which to pick

Only Kimi K2.6 has a coding score, 52.1 on the Vibe Coding Index; Gemini 2.5 Flash has none, so the two cannot be ranked on coding.

Pick Gemini 2.5 Flash for output tokens 1.6x cheaper ($2.50 vs $4.00 per million) and a larger context window (1.05M against 262K tokens).

Model AGemini 2.5 FlashGoogleNot benchmarkedNo coding benchmark$0.466 per solved taskModel BKimi K2.6Moonshot AI52.1/1003 independent benchmarks$0.35 per solved task
Shared results
57
Gemini 2.5 Flash only
16
Kimi K2.6 only
52
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
Gemini 2.5 Flash not benchmarked, Kimi K2.6 52.1 from 3 benchmarks.
Widest category
Agentic work, 49.8 points apart on average over 2 shared benchmarks.
Widest single gap
τ²-Bench Telecom: Gemini 2.5 Flash 31.6% against Kimi K2.6 95.9%, 64.3 points apart on a 0 to 100 scale.
Output price
Gemini 2.5 Flash $2.50 against Kimi K2.6 $4.00 per million output tokens, 1.6x apart.
Context window
Gemini 2.5 Flash takes 1.05M tokens, Kimi K2.6 262K.

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
CategoryGemini 2.5 FlashBarsKimi K2.6Ties
Coding03
Intelligence02
Agentic work02
Reasoning07
Math02
Knowledge14
Web design07
General128
All shared boards255
CodingLike-for-likeSix of these boards feed the Vibe Coding Index03
Coding benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
SWE-bench Verified28.7%Not measuredOnly Gemini 2.5 Flash measured
LMArena WebDevNot measured1509Only Kimi K2.6 measured
AA Coding IndexNot measured61.8Only Kimi K2.6 measured
LiveCodeBench (Vals AI)Not measured86.8%Only Kimi K2.6 measured
SWE-bench Verified (Vals AI)Not measured76.2%Only Kimi K2.6 measured
Vibe Code Bench (Vals AI)Not measured37.9%Only Kimi K2.6 measured
Code migration (Vals AI)Not measured27.8%Only Kimi K2.6 measured
ProgramBench (Vals AI)Not measured0.0%Only Kimi K2.6 measured
Terminal-Bench 2.1 (Vals AI)Not measured53.6%Only Kimi K2.6 measured
LiveCodeBench (Artificial Analysis run)69.5%Not measuredOnly Gemini 2.5 Flash measured
SciCodeNot measured51.5%Only Kimi K2.6 measured
Terminal-Bench Hard (Artificial Analysis run)13.6%43.9%Kimi K2.6
Terminal-Bench17.1%Not measuredOnly Gemini 2.5 Flash measured
WeirdMLNot measured55.9%Only Kimi K2.6 measured
ALE-BenchNot measured1092.7Only Kimi K2.6 measured
LMArena Text: coding14231489Kimi K2.6
LMArena Text: software and IT14251484Kimi K2.6
LMArena WebDev: ReactNot measured1505Only Kimi K2.6 measured
LMArena WebDev: HTMLNot measured1485Only Kimi K2.6 measured
LMArena WebDev: from an imageNot measured1521Only Kimi K2.6 measured
Neither model has a result on the other 19 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
AA Intelligence Index15.527.0Kimi K2.6
Epoch Capabilities Index142.9150.9Kimi K2.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index02
Agentic work benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
AA Agentic IndexNot measured20.5Only Kimi K2.6 measured
Design Arena: agents building web appsNot measured1268Only Kimi K2.6 measured
Design Arena: agents building full-stack appsNot measured1155Only Kimi K2.6 measured
Design Arena: agents building mobile appsNot measured1157Only Kimi K2.6 measured
Design Arena: agents building Android appsNot measured1160Only Kimi K2.6 measured
Design Arena: agents building Godot gamesNot measured1120Only Kimi K2.6 measured
Design Arena: agents building gamesNot measured1141Only Kimi K2.6 measured
Design Arena: HTML slidesNot measured1184Only Kimi K2.6 measured
Design Arena: PowerPoint slidesNot measured1128Only Kimi K2.6 measured
Design Arena: spreadsheetsNot measured1276Only Kimi K2.6 measured
Finance Agent (Vals AI)Not measured44.9%Only Kimi K2.6 measured
Tax Agent Bench (Vals AI)Not measured12.4%Only Kimi K2.6 measured
Legal Research Bench (Vals AI)Not measured15.9%Only Kimi K2.6 measured
Excel Modeling Benchmark (Vals AI)Not measured57.9%Only Kimi K2.6 measured
τ²-Bench Telecom31.6%95.9%Kimi K2.6
OSWorld 2.0Not measured4.6%Only Kimi K2.6 measured
BALROG33.5%Not measuredOnly Gemini 2.5 Flash measured
Vending-Bench 2$549$6,205Kimi K2.6
Berkeley Function Calling Leaderboard (BFCL)56.2%Not measuredOnly Gemini 2.5 Flash measured
BrowseComp-Plus39.9%Not measuredOnly Gemini 2.5 Flash measured
Neither model has a result on the other 21 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index07
Reasoning benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
GPQA DiamondNot measured89.1%Only Kimi K2.6 measured
MMMU Pro (Vals AI)Not measured86.3%Only Kimi K2.6 measured
GPQA Diamond (Artificial Analysis run)79.0%91.1%Kimi K2.6
Humanity's Last Exam (Artificial Analysis run)12.1%37.5%Kimi K2.6
