Enter opens the highlighted result. Esc closes.

Gemini 3.5 Flash vs Gemini 4 Argon

Gemini 4 Argon leads Gemini 3.5 Flash on coding, 81.0 to 39.8 on the Vibe Coding Index, at about the same output price ($10.00 vs $9.00 per million). Updated October 22, 2026; 69 benchmarks have a result for both.

Replace Gemini 3.5 Flash Replace Gemini 4 Argon
Gemini 3.5 FlashGoogle
Coding
39.8
Overall
63.8
Output $/M
$9.00
1
Gemini 4 ArgonGoogle
Coding
81.0
Overall
84.0
Output $/M
$10.00
67
vs boards won of 69 shared, 1 tied

Gemini 3.5 Flash or Gemini 4 Argon: which to pick

Pick Gemini 4 Argon for coding: it scores 81.0 on the Vibe Coding Index against 39.8 for Gemini 3.5 Flash.

Pick Gemini 3.5 Flash for output tokens 1.1x cheaper ($9.00 vs $10.00 per million) and work measured by Terminal-Bench 2.1 (Vals AI), where it leads.

Model AGemini 3.5 FlashGoogle39.8/1004 independent benchmarks$1.21 per solved taskModel BGemini 4 ArgonGoogle81.0/1005 independent benchmarksNo cost per solved task
Shared results
69
Gemini 3.5 Flash only
43
Gemini 4 Argon only
25
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 3.5 Flash 39.8 from 4 benchmarks, Gemini 4 Argon 81.0 from 5 benchmarks.
Widest category
Agentic work, 30.2 points apart on average over 7 shared benchmarks.
Widest single gap
Terminal-Bench 4 (Vals AI): Gemini 3.5 Flash 6.1% against Gemini 4 Argon 57.6%, 68.7 points apart on a 0 to 100 scale.
Output price
Gemini 3.5 Flash $9.00 against Gemini 4 Argon $10.00 per million output tokens, 1.1x apart.
Context window
Both take 1.05M tokens.

