Claude Haiku 5.5vs.DeepSeek V4.1 Flash 1017
Which one is better?
Level in the overall index: the gap is too small for a clear winner. Claude Haiku 5.5 is cheaper: DeepSeek V4.1 Flash 1017 costs 1.5 times (input) and 1.2 times (output) as much per token.
57
Claude Haiku 5.5
Rank 16 to 27
64
DeepSeek V4.1 Flash 1017
Rank 14 to 22
241
Claude Haiku 5.5
fast
178
DeepSeek V4.1 Flash 1017
fast
$0.20
Claude Haiku 5.5
cheap
$0.26
DeepSeek V4.1 Flash 1017
cheap
Claude Haiku 5.5
- Subscription
Free to use at Anthropic (Claude Free), more from €21.42 a month (Claude Pro). Through other providers from €6.83 a month (Poe Basic, with limited points). 29 plans in Germany.
- Via API
$0.10 input, $0.50 output per 1M tokens, unchanged since Oct 14, 2026.
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.
Haiku 5.5 ahead: 0DeepSeek V4.1 Flash 1017 ahead: 1level: 4too little data: 5of 10 areas
AreaHaiku 5.5DeepSeek V4.1 Flash 10170 to 100, higher is betterResult
Areas in the overall index
CodinglevelHaiku 5.5: 66DeepSeek V4.1 Flash 1017: 72
ReasoninglevelHaiku 5.5: 62DeepSeek V4.1 Flash 1017: 45
Mathematicsonly Haiku 5.5 has a scoreHaiku 5.5: 69DeepSeek V4.1 Flash 1017: not enough data
Knowledgetoo little dataHaiku 5.5: 10DeepSeek V4.1 Flash 1017: 33
AgentslevelHaiku 5.5: 63DeepSeek V4.1 Flash 1017: 75
Generalonly Haiku 5.5 has a scoreHaiku 5.5: 67DeepSeek V4.1 Flash 1017: not enough data
Multimodalonly DeepSeek V4.1 Flash 1017 has a scoreHaiku 5.5: not enough dataDeepSeek V4.1 Flash 1017: 55
Specialist fields
FinancelevelHaiku 5.5: 61DeepSeek V4.1 Flash 1017: 69
LegalDeepSeek V4.1 Flash 1017 aheadHaiku 5.5: 30DeepSeek V4.1 Flash 1017: 76
Healthonly Haiku 5.5 has a scoreHaiku 5.5: 76DeepSeek V4.1 Flash 1017: not enough data
Show 3 more areas that do not count toward the overall index
AreaHaiku 5.5DeepSeek V4.1 Flash 10170 to 100, higher is betterResult
Cybersecurityonly Haiku 5.5 has a scoreHaiku 5.5: 79DeepSeek V4.1 Flash 1017: not enough data
Productivityonly Haiku 5.5 has a scoreHaiku 5.5: 50DeepSeek V4.1 Flash 1017: not enough data
Educationonly Haiku 5.5 has a scoreHaiku 5.5: 79DeepSeek V4.1 Flash 1017: not enough data
See for yourself: same task, one attempt
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.