GPQA Diamond (Epoch AI run)Not measured90.8%Only Kimi K2.6 measured
ARC-AGI33.3%Not measuredOnly Gemini 2.5 Flash measured
ARC-AGI-22.5%Not measuredOnly Gemini 2.5 Flash measured
SimpleBench41.2%Not measuredOnly Gemini 2.5 Flash measured
Chess puzzlesNot measured20.0%Only Kimi K2.6 measured
Mystery game puzzlesNot measured18.0%Only Kimi K2.6 measured
EBR-benchNot measured2.4%Only Kimi K2.6 measured
LMArena Text: hard prompts14221470Kimi K2.6
LMArena Text: expert14261491Kimi K2.6
LMArena Text: hard prompts in English14201471Kimi K2.6
LMArena Vision: diagrams12451298Kimi K2.6
LMArena Vision: homework12441310Kimi K2.6
Kagi LLM Benchmark56.8%Not measuredOnly Gemini 2.5 Flash measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index02
Math benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
AA Math Index73.3Not measuredOnly Gemini 2.5 Flash measured
AIME 2025 (Artificial Analysis run)73.3%Not measuredOnly Gemini 2.5 Flash measured
OTIS Mock AIMENot measured96.1%Only Kimi K2.6 measured
FrontierMath, tiers 1 to 3Not measured57.2%Only Kimi K2.6 measured
FrontierMath, tier 4Not measured25.6%Only Kimi K2.6 measured
ProofBenchNot measured16.0%Only Kimi K2.6 measured
LMArena Text: math14111474Kimi K2.6
LMArena Text: mathematical work14221480Kimi K2.6
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index14
Knowledge benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
MMLU ProNot measured87.6%Only Kimi K2.6 measured
LegalBench (Vals AI)Not measured84.7%Only Kimi K2.6 measured
CaseLaw (Vals AI)Not measured61.2%Only Kimi K2.6 measured
CorpFin (Vals AI)Not measured66.7%Only Kimi K2.6 measured
TaxEval (Vals AI)Not measured74.7%Only Kimi K2.6 measured
MortgageTax (Vals AI)Not measured65.8%Only Kimi K2.6 measured
MedCode (Vals AI)40.4%40.1%Gemini 2.5 Flash
MMLU Pro (Artificial Analysis run)83.2%Not measuredOnly Gemini 2.5 Flash measured
SimpleQA VerifiedNot measured34.9%Only Kimi K2.6 measured
LMArena Text: science14331468Kimi K2.6
LMArena Text: medicine and healthcare14281457Kimi K2.6
LMArena Text: legal and government14301462Kimi K2.6
LMArena Text: business and finance14041445Kimi K2.6
FACTS Benchmark Suite47.2%Not measuredOnly Gemini 2.5 Flash measured
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index07
Web design benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
Design Arena: websites10741269Kimi K2.6
Design Arena: UI components10051266Kimi K2.6
Design Arena: game dev10051251Kimi K2.6
Design Arena: data viz10601249Kimi K2.6
Design Arena: 3D10211268Kimi K2.6
Design Arena: all code categories10591272Kimi K2.6
Design Arena: SVG10201181Kimi K2.6
Design Arena: ASCII artNot measured1165Only Kimi K2.6 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index128
General benchmarks for Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
Public Benefits Bench (Vals AI)Not measured56.6%Only Kimi K2.6 measured
SAGE (Vals AI)44.8%50.2%Kimi K2.6
MedScribe (Vals AI)83.0%78.2%Gemini 2.5 Flash
Vals Multimodal IndexNot measured56.4%Only Kimi K2.6 measured
IFBench50.3%76.0%Kimi K2.6
Long context reasoning (AA-LCR)65.3%81.0%Kimi K2.6
DTBench76.5%90.9%Kimi K2.6
LMCA27.5%37.3%Kimi K2.6
Furniture assemblyNot measured21.7%Only Kimi K2.6 measured
ExploitBenchNot measured18.4%Only Kimi K2.6 measured
LMArena Text14171455Kimi K2.6
LMArena Text: instruction following14051451Kimi K2.6
LMArena Text: creative writing14001434Kimi K2.6
LMArena Vision12351282Kimi K2.6
LMArena Text: English14181460Kimi K2.6
LMArena Text: non-English14091446Kimi K2.6
LMArena Text: Chinese14491520Kimi K2.6
LMArena Text: German14171451Kimi K2.6
LMArena Text: Japanese13961443Kimi K2.6
LMArena Text: Korean13851427Kimi K2.6
LMArena Text: French14321471Kimi K2.6
LMArena Text: Spanish14221464Kimi K2.6
LMArena Text: Russian14151446Kimi K2.6
LMArena Text: Polish14131438Kimi K2.6
LMArena Text: multi-turn14081453Kimi K2.6
LMArena Text: longer queries14191468Kimi K2.6
LMArena Text: writing and language14051439Kimi K2.6
LMArena Text: entertainment and media13931428Kimi K2.6
LMArena Vision: English12391287Kimi K2.6
LMArena Vision: Chinese12841346Kimi K2.6
LMArena Vision: reading text12371291Kimi K2.6
LMArena Vision: humor12251280Kimi K2.6
LMArena Vision: captioning1277Not measuredOnly Gemini 2.5 Flash measured
LMArena Vision: recognizing things1252Not measuredOnly Gemini 2.5 Flash measured
LMArena Vision: creative writing12411273Kimi K2.6
LMArena DocumentNot measured1451Only Kimi K2.6 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 Gemini 2.5 Flash and Kimi K2.6
BenchmarkGemini 2.5 FlashKimi K2.6Leader
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