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 3.5 FlashBarsGemini 4 ArgonTies
Coding1111 tie
Intelligence02
Agentic work07
Reasoning010
Math06
Knowledge07
Web design06
General018
All shared boards1671 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index111
Coding benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
LiveBench codingNot measured89.7%Only Gemini 4 Argon measured
LMArena WebDev14991678Gemini 4 Argon
LiveCodeBench (Vals AI)87.6%Not measuredOnly Gemini 3.5 Flash measured
SWE-bench Verified (Vals AI)78.8%Not measuredOnly Gemini 3.5 Flash measured
Terminal-Bench 4 (Vals AI)6.1%57.6%Gemini 4 Argon
Vibe Code Bench (Vals AI)48.7%91.9%Gemini 4 Argon
Code migration (Vals AI)26.8%68.2%Gemini 4 Argon
ProgramBench (Vals AI)0.0%2.5%Gemini 4 Argon
IOI (Vals AI)Not measured100.0%Only Gemini 4 Argon measured
Terminal-Bench 2.1 (Vals AI)74.2%57.7%Gemini 3.5 Flash
SWE-bench Multimodal (Vals AI)Not measured56.0%Only Gemini 4 Argon measured
Vibe Code Bench 1-100 (Vals AI)Not measured21.2%Only Gemini 4 Argon measured
SkillsBench (Vals AI)52.7%Not measuredOnly Gemini 3.5 Flash measured
CyberBench (Vals AI)Not measured77.9%Only Gemini 4 Argon measured
SciCode53.9%61.8%Gemini 4 Argon
Terminal-Bench Hard (Artificial Analysis run)46.2%Not measuredOnly Gemini 3.5 Flash measured
FrontierCodeNot measured47.5%Only Gemini 4 Argon measured
FrontierSWENot measured55.0%Only Gemini 4 Argon measured
WeirdML62.6%Not measuredOnly Gemini 3.5 Flash measured
MirrorCodeNot measured58.9%Only Gemini 4 Argon measured
ALE-Bench911.02100.1Gemini 4 Argon
LMArena Text: coding14931546Gemini 4 Argon
LMArena Text: software and IT14941556Gemini 4 Argon
LMArena WebDev: React14951692Gemini 4 Argon
LMArena WebDev: HTML15221643Gemini 4 Argon
LMArena WebDev: from an image1504Not measuredOnly Gemini 3.5 Flash measured
SciCode12.3%12.3%Tie
Neither model has a result on the other 12 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
AA Intelligence Index33.652.6Gemini 4 Argon
Epoch Capabilities Index154.9166.4Gemini 4 Argon
Agentic workLike-for-likePublic boards, shown as published, kept out of the index07
Agentic work benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
Design Arena: agents building web apps1202Not measuredOnly Gemini 3.5 Flash measured
Design Arena: agents building full-stack apps1197Not measuredOnly Gemini 3.5 Flash measured
Design Arena: agents building mobile apps1174Not measuredOnly Gemini 3.5 Flash measured
Design Arena: agents building Android apps1185Not measuredOnly Gemini 3.5 Flash measured
Design Arena: agents building Godot games1098Not measuredOnly Gemini 3.5 Flash measured
Design Arena: agents building games1180Not measuredOnly Gemini 3.5 Flash measured
Design Arena: HTML slides1093Not measuredOnly Gemini 3.5 Flash measured
Design Arena: PowerPoint slides1154Not measuredOnly Gemini 3.5 Flash measured
Design Arena: spreadsheetsNot measured1157Only Gemini 4 Argon measured
LiveBench researchNot measured83.1%Only Gemini 4 Argon measured
LiveBench browserNot measured92.0%Only Gemini 4 Argon measured
LiveBench long agenticNot measured69.9%Only Gemini 4 Argon measured
SREBench (Vals AI)Not measured44.3%Only Gemini 4 Argon measured
Finance Agent (Vals AI)57.9%65.4%Gemini 4 Argon
Tax Agent Bench (Vals AI)21.6%44.6%Gemini 4 Argon
Legal Research Bench (Vals AI)30.8%54.8%Gemini 4 Argon
Harvey's Legal Agent Benchmark (Vals AI)Not measured27.1%Only Gemini 4 Argon measured
Excel Modeling Benchmark (Vals AI)63.5%75.2%Gemini 4 Argon
BioMysteryBench (Vals AI)Not measured76.3%Only Gemini 4 Argon measured
Terminal-Bench-Science (Vals AI)5.7%44.3%Gemini 4 Argon
Vals Science IndexNot measured55.4%Only Gemini 4 Argon measured
Time Horizon Index (Vals AI)Not measured52.5%Only Gemini 4 Argon measured
CUA-bench (Vals AI)Not measured4.8%Only Gemini 4 Argon measured
Robo-bench (Vals AI)Not measured0.8%Only Gemini 4 Argon measured
τ²-Bench Telecom95.6%Not measuredOnly Gemini 3.5 Flash measured
APEX-Agents27.5%82.4%Gemini 4 Argon
Vending-Bench 2$5,396$13,718Gemini 4 Argon
Neither model has a result on the other 14 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index010
Reasoning benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
GPQA Diamond92.7%Not measuredOnly Gemini 3.5 Flash measured
LiveBench reasoningNot measured95.1%Only Gemini 4 Argon measured
MysteryMechanism (Vals AI)Not measured45.5%Only Gemini 4 Argon measured
MMMU Pro (Vals AI)88.3%Not measuredOnly Gemini 3.5 Flash measured
GPQA Diamond (Artificial Analysis run)92.2%Not measuredOnly Gemini 3.5 Flash measured
Humanity's Last Exam (Artificial Analysis run)42.7%57.1%Gemini 4 Argon
GPQA Diamond (Epoch AI run)92.8%96.4%Gemini 4 Argon
ARC-AGI92.5%98.5%Gemini 4 Argon