| Metric | Claude Haiku 5.5 | DeepSeek V4.1 Flash 1017 |
|---|---|---|
| Intelligence | ||
| Overall index0 to 100, higher is better | 57 | 64 |
| Rank | Rank 16 to 27 of 95 | Rank 14 to 22 of 95 |
| Price per 1M tokens | ||
| Inputwhat you send | $0.10above 100,000 tokens: $0.50 | $0.15 |
| Outputwhat the model writes | $0.50above 100,000 tokens: $2.50 | $0.60 |
| Speed | ||
| Tokens per second | 241 | 178 |
| Technical | ||
| Context windowhow much text the model reads at once | 1 M tokens≈ 1,500 A4 pages | 1.05 M tokens≈ 1,570 A4 pages |
| Knowledge cutoff | June 2026 | n/a |
| Released | Oct 7, 2026 | Oct 17, 2026 |
| Availability | Active | Open Source |
| Open weights | no | yes |
- 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: Claude Haiku 5.5B: DeepSeek V4.1 Flash 1017
AA-BriefcaseOverall · higher is betterClaude Haiku 5.5: 1,575.37 eloDeepSeek V4.1 Flash 1017: 1,570.42 eloArtificial AnalysisAs of 10/29/2026
AA-OmniscienceOverall · higher is betterClaude Haiku 5.5: 12.3 pointsDeepSeek V4.1 Flash 1017: 0.9 pointsArtificial AnalysisAs of 10/29/2026
AA-Omniscience AccuracyOverall · higher is betterClaude Haiku 5.5: 34.7%DeepSeek V4.1 Flash 1017: 39.6%Artificial AnalysisAs of 10/29/2026
AA-Omniscience Hallucination RateOverall · lower is betterClaude Haiku 5.5: 34.2%DeepSeek V4.1 Flash 1017: 64.1%Artificial AnalysisAs of 10/29/2026
Artificial Analysis Intelligence IndexOverall · higher is betterClaude Haiku 5.5: 36.235 pointsDeepSeek V4.1 Flash 1017: 32.49 pointsArtificial AnalysisAs of 10/29/2026
AutomationBench-AAOverall · higher is betterClaude Haiku 5.5: 35.4%DeepSeek V4.1 Flash 1017: 66.6%Artificial AnalysisAs of 10/29/2026
Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%DeepSeek V4.1 Flash 1017: 44.2%Vals AIAs of 10/18/2026
Code Migration v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 52.4%DeepSeek V4.1 Flash 1017: 67.5%Vals AIAs of 10/20/2026
CritPt v2Overall · higher is betterClaude Haiku 5.5: 18.9%DeepSeek V4.1 Flash 1017: 24.0%Artificial AnalysisAs of 10/29/2026
CritPt v2 (Hard Subset)Overall · higher is betterClaude Haiku 5.5: 41.0%DeepSeek V4.1 Flash 1017: 24.0%Artificial AnalysisAs of 10/29/2026
Show 54 more benchmarks
EMBOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59%DeepSeek V4.1 Flash 1017: 61.8%Vals AIAs of 10/20/2026
EMB v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 65.5%DeepSeek V4.1 Flash 1017: 69.2%Vals AIAs of 10/26/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%DeepSeek V4.1 Flash 1017: 57%Vals AIAs of 10/20/2026
Finance Agent v2.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 65.4%DeepSeek V4.1 Flash 1017: 62.9%Vals AIAs of 10/26/2026
FrontierCodeOverall · higher is betterClaude Haiku 5.5: 34.9%DeepSeek V4.1 Flash 1017: 28.5%Artificial AnalysisAs of 10/29/2026
FrontierCode 1.1 MainOverall · higher is betterClaude Haiku 5.5: 41.8%DeepSeek V4.1 Flash 1017: 43.7%Artificial AnalysisAs of 10/29/2026
GDP.pdfOverall · higher is betterClaude Haiku 5.5: 20.8%DeepSeek V4.1 Flash 1017: 17.2%Artificial AnalysisAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,628.16 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 identicalClaude Haiku 5.5: 4.2%DeepSeek V4.1 Flash 1017: 14.2%Vals AIAs of 10/26/2026
HLE-DiamondOverall · higher is betterClaude Haiku 5.5: 29.6%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 identicalClaude Haiku 5.5: 43.8%DeepSeek V4.1 Flash 1017: 45.2%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,588DeepSeek V4.1 Flash 1017: 1,666LMArenaAs of 10/27/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.9%DeepSeek V4.1 Flash 1017: 44.4%Vals AIAs of 10/26/2026
Terminal-BenchOverall · higher is betterClaude Haiku 5.5: 32.8%DeepSeek V4.1 Flash 1017: 33.8%Artificial AnalysisAs of 10/29/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.4%DeepSeek V4.1 Flash 1017: 31.8%Vals AIAs of 10/26/2026
Terminal-Bench-ScienceOverall · higher is betterClaude Haiku 5.5: 20.0%DeepSeek V4.1 Flash 1017: 12.9%Artificial AnalysisAs of 10/29/2026
Vals Finance IndexOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 57.4%DeepSeek V4.1 Flash 1017: 60.9%Vals AIAs of 10/26/2026
Vals IndexOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 58.7%DeepSeek V4.1 Flash 1017: 61.3%Vals AIAs of 10/27/2026
