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DeepSeek V4.1 Flash 1017vs.GLM-5.3-Flash

Which one is better?

DeepSeek V4.1 Flash 1017 is clearly ahead in the overall index, but costs 1.2 times as much for output and about the same for input per token.

IntelligenceOverall index, 0 to 100 · higher is better
64

DeepSeek V4.1 Flash 1017

Rank 14 to 22

34

GLM-5.3-Flash

Rank 32 to 41

SpeedTokens per second · higher is better
178

DeepSeek V4.1 Flash 1017

fast

78

GLM-5.3-Flash

fairly slow

PriceDollars per 1M tokens · lower is better
$0.26

DeepSeek V4.1 Flash 1017

cheap

$0.24

GLM-5.3-Flash

cheap

DeepSeek V4.1 Flash 1017

Subscription

No DeepSeek subscription includes this model. Through other providers from ≈ €6.36 a month (Token Plan Individual Lite, with limited credits). 7 plans in Germany.

Via API

$0.15 input, $0.60 output per 1M tokens according to the provider; the price index has listed it at $0.30 and $1 since Oct 26, 2026.

GLM-5.3-Flash

Subscription

At Z.ai from ≈ €19.08 a month (GLM Coding Plan Lite, with limited credits). Through other providers from ≈ €1.06 a month (Command Code Go, with limited credits). 26 plans in Germany.

Via API

$0.15 input, $0.50 output per 1M tokens, unchanged since Aug 29, 2026.

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.

DeepSeek V4.1 Flash 1017 ahead: 6GLM-5.3-Flash ahead: 0level: 0too little data: 4of 10 areas

DeepSeek V4.1 Flash 1017GLM-5.3-Flash0 to 100, higher is better
Areas in the overall index
CodingDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 72GLM-5.3-Flash: 39
ReasoningDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 45GLM-5.3-Flash: 18
Mathematicsonly GLM-5.3-Flash has a scoreDeepSeek V4.1 Flash 1017: not enough dataGLM-5.3-Flash: 28
Knowledgetoo little dataDeepSeek V4.1 Flash 1017: 33GLM-5.3-Flash: 21
AgentsDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 75GLM-5.3-Flash: 25
Generalonly GLM-5.3-Flash has a scoreDeepSeek V4.1 Flash 1017: not enough dataGLM-5.3-Flash: 27
MultimodalDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 55GLM-5.3-Flash: 41
Specialist fields
FinanceDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 69GLM-5.3-Flash: 50
LegalDeepSeek V4.1 Flash 1017 aheadDeepSeek V4.1 Flash 1017: 76GLM-5.3-Flash: 51
Healthonly GLM-5.3-Flash has a scoreDeepSeek V4.1 Flash 1017: not enough dataGLM-5.3-Flash: 56
Show 2 more areas that do not count toward the overall index
DeepSeek V4.1 Flash 1017GLM-5.3-Flash0 to 100, higher is better
Cybersecurityonly GLM-5.3-Flash has a scoreDeepSeek V4.1 Flash 1017: not enough dataGLM-5.3-Flash: 42
Educationonly GLM-5.3-Flash has a scoreDeepSeek V4.1 Flash 1017: not enough dataGLM-5.3-Flash: 63

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.

DeepSeek V4.1 Flash 1017

Not tested yet

GLM-5.3-Flash

GLM-5.3-Flash: Pelican on a bicycle
A community classic for free-form SVG drawing.

Reasoning (requested): high

Current attempt
Run date
Oct 1, 2026
API provider
openrouter
Requested API model
z-ai/glm-5.3-flash
API model reported in response
z-ai/glm-5.3-flash
Reasoning setting
high
Pinned endpoint
Z.AI | z-ai/glm-5.3-flash-20260826
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Passed, not a quality rating
Response time
49.7 s

Visually reviewed. This individual test does not establish overall model quality.