ARC-AGI-272.1%91.3%Gemini 4 Argon
SimpleBench76.7%Not measuredOnly Gemini 3.5 Flash measured
Chess puzzles45.0%59.0%Gemini 4 Argon
Mystery game puzzles32.0%64.0%Gemini 4 Argon
EBR-bench4.8%64.8%Gemini 4 Argon
LMArena Text: hard prompts14881546Gemini 4 Argon
LMArena Text: expert14951550Gemini 4 Argon
LMArena Text: hard prompts in English14831548Gemini 4 Argon
LMArena Vision: diagrams1323Not measuredOnly Gemini 3.5 Flash measured
LMArena Vision: homework1330Not measuredOnly Gemini 3.5 Flash measured
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index06
Math benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
OTIS Mock AIME95.6%100.0%Gemini 4 Argon
FrontierMath, tiers 1 to 362.8%86.0%Gemini 4 Argon
FrontierMath, tier 426.8%78.0%Gemini 4 Argon
ProofBench31.0%99.0%Gemini 4 Argon
LMArena Text: math15041536Gemini 4 Argon
LMArena Text: mathematical work14951557Gemini 4 Argon
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index07
Knowledge benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
MMLU Pro89.5%Not measuredOnly Gemini 3.5 Flash measured
LegalBench (Vals AI)83.6%88.3%Gemini 4 Argon
CorpFin (Vals AI)64.7%Not measuredOnly Gemini 3.5 Flash measured
TaxEval (Vals AI)74.4%Not measuredOnly Gemini 3.5 Flash measured
MortgageTax (Vals AI)68.1%Not measuredOnly Gemini 3.5 Flash measured
MedCode (Vals AI)55.8%58.8%Gemini 4 Argon
SimpleQA Verified66.2%76.0%Gemini 4 Argon
LMArena Text: science14951548Gemini 4 Argon
LMArena Text: medicine and healthcare14831555Gemini 4 Argon
LMArena Text: legal and government14881548Gemini 4 Argon
LMArena Text: business and finance14671525Gemini 4 Argon
FACTS Benchmark Suite63.1%Not measuredOnly Gemini 3.5 Flash measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index06
Web design benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
Design Arena: websites12671315Gemini 4 Argon
Design Arena: UI components12691333Gemini 4 Argon
Design Arena: game dev12631377Gemini 4 Argon
Design Arena: data viz12361332Gemini 4 Argon
Design Arena: 3D12431388Gemini 4 Argon
Design Arena: all code categories12661329Gemini 4 Argon
Design Arena: SVG1253Not measuredOnly Gemini 3.5 Flash measured
Design Arena: ASCII art1254Not measuredOnly Gemini 3.5 Flash measured
LiveBench designNot measured73.7%Only Gemini 4 Argon measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index018
General benchmarks for Gemini 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
Vals IndexNot measured69.2%Only Gemini 4 Argon measured
LiveBench data analysisNot measured85.2%Only Gemini 4 Argon measured
Public Benefits Bench (Vals AI)59.5%69.8%Gemini 4 Argon
SAGE (Vals AI)49.9%53.6%Gemini 4 Argon
MedScribe (Vals AI)76.6%87.4%Gemini 4 Argon
Vals Multimodal Index62.9%Not measuredOnly Gemini 3.5 Flash measured
IFBench76.3%Not measuredOnly Gemini 3.5 Flash measured
Long context reasoning (AA-LCR)74.3%79.7%Gemini 4 Argon
DTBench94.7%97.6%Gemini 4 Argon
LMCA47.1%63.7%Gemini 4 Argon
Surface Evolver Bench58.1%Not measuredOnly Gemini 3.5 Flash measured
Furniture assemblyNot measured72.5%Only Gemini 4 Argon measured
LMArena Text14821532Gemini 4 Argon
LMArena Text: instruction following14671534Gemini 4 Argon
LMArena Text: creative writing14701527Gemini 4 Argon
LMArena Vision1308Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: English14811538Gemini 4 Argon
LMArena Text: non-English14751522Gemini 4 Argon
LMArena Text: Chinese15271611Gemini 4 Argon
LMArena Text: German1494Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: Japanese1486Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: Korean1448Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: French1490Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: Spanish14801503Gemini 4 Argon
LMArena Text: Russian14931534Gemini 4 Argon
LMArena Text: Polish1516Not measuredOnly Gemini 3.5 Flash measured
LMArena Text: multi-turn14811556Gemini 4 Argon
LMArena Text: longer queries14831547Gemini 4 Argon
LMArena Text: writing and language14781529Gemini 4 Argon
LMArena Text: entertainment and media14591527Gemini 4 Argon
LMArena Vision: English1305Not measuredOnly Gemini 3.5 Flash measured
LMArena Vision: Chinese1377Not measuredOnly Gemini 3.5 Flash measured
LMArena Vision: reading text1317Not measuredOnly Gemini 3.5 Flash measured
LMArena Vision: humor1321Not measuredOnly Gemini 3.5 Flash measured
LMArena Vision: creative writing1301Not measuredOnly Gemini 3.5 Flash measured
LMArena Document1463Not measuredOnly Gemini 3.5 Flash 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 3.5 Flash and Gemini 4 Argon
BenchmarkGemini 3.5 FlashGemini 4 ArgonLeader
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 3.5 Flash$0.0060Fits in one request
Gemini 4 Argon$0.0070Fits in one request

