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Gemini 3.5 Flashvs.Kimi K3.1 Pro

Which one is better?

Kimi K3.1 Pro is clearly ahead in the overall index, but costs 1.3 times (input) and 1.1 times (output) as much per token.

IntelligenceOverall index, 0 to 100 · higher is better
43

Gemini 3.5 Flash

Rank 27 to 38

80

Kimi K3.1 Pro

Rank 10 to 13

SpeedTokens per second · higher is better
195

Gemini 3.5 Flash

fast

36

Kimi K3.1 Pro

slow

PriceDollars per 1M tokens · lower is better
$3.38

Gemini 3.5 Flash

fairly expensive

$4

Kimi K3.1 Pro

fairly expensive

Gemini 3.5 Flash

Subscription

At Google only in team or business plans, from ≈ €24.17 a month per seat (Gemini Code Assist Standard). Through other providers from ≈ €6.36 a month (ElevenLabs Starter, with limited credits). 41 plans in Germany.

Via API

$1.50 input, $9 output per 1M tokens, unchanged since our price tracking began on Aug 14, 2026.

Note
There is a successor: Gemini 3.6 Flash (rank 24 to 38, $0.75 input, $3.75 output).

Kimi K3.1 Pro

Subscription

At Moonshot AI from ≈ €20.14 a month (Kimi Plus, with limited credits). 4 plans in Germany.

Via API

$2 input, $10 output per 1M tokens.

Overall index with data through Oct 29, 2026 · Prices from Oct 29, 2026 · Speed: measured by Artificial Analysis · Subscriptions as of Oct 24, 2026 · Subscription prices incl. VAT

Where is the difference?

Values from 0 to 100 per task area. We only name a winner when the gap is large enough and there are enough tests.

Gemini 3.5 Flash ahead: 0Kimi K3.1 Pro ahead: 9level: 0too little data: 1of 10 areas

Gemini 3.5 FlashKimi K3.1 Pro0 to 100, higher is better
Areas in the overall index
CodingKimi K3.1 Pro aheadGemini 3.5 Flash: 25Kimi K3.1 Pro: 85
ReasoningKimi K3.1 Pro aheadGemini 3.5 Flash: 37Kimi K3.1 Pro: 80
MathematicsKimi K3.1 Pro aheadGemini 3.5 Flash: 31Kimi K3.1 Pro: 81
KnowledgeKimi K3.1 Pro aheadGemini 3.5 Flash: 69Kimi K3.1 Pro: 85
AgentsKimi K3.1 Pro aheadGemini 3.5 Flash: 43Kimi K3.1 Pro: 80
GeneralKimi K3.1 Pro aheadGemini 3.5 Flash: 39Kimi K3.1 Pro: 74
MultimodalKimi K3.1 Pro aheadGemini 3.5 Flash: 61Kimi K3.1 Pro: 75
Specialist fields
FinanceKimi K3.1 Pro aheadGemini 3.5 Flash: 45Kimi K3.1 Pro: 62
LegalKimi K3.1 Pro aheadGemini 3.5 Flash: 31Kimi K3.1 Pro: 68
Healthonly Gemini 3.5 Flash has a scoreGemini 3.5 Flash: 48Kimi K3.1 Pro: not enough data
Show 1 more areas that do not count toward the overall index
Gemini 3.5 FlashKimi K3.1 Pro0 to 100, higher is better
Productivityonly Gemini 3.5 Flash has a scoreGemini 3.5 Flash: 23Kimi K3.1 Pro: not enough data

See for yourself: same task, one attempt

The same prompt for both models. We show the latest attempt without fixes; it does not count toward the overall index.

Pelican on a bicycle

A community classic for free-form SVG drawing.

Gemini 3.5 Flash

The response reached the token limit. No complete recording is available.

Reasoning (requested): high

Current attempt
Run date
Oct 6, 2026
API provider
openrouter
Requested API model
google/gemini-3.5-flash
API model reported in response
google/gemini-3.5-flash
Reasoning setting
high
Pinned endpoint
Google AI Studio | google/gemini-3.5-flash-20260519
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Failed
Response time
31.7 s

Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.

Earlier attempts (3)
  • Oct 2, 2026API request failedReasoning setting: high
  • Oct 1, 2026API request failedReasoning setting: high
  • Sep 7, 2026API request failedReasoning setting: high

Kimi K3.1 Pro

Not tested yet

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)
SVG short test

There is no shared test round for this selection. Results from different rounds are not mixed.

All data side by side

The better value is bold. For the overall index only when the gap is clear.

MetricGemini 3.5 FlashKimi K3.1 Pro
Intelligence
Overall index0 to 100, higher is better4380
RankRank 27 to 38 of 95Rank 10 to 13 of 95
Price per 1M tokens
Inputwhat you send$1.50$2
Outputwhat the model writes$9$10
Speed
Tokens per second19536
Technical
Context windowhow much text the model reads at once1.05 M tokens≈ 1,570 A4 pages1.05 M tokens≈ 1,570 A4 pages
Knowledge cutoffn/an/a
ReleasedMay 19, 2026Oct 23, 2026
AvailabilityActiveActive
Open weightsnon/a
  • Kimi K3.1 Pro, API price listed by Artificial Analysis: $2 input, $10 output, and $0.20 cached input per 1 million tokens. Kimi's official API publishes CNY rates separately. Source
  • Kimi K3.1 Pro, Official API pricing: K3.1 Pro: CNY 13 input, CNY 68 output, CNY 13 cache write, and CNY 1.30 cache hit per million tokens. Source
  • Kimi K3.1 Pro, Highspeed API pricing: CNY 26 input, CNY 136 output, CNY 26 cache write, and CNY 1.30 cache hit per million tokens. Source
  • Kimi K3.1 Pro, International API pricing in USD: The international Kimi platform lists $2 input, $10 output, $2 cache write and $0.20 cache hit per million tokens. Highspeed costs $4/$20/$4/$0.20. Checked October 29, 2026. Separately documented CNY tariffs remain separate observations. Source

Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis

Shared benchmarks

Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.