Vals Legal IndexOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70.3%DeepSeek V4.1 Flash 1017: 71.9%Vals AIAs of 10/26/2026
Vals Router IndexOverall · higher is betterClaude Haiku 5.5: 58.7%DeepSeek V4.1 Flash 1017: 61.3%Vals AIAs of 10/20/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 90.4%DeepSeek V4.1 Flash 1017: 87.7%Vals AIAs of 10/26/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%DeepSeek V4.1 Flash 1017: 35.6%Vals AIAs of 10/18/2026
Code Migration v1.1CLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.1%DeepSeek V4.1 Flash 1017: 59.2%Vals AIAs of 10/20/2026
EMBComps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.9%DeepSeek V4.1 Flash 1017: 49.8%Vals AIAs of 10/20/2026
EMB v1.1Comps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.7%DeepSeek V4.1 Flash 1017: 70.8%Vals AIAs of 10/26/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 49.6%DeepSeek V4.1 Flash 1017: 58.4%Vals AIAs of 10/20/2026
Finance Agent v2.1Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 67.7%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 identicalClaude Haiku 5.5: 86.2%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 identicalClaude Haiku 5.5: 50%DeepSeek V4.1 Flash 1017: 59.1%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevHTML development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,567DeepSeek V4.1 Flash 1017: 1,705LMArenaAs of 10/27/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 6.7%DeepSeek V4.1 Flash 1017: 23.3%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20%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 identicalClaude Haiku 5.5: 65.5%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 identicalClaude Haiku 5.5: 50.2%DeepSeek V4.1 Flash 1017: 68.5%Vals AIAs of 10/27/2026
Vals Legal IndexBusiness & Commercial · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 67.1%DeepSeek V4.1 Flash 1017: 68%Vals AIAs of 10/26/2026
Vals Router IndexCode Migration · higher is betterClaude Haiku 5.5: 50.2%DeepSeek V4.1 Flash 1017: 68.5%Vals AIAs of 10/20/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%DeepSeek V4.1 Flash 1017: 70%Vals AIAs of 10/18/2026
Code Migration v1.1COBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 83%DeepSeek V4.1 Flash 1017: 92.5%Vals AIAs of 10/20/2026
EMBDataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.5%DeepSeek V4.1 Flash 1017: 82.8%Vals AIAs of 10/20/2026
EMB v1.1Dataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.8%DeepSeek V4.1 Flash 1017: 86.5%Vals AIAs of 10/26/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.9%DeepSeek V4.1 Flash 1017: 45.2%Vals AIAs of 10/20/2026
Finance Agent v2.1All-Pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.8%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 identicalClaude Haiku 5.5: 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 identicalClaude Haiku 5.5: 88.7%DeepSeek V4.1 Flash 1017: 91.3%Vals AIAs of 10/26/2026
LMArena Code Arena WebDevReact development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,607DeepSeek V4.1 Flash 1017: 1,672LMArenaAs of 10/27/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%DeepSeek V4.1 Flash 1017: 73.2%Vals AIAs of 10/26/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 25%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 identicalClaude Haiku 5.5: 65.4%DeepSeek V4.1 Flash 1017: 62.9%Vals AIAs of 10/26/2026
Vals IndexEMB v1.1 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 65.5%DeepSeek V4.1 Flash 1017: 69.2%Vals AIAs of 10/27/2026
Vals Legal IndexCivil Negligence · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 66.1%DeepSeek V4.1 Flash 1017: 64.6%Vals AIAs of 10/26/2026
Vals Router IndexCoding · higher is betterClaude Haiku 5.5: 59%DeepSeek V4.1 Flash 1017: 62.7%Vals AIAs of 10/20/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.825 / 5DeepSeek V4.1 Flash 1017: 3.992 / 5Vals AIAs of 10/18/2026
Code Migration v1.1Code Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.1%DeepSeek V4.1 Flash 1017: 3.5%Vals AIAs of 10/20/2026
EMBDCF · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 55.1%DeepSeek V4.1 Flash 1017: 53%Vals AIAs of 10/20/2026
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