Gemini 3.5 Flash costs less

Repository review

50K input + 3K output tokens

Gemini 3.5 Flash$0.102Fits in one request
Gemini 4 Argon$0.130Fits in one request

Gemini 3.5 Flash costs less

Agent loop

200K input + 10K output tokens

Gemini 3.5 Flash$0.390Fits in one request
Gemini 4 Argon$0.500Fits in one request

Gemini 3.5 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 3.5 Flash and Gemini 4 Argon
SpecificationGoogle Gemini 3.5 FlashGoogle Gemini 4 Argon
MakerGoogleGoogle
WeightsNo public weights listedNo public weights listed
ReleasedMay 19, 2026October 13, 2026
Context window1.05M1.05M
Input $/Mtok$1.50$2.00
Output $/Mtok$9.00$10.00
Coding index39.881.0
Independent measurements behind it45
Cost per solved task$1.21Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.5 Flash better than Gemini 4 Argon for coding?

Pick Gemini 4 Argon for coding: it scores 81.0 on the Vibe Coding Index against 39.8 for Gemini 3.5 Flash. Pick Gemini 3.5 Flash for output tokens 1.1x cheaper ($9.00 vs $10.00 per million) and work measured by Terminal-Bench 2.1 (Vals AI), where it leads.

Which is cheaper, Gemini 3.5 Flash or Gemini 4 Argon?

Gemini 3.5 Flash costs $1.50 per million input tokens and $9.00 per million output tokens; Gemini 4 Argon costs $2.00 and $10.00. Cost per solved task is known for Gemini 3.5 Flash only.

Which has the bigger context window, Gemini 3.5 Flash or Gemini 4 Argon?

Neither: both take 1.05M tokens.

How many benchmarks is the Gemini 3.5 Flash vs Gemini 4 Argon comparison based on?

69 benchmarks have a result for both models as of October 22, 2026. Gemini 3.5 Flash's coding index rests on 4 independent benchmarks and Gemini 4 Argon's on 5. Where only one model has a result, the page says so instead of naming a winner.

Compare next

Embed this comparison on your site

Free under CC BY 4.0, while the source link stays visible. Preview the frame · Terms and other embeds

<iframe src="https://llmbenchmark.ai/embed/compare/gemini-3-5-flash-vs-gemini-4-argon" title="Gemini 3.5 Flash vs Gemini 4 Argon, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-3-5-flash-vs-gemini-4-argon">LLMBenchmark.ai, Gemini 3.5 Flash vs Gemini 4 Argon</a></p>