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

MetricDeepSeek V4.1 Flash 1017GLM-5.3-Flash
Intelligence
Overall index0 to 100, higher is better6434
RankRank 14 to 22 of 95Rank 32 to 41 of 95
Price per 1M tokens
Inputwhat you send$0.15$0.15
Outputwhat the model writes$0.60$0.50
Speed
Tokens per second17878
Technical
Context windowhow much text the model reads at once1.05 M tokens≈ 1,570 A4 pages1 M tokens≈ 1,500 A4 pages
Knowledge cutoffn/an/a
ReleasedOct 17, 2026Aug 26, 2026
AvailabilityOpen SourceOpen Source
Open weightsyesyes
  • DeepSeek V4.1 Flash 1017: At peak times (Mon, Tue, Wed, Thu, Fri, 01:00-04:00 UTC; Mon, Tue, Wed, Thu, Fri, 06:00-10:00 UTC) the price is $0.30 input and $1.20 output per 1M tokens. The table shows the off-peak price.
  • DeepSeek V4.1 Flash 1017, Time-based API pricing: Off peak: $0.15 input, $0.60 output, and $0.003 cached input. Weekdays UTC 01:00-04:00 and 06:00-10:00: $0.30, $1.20, and $0.006. Chinese public holidays are excluded. 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: DeepSeek V4.1 Flash 1017B: GLM-5.3-Flash

