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GPT-6.1 Terravs.DeepSeek V4.1 Flash 1017

Which one is better?

Level in the overall index: the gap is too small for a clear winner. DeepSeek V4.1 Flash 1017 is cheaper: GPT-6.1 Terra costs 6.7 times (input) and 8.3 times (output) as much per token.

IntelligenceOverall index, 0 to 100 · higher is better
67

GPT-6.1 Terra

Rank 12 to 27

64

DeepSeek V4.1 Flash 1017

Rank 14 to 22

SpeedTokens per second · higher is better
91

GPT-6.1 Terra

fairly slow

178

DeepSeek V4.1 Flash 1017

fast

PriceDollars per 1M tokens · lower is better
$2

GPT-6.1 Terra

fairly expensive

$0.26

DeepSeek V4.1 Flash 1017

cheap

GPT-6.1 Terra

Subscription

Subscriptions in Germany: n/a

Via API

$1 input, $5 output per 1M tokens.

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.

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.

GPT-6.1 Terra ahead: 4DeepSeek V4.1 Flash 1017 ahead: 2level: 1too little data: 0of 7 areas

GPT-6.1 TerraDeepSeek V4.1 Flash 10170 to 100, higher is better
Areas in the overall index
CodingGPT-6.1 Terra aheadGPT-6.1 Terra: 84DeepSeek V4.1 Flash 1017: 72
ReasoningGPT-6.1 Terra aheadGPT-6.1 Terra: 88DeepSeek V4.1 Flash 1017: 45
KnowledgeGPT-6.1 Terra aheadGPT-6.1 Terra: 80DeepSeek V4.1 Flash 1017: 33
AgentsDeepSeek V4.1 Flash 1017 aheadGPT-6.1 Terra: 57DeepSeek V4.1 Flash 1017: 75
MultimodalGPT-6.1 Terra aheadGPT-6.1 Terra: 70DeepSeek V4.1 Flash 1017: 55
Specialist fields
FinancelevelGPT-6.1 Terra: 45DeepSeek V4.1 Flash 1017: 69
LegalDeepSeek V4.1 Flash 1017 aheadGPT-6.1 Terra: 8DeepSeek V4.1 Flash 1017: 76

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.

GPT-6.1 Terra

Not tested yet

DeepSeek V4.1 Flash 1017

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)

All data side by side

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

MetricGPT-6.1 TerraDeepSeek V4.1 Flash 1017
Intelligence
Overall index0 to 100, higher is better6764
RankRank 12 to 27 of 95Rank 14 to 22 of 95
Price per 1M tokens
Inputwhat you send$1above 272,000 tokens: $2$0.15
Outputwhat the model writes$5above 272,000 tokens: $7.50$0.60
Speed
Tokens per second91178
Technical
Context windowhow much text the model reads at once1.05 M tokens≈ 1,580 A4 pages1.05 M tokens≈ 1,570 A4 pages
Knowledge cutoffJun 1, 2026n/a
ReleasedOct 26, 2026Oct 17, 2026
AvailabilityActiveOpen Source
Open weightsnoyes
  • GPT-6.1 Terra, 12-hour cache write: The table's cache-write rate covers 30-minute retention. With 12-hour retention it is $2.50 per 1M tokens through 272,000 input tokens, $5 above. Source
  • GPT-6.1 Terra, Long-context billing: Above 272,000 input tokens, the higher rates apply to the entire request. Input and cache rates double, while output costs 1.5 times the standard rate. Source
  • GPT-6.1 Terra, Batch and Flex pricing: 50% off standard pricing Source
  • GPT-6.1 Terra, Fast pricing: Fast mode costs twice the standard price Source
  • GPT-6.1 Terra, Regional processing: 10% surcharge over standard processing Source
  • 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: GPT-6.1 TerraB: DeepSeek V4.1 Flash 1017