A: Gemini 3.5 FlashB: Kimi K3.1 Pro

Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 30.8%Kimi K3.1 Pro: 37.5%Vals AIAs of 10/26/2026
ProofBench v1.1Overall · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 31%Kimi K3.1 Pro: 91%Vals AIAs of 10/24/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 21.7%Kimi K3.1 Pro: 24.9%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 6.1%Kimi K3.1 Pro: 63.6%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceOverall · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 5.7%Kimi K3.1 Pro: 31.4%Vals AIAs of 10/25/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 48.7%Kimi K3.1 Pro: 84.9%Vals AIAs of 10/26/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 43.9%Kimi K3.1 Pro: 56.1%Vals AIAs of 10/26/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 3.1%Kimi K3.1 Pro: 10%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 6.7%Kimi K3.1 Pro: 40%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceEarth Sciences · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 25%Kimi K3.1 Pro: 12.5%Vals AIAs of 10/25/2026
Show 38 more benchmarks
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 87.1%Kimi K3.1 Pro: 81.9%Vals AIAs of 10/26/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 34.2%Kimi K3.1 Pro: 58%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 0%Kimi K3.1 Pro: 58.3%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceEngineering Sciences · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 0%Kimi K3.1 Pro: 22.2%Vals AIAs of 10/25/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 27.9%Kimi K3.1 Pro: 27.9%Vals AIAs of 10/26/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 26.4%Kimi K3.1 Pro: 36.7%Vals AIAs of 10/26/2026
Terminal-Bench 4.0ML · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 6.1%Kimi K3.1 Pro: 81.8%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceLife Sciences · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 5.3%Kimi K3.1 Pro: 36.8%Vals AIAs of 10/25/2026
Legal Research BenchBusiness & Commercial · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 84.1%Kimi K3.1 Pro: 66.3%Vals AIAs of 10/26/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 61.6%Kimi K3.1 Pro: 64.8%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Operations · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 7.4%Kimi K3.1 Pro: 55.6%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceMathematical Sciences · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 0%Kimi K3.1 Pro: 23.5%Vals AIAs of 10/25/2026
Legal Research BenchCivil Litigation · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 22.2%Kimi K3.1 Pro: 29.6%Vals AIAs of 10/26/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 16.3%Kimi K3.1 Pro: 27.9%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Science · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 11.9%Kimi K3.1 Pro: 73.8%Vals AIAs of 10/26/2026
Terminal-Bench-SciencePhysical Sciences · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 5.9%Kimi K3.1 Pro: 47.1%Vals AIAs of 10/25/2026
Legal Research BenchCivil Litigation · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 86.3%Kimi K3.1 Pro: 75.8%Vals AIAs of 10/26/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 58.1%Kimi K3.1 Pro: 68.8%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Security · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 0%Kimi K3.1 Pro: 73.3%Vals AIAs of 10/26/2026
Legal Research BenchConstitutional / Civil Rights · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 28.9%Kimi K3.1 Pro: 31.6%Vals AIAs of 10/26/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 16.7%Kimi K3.1 Pro: 13.3%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Software · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 3.7%Kimi K3.1 Pro: 53.7%Vals AIAs of 10/26/2026
Legal Research BenchConstitutional / Civil Rights · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 85.2%Kimi K3.1 Pro: 74.5%Vals AIAs of 10/26/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 45.9%Kimi K3.1 Pro: 61.9%Vals AIAs of 10/26/2026
Legal Research BenchCriminal · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 26.3%Kimi K3.1 Pro: 28.1%Vals AIAs of 10/26/2026
Tax Agent BenchNumbers & Calculations · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 46.7%Kimi K3.1 Pro: 30%Vals AIAs of 10/26/2026
Legal Research BenchCriminal · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 82.4%Kimi K3.1 Pro: 69.7%Vals AIAs of 10/26/2026
Tax Agent BenchNumbers & Calculations · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 72.5%Kimi K3.1 Pro: 72.9%Vals AIAs of 10/26/2026
Legal Research BenchFamily · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 18.2%Kimi K3.1 Pro: 13.6%Vals AIAs of 10/26/2026
Tax Agent BenchRule & Source Lookup · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 23.1%Kimi K3.1 Pro: 30%Vals AIAs of 10/26/2026
Legal Research BenchFamily · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 74.9%Kimi K3.1 Pro: 63.6%Vals AIAs of 10/26/2026
Tax Agent BenchRule & Source Lookup · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 46.8%Kimi K3.1 Pro: 53.8%Vals AIAs of 10/26/2026
Legal Research BenchHealth · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 43.3%Kimi K3.1 Pro: 73.3%Vals AIAs of 10/26/2026
Tax Agent BenchWeighted Pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 53.5%Kimi K3.1 Pro: 63.7%Vals AIAs of 10/26/2026
Legal Research BenchHealth · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 91.5%Kimi K3.1 Pro: 90.5%Vals AIAs of 10/26/2026
Legal Research BenchImmigration · All-pass · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 18.2%Kimi K3.1 Pro: 18.2%Vals AIAs of 10/26/2026
Legal Research BenchImmigration · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 80.2%Kimi K3.1 Pro: 32.7%Vals AIAs of 10/26/2026
Legal Research BenchOverall · Weighted partial credit · higher is betterTest setup not documented as identicalGemini 3.5 Flash: 83.9%Kimi K3.1 Pro: 71.4%Vals AIAs of 10/26/2026

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