Gemini 2.5 Flash$0.0015Fits in one request
Kimi K2.6$0.0029Fits in one request

Gemini 2.5 Flash costs less

Repository review

50K input + 3K output tokens

Gemini 2.5 Flash$0.022Fits in one request
Kimi K2.6$0.059Fits in one request

Gemini 2.5 Flash costs less

Agent loop

200K input + 10K output tokens

Gemini 2.5 Flash$0.085Fits in one request
Kimi K2.6$0.230Fits in one request

Gemini 2.5 Flash 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 Gemini 2.5 Flash and Kimi K2.6
SpecificationGoogle Gemini 2.5 FlashMoonshotAI Kimi K2.6
MakerGoogleMoonshot AI
WeightsNo public weights listedOpen weights
ReleasedJune 17, 2025April 20, 2026
Context window1.05M262K
Input $/Mtok$0.30$0.95
Output $/Mtok$2.50$4.00
Coding indexNot benchmarked52.1
Independent measurements behind it03
Cost per solved task$0.466$0.35
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 2.5 Flash better than Kimi K2.6 for coding?

Only Kimi K2.6 has a coding score, 52.1 on the Vibe Coding Index; Gemini 2.5 Flash has none, so the two cannot be ranked on coding. Pick Gemini 2.5 Flash for output tokens 1.6x cheaper ($2.50 vs $4.00 per million) and a larger context window (1.05M against 262K tokens).

Which is cheaper, Gemini 2.5 Flash or Kimi K2.6?

Gemini 2.5 Flash costs $0.30 per million input tokens and $2.50 per million output tokens; Kimi K2.6 costs $0.95 and $4.00. Per solved SWE-bench Verified task, Gemini 2.5 Flash costs $0.466 and Kimi K2.6 $0.35.

Which has the bigger context window, Gemini 2.5 Flash or Kimi K2.6?

Gemini 2.5 Flash, with 1.05M tokens against 262K.

How many benchmarks is the Gemini 2.5 Flash vs Kimi K2.6 comparison based on?

57 benchmarks have a result for both models as of October 21, 2026. Gemini 2.5 Flash's coding index rests on 0 independent benchmarks and Kimi K2.6's on 3. Where only one model has a result, the page says so instead of naming a winner.

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