AA-BriefcaseOverall · higher is betterGPT-6.1 Terra: 1,401.68 eloDeepSeek V4.1 Flash 1017: 1,570.42 eloArtificial AnalysisAs of 10/29/2026
AA-OmniscienceOverall · higher is betterGPT-6.1 Terra: 29.567 pointsDeepSeek V4.1 Flash 1017: 0.9 pointsArtificial AnalysisAs of 10/29/2026
AA-Omniscience AccuracyOverall · higher is betterGPT-6.1 Terra: 47.6%DeepSeek V4.1 Flash 1017: 39.6%Artificial AnalysisAs of 10/29/2026
AA-Omniscience Hallucination RateOverall · lower is betterGPT-6.1 Terra: 34.5%DeepSeek V4.1 Flash 1017: 64.1%Artificial AnalysisAs of 10/29/2026
Artificial Analysis Intelligence IndexOverall · higher is betterGPT-6.1 Terra: 50.977 pointsDeepSeek V4.1 Flash 1017: 32.49 pointsArtificial AnalysisAs of 10/29/2026
AutomationBench-AAOverall · higher is betterGPT-6.1 Terra: 60.2%DeepSeek V4.1 Flash 1017: 66.6%Artificial AnalysisAs of 10/29/2026
CritPt v2Overall · higher is betterGPT-6.1 Terra: 28.0%DeepSeek V4.1 Flash 1017: 24.0%Artificial AnalysisAs of 10/29/2026
CritPt v2 (Hard Subset)Overall · higher is betterGPT-6.1 Terra: 64.5%DeepSeek V4.1 Flash 1017: 24.0%Artificial AnalysisAs of 10/29/2026
EMB v1.1Overall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 73.3%DeepSeek V4.1 Flash 1017: 69.2%Vals AIAs of 10/26/2026
Finance Agent v2.1Overall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 56%DeepSeek V4.1 Flash 1017: 62.9%Vals AIAs of 10/26/2026
Show 54 more benchmarks
FrontierCodeOverall · higher is betterGPT-6.1 Terra: 42.3%DeepSeek V4.1 Flash 1017: 28.5%Artificial AnalysisAs of 10/29/2026
FrontierCode 1.1 MainOverall · higher is betterGPT-6.1 Terra: 36.0%DeepSeek V4.1 Flash 1017: 43.7%Artificial AnalysisAs of 10/29/2026
GDP.pdfOverall · higher is betterGPT-6.1 Terra: 28.6%DeepSeek V4.1 Flash 1017: 17.2%Artificial AnalysisAs of 10/29/2026
GDPval-AAOverall · higher is betterGPT-6.1 Terra: 1,476.05 eloDeepSeek V4.1 Flash 1017: 1,745.77 eloArtificial AnalysisAs of 10/29/2026
HLAB-Vals-1.1Overall · Task fully resolved · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 1.7%DeepSeek V4.1 Flash 1017: 14.2%Vals AIAs of 10/26/2026
HLE-DiamondOverall · higher is betterGPT-6.1 Terra: 47.3%DeepSeek V4.1 Flash 1017: 25.3%Artificial AnalysisAs of 10/29/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 26%DeepSeek V4.1 Flash 1017: 45.2%Vals AIAs of 10/26/2026
MMMU-ProOverall · higher is betterGPT-6.1 Terra: 84.7%DeepSeek V4.1 Flash 1017: 80.6%Artificial AnalysisAs of 10/29/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 15.2%DeepSeek V4.1 Flash 1017: 44.4%Vals AIAs of 10/26/2026
Terminal-BenchOverall · higher is betterGPT-6.1 Terra: 55.6%DeepSeek V4.1 Flash 1017: 33.8%Artificial AnalysisAs of 10/29/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 49.5%DeepSeek V4.1 Flash 1017: 31.8%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceOverall · higher is betterGPT-6.1 Terra: 57.6%DeepSeek V4.1 Flash 1017: 12.9%Artificial AnalysisAs of 10/29/2026
Vals Finance IndexOverall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 52.9%DeepSeek V4.1 Flash 1017: 60.9%Vals AIAs of 10/26/2026
Vals IndexOverall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 60.5%DeepSeek V4.1 Flash 1017: 61.3%Vals AIAs of 10/27/2026
Vals Legal IndexOverall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 58.6%DeepSeek V4.1 Flash 1017: 71.9%Vals AIAs of 10/26/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 84%DeepSeek V4.1 Flash 1017: 87.7%Vals AIAs of 10/26/2026
EMB v1.1Comps · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 75.6%DeepSeek V4.1 Flash 1017: 70.8%Vals AIAs of 10/26/2026
Finance Agent v2.1Adjustments · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 50.6%DeepSeek V4.1 Flash 1017: 66.8%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Antitrust Competition · Criteria passed · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 83%DeepSeek V4.1 Flash 1017: 93.5%Vals AIAs of 10/26/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 45.5%DeepSeek V4.1 Flash 1017: 59.1%Vals AIAs of 10/26/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 5.9%DeepSeek V4.1 Flash 1017: 23.3%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 26.7%DeepSeek V4.1 Flash 1017: 6.7%Vals AIAs of 10/26/2026
Vals Finance IndexEMB v1.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 73.3%DeepSeek V4.1 Flash 1017: 69.2%Vals AIAs of 10/26/2026