Code MigrationOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 44.2%GLM-5.3-Flash: 20.5%Vals AIAs of 10/18/2026
Code Migration v1.1Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 67.5%GLM-5.3-Flash: 51.6%Vals AIAs of 10/20/2026
EMBOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 61.8%GLM-5.3-Flash: 55.9%Vals AIAs of 10/20/2026
EMB v1.1Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 69.2%GLM-5.3-Flash: 66.3%Vals AIAs of 10/26/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 57%GLM-5.3-Flash: 57.9%Vals AIAs of 10/20/2026
Finance Agent v2.1Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 62.9%GLM-5.3-Flash: 60.6%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Overall · Task fully resolved · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 14.2%GLM-5.3-Flash: 10.4%Vals AIAs of 10/26/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 45.2%GLM-5.3-Flash: 45.2%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 1,666GLM-5.3-Flash: 1,607LMArenaAs of 10/27/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 44.4%GLM-5.3-Flash: 31.6%Vals AIAs of 10/26/2026
Show 54 more benchmarks
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 31.8%GLM-5.3-Flash: 37.4%Vals AIAs of 10/26/2026
Vals Finance IndexOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 60.9%GLM-5.3-Flash: 55.8%Vals AIAs of 10/26/2026
Vals IndexOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 61.3%GLM-5.3-Flash: 50.9%Vals AIAs of 10/27/2026
Vals Legal IndexOverall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 71.9%GLM-5.3-Flash: 71.1%Vals AIAs of 10/26/2026
Vals Router IndexOverall · higher is betterDeepSeek V4.1 Flash 1017: 61.3%GLM-5.3-Flash: 50.9%Vals AIAs of 10/20/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 87.7%GLM-5.3-Flash: 30.8%Vals AIAs of 10/26/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 35.6%GLM-5.3-Flash: 7.4%Vals AIAs of 10/18/2026
Code Migration v1.1CLI · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 59.2%GLM-5.3-Flash: 38.7%Vals AIAs of 10/20/2026
EMBComps · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 49.8%GLM-5.3-Flash: 44.6%Vals AIAs of 10/20/2026
EMB v1.1Comps · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 70.8%GLM-5.3-Flash: 67.7%Vals AIAs of 10/26/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 58.4%GLM-5.3-Flash: 53.2%Vals AIAs of 10/20/2026
Finance Agent v2.1Adjustments · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 66.8%GLM-5.3-Flash: 57.6%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Antitrust Competition · Criteria passed · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 93.5%GLM-5.3-Flash: 92.6%Vals AIAs of 10/26/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 59.1%GLM-5.3-Flash: 57.6%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevHTML development · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 1,705GLM-5.3-Flash: 1,578LMArenaAs of 10/27/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 23.3%GLM-5.3-Flash: 10%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 6.7%GLM-5.3-Flash: 20%Vals AIAs of 10/26/2026
Vals Finance IndexEMB v1.1 · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 69.2%GLM-5.3-Flash: 66.3%Vals AIAs of 10/26/2026
Vals IndexCode Migration v1.1 · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 68.5%GLM-5.3-Flash: 50.6%Vals AIAs of 10/27/2026
Vals Legal IndexBusiness & Commercial · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 68%GLM-5.3-Flash: 67.8%Vals AIAs of 10/26/2026
Vals Router IndexCode Migration · higher is betterDeepSeek V4.1 Flash 1017: 68.5%GLM-5.3-Flash: 50.6%Vals AIAs of 10/20/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 70%GLM-5.3-Flash: 60%Vals AIAs of 10/18/2026
Code Migration v1.1COBOL · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 92.5%GLM-5.3-Flash: 90.5%Vals AIAs of 10/20/2026
EMBDataroom · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 82.8%GLM-5.3-Flash: 65.7%Vals AIAs of 10/20/2026
EMB v1.1Dataroom · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 86.5%GLM-5.3-Flash: 80.3%Vals AIAs of 10/26/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 45.2%GLM-5.3-Flash: 46.3%Vals AIAs of 10/20/2026
Finance Agent v2.1All-Pass · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 51.3%GLM-5.3-Flash: 47.8%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Antitrust Competition · Task fully resolved · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 30%GLM-5.3-Flash: 0%Vals AIAs of 10/26/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 91.3%GLM-5.3-Flash: 90.8%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevReact development · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 1,672GLM-5.3-Flash: 1,624LMArenaAs of 10/27/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 73.2%GLM-5.3-Flash: 52.4%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 25%GLM-5.3-Flash: 25%Vals AIAs of 10/26/2026
Vals Finance IndexFinance Agent v2.1 · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 62.9%GLM-5.3-Flash: 60.6%Vals AIAs of 10/26/2026
Vals IndexEMB v1.1 · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 69.2%GLM-5.3-Flash: 66.3%Vals AIAs of 10/27/2026
Vals Legal IndexCivil Negligence · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 64.6%GLM-5.3-Flash: 66.4%Vals AIAs of 10/26/2026
Vals Router IndexCoding · higher is betterDeepSeek V4.1 Flash 1017: 62.7%GLM-5.3-Flash: 39.6%Vals AIAs of 10/20/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 3.992 / 5GLM-5.3-Flash: 4.355 / 5Vals AIAs of 10/18/2026
Code Migration v1.1Code Quality · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 3.5%GLM-5.3-Flash: 3.6%Vals AIAs of 10/20/2026
EMBDCF · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 53%GLM-5.3-Flash: 59.9%Vals AIAs of 10/20/2026
EMB v1.1DCF · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 59.7%GLM-5.3-Flash: 65.3%Vals AIAs of 10/26/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 47.5%GLM-5.3-Flash: 45.9%Vals AIAs of 10/20/2026
Finance Agent v2.1Comparables · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 59.8%GLM-5.3-Flash: 53.1%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Arbitration International Dispute Resolution · Criteria passed · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 91.8%GLM-5.3-Flash: 93.4%Vals AIAs of 10/26/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 44.2%GLM-5.3-Flash: 44.2%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevWeb development · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 1,666GLM-5.3-Flash: 1,607LMArenaAs of 10/27/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 56.4%GLM-5.3-Flash: 43.2%Vals AIAs of 10/26/2026
Terminal-Bench 4.0ML · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 42.4%GLM-5.3-Flash: 51.5%Vals AIAs of 10/26/2026
Vals Finance IndexTax Agent Bench · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 44.4%GLM-5.3-Flash: 31.6%Vals AIAs of 10/26/2026
Vals IndexFinance Agent v2.1 · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 62.9%GLM-5.3-Flash: 60.6%Vals AIAs of 10/27/2026
Vals Legal IndexCriminal · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 62.5%GLM-5.3-Flash: 60.9%Vals AIAs of 10/26/2026
Vals Router IndexEMB · higher is betterDeepSeek V4.1 Flash 1017: 69.2%GLM-5.3-Flash: 66.3%Vals AIAs of 10/20/2026
EMBLBO · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 57.8%GLM-5.3-Flash: 48%Vals AIAs of 10/20/2026
EMB v1.1LBO · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 62.5%GLM-5.3-Flash: 50%Vals AIAs of 10/26/2026
Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identicalDeepSeek V4.1 Flash 1017: 66.3%GLM-5.3-Flash: 71.5%Vals AIAs of 10/20/2026

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