Vals IndexCode Migration v1.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 72.2%DeepSeek V4.1 Flash 1017: 68.5%Vals AIAs of 10/27/2026
Vals Legal IndexBusiness & Commercial · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 51.6%DeepSeek V4.1 Flash 1017: 68%Vals AIAs of 10/26/2026
EMB v1.1Dataroom · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 86.3%DeepSeek V4.1 Flash 1017: 86.5%Vals AIAs of 10/26/2026
Finance Agent v2.1All-Pass · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 42.6%DeepSeek V4.1 Flash 1017: 51.3%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Antitrust Competition · Task fully resolved · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 0%DeepSeek V4.1 Flash 1017: 30%Vals AIAs of 10/26/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 84.8%DeepSeek V4.1 Flash 1017: 91.3%Vals AIAs of 10/26/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 42.5%DeepSeek V4.1 Flash 1017: 73.2%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 58.3%DeepSeek V4.1 Flash 1017: 25%Vals AIAs of 10/26/2026
Vals Finance IndexFinance Agent v2.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 56%DeepSeek V4.1 Flash 1017: 62.9%Vals AIAs of 10/26/2026
Vals IndexEMB v1.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 73.3%DeepSeek V4.1 Flash 1017: 69.2%Vals AIAs of 10/27/2026
Vals Legal IndexCivil Negligence · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 50.5%DeepSeek V4.1 Flash 1017: 64.6%Vals AIAs of 10/26/2026
EMB v1.1DCF · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 64.3%DeepSeek V4.1 Flash 1017: 59.7%Vals AIAs of 10/26/2026
Finance Agent v2.1Comparables · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 50.4%DeepSeek V4.1 Flash 1017: 59.8%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Arbitration International Dispute Resolution · Criteria passed · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 88.4%DeepSeek V4.1 Flash 1017: 91.8%Vals AIAs of 10/26/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 16.3%DeepSeek V4.1 Flash 1017: 44.2%Vals AIAs of 10/26/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 22.1%DeepSeek V4.1 Flash 1017: 56.4%Vals AIAs of 10/26/2026
Terminal-Bench 4.0ML · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 42.4%DeepSeek V4.1 Flash 1017: 42.4%Vals AIAs of 10/26/2026
Vals Finance IndexTax Agent Bench · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 15.2%DeepSeek V4.1 Flash 1017: 44.4%Vals AIAs of 10/26/2026
Vals IndexFinance Agent v2.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 56%DeepSeek V4.1 Flash 1017: 62.9%Vals AIAs of 10/27/2026
Vals Legal IndexCriminal · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 51.3%DeepSeek V4.1 Flash 1017: 62.5%Vals AIAs of 10/26/2026
EMB v1.1LBO · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 64.1%DeepSeek V4.1 Flash 1017: 62.5%Vals AIAs of 10/26/2026
Finance Agent v2.1Disclosure Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 64.2%DeepSeek V4.1 Flash 1017: 70.3%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Arbitration International Dispute Resolution · Task fully resolved · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 0%DeepSeek V4.1 Flash 1017: 10%Vals AIAs of 10/26/2026
Legal Research BenchBusiness & Commercial · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 75.9%DeepSeek V4.1 Flash 1017: 87.8%Vals AIAs of 10/26/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 53.1%DeepSeek V4.1 Flash 1017: 75%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Operations · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 40.7%DeepSeek V4.1 Flash 1017: 18.5%Vals AIAs of 10/26/2026
Vals IndexHLAB-Vals-1.1 · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 1.7%DeepSeek V4.1 Flash 1017: 14.2%Vals AIAs of 10/27/2026
Vals Legal IndexFamily · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 4.5%DeepSeek V4.1 Flash 1017: 27.3%Vals AIAs of 10/26/2026
EMB v1.1M&A · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 80.7%DeepSeek V4.1 Flash 1017: 73.1%Vals AIAs of 10/26/2026
Finance Agent v2.1Earnings Analysis · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 83%DeepSeek V4.1 Flash 1017: 93%Vals AIAs of 10/26/2026
HLAB-Vals-1.1Banking Finance · Criteria passed · higher is betterTest setup not documented as identicalGPT-6.1 Terra: 90.1%DeepSeek V4.1 Flash 1017: 74.8%Vals AIAs of 10/26/2026

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