GPT-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. DeepSeek V4.1 Flash 1017 is cheaper: GPT-5.5 costs 33.3 times (input) and 50 times (output) as much per token.
53
GPT-5.5
Rank 19 to 35
64
DeepSeek V4.1 Flash 1017
Rank 14 to 22
89
GPT-5.5
fairly slow
178
DeepSeek V4.1 Flash 1017
fast
$11.25
GPT-5.5
expensive
$0.26
DeepSeek V4.1 Flash 1017
cheap
GPT-5.5
- Subscription
No OpenAI subscription includes this model. Through other providers from ≈ €6.36 a month (ElevenLabs Starter, with limited credits). 41 plans in Germany.
- Via API
$5 input, $30 output per 1M tokens, unchanged since our price tracking began on Aug 14, 2026.
- Note
- There is a successor: GPT-5.6 Sol (rank 12 to 18, $4 input, $20 output).
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-5.5 ahead: 1DeepSeek V4.1 Flash 1017 ahead: 4level: 1too little data: 4of 10 areas
AreaGPT-5.5DeepSeek V4.1 Flash 10170 to 100, higher is betterResult
Areas in the overall index
CodingDeepSeek V4.1 Flash 1017 aheadGPT-5.5: 39DeepSeek V4.1 Flash 1017: 72
ReasoninglevelGPT-5.5: 50DeepSeek V4.1 Flash 1017: 45
Mathematicsonly GPT-5.5 has a scoreGPT-5.5: 59DeepSeek V4.1 Flash 1017: not enough data
KnowledgeGPT-5.5 aheadGPT-5.5: 64DeepSeek V4.1 Flash 1017: 33
AgentsDeepSeek V4.1 Flash 1017 aheadGPT-5.5: 46DeepSeek V4.1 Flash 1017: 75
Generalonly GPT-5.5 has a scoreGPT-5.5: 50DeepSeek V4.1 Flash 1017: not enough data
Multimodaltoo little dataGPT-5.5: 51DeepSeek V4.1 Flash 1017: 55
Specialist fields
FinanceDeepSeek V4.1 Flash 1017 aheadGPT-5.5: 49DeepSeek V4.1 Flash 1017: 69
LegalDeepSeek V4.1 Flash 1017 aheadGPT-5.5: 57DeepSeek V4.1 Flash 1017: 76
Healthonly GPT-5.5 has a scoreGPT-5.5: 59DeepSeek V4.1 Flash 1017: not enough data
Show 2 more areas that do not count toward the overall index
AreaGPT-5.5DeepSeek V4.1 Flash 10170 to 100, higher is betterResult
Searchonly GPT-5.5 has a scoreGPT-5.5: 87DeepSeek V4.1 Flash 1017: not enough data
Productivityonly GPT-5.5 has a scoreGPT-5.5: 35DeepSeek V4.1 Flash 1017: 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.
GPT-5.5
Reasoning (requested): high
Current attempt
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- openai/gpt-5.5
- API model reported in response
- openai/gpt-5.5
- Reasoning setting
- high
- Pinned endpoint
- OpenAI | openai/gpt-5.5-20260423
- 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
- 25.9 s
Visually reviewed. This individual test does not establish overall model quality.
Earlier attempts (1)
- Sep 7, 2026API request failedReasoning setting: high
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)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.
| Metric | GPT-5.5 | DeepSeek V4.1 Flash 1017 |
|---|---|---|
| Intelligence | ||
| Overall index0 to 100, higher is better | 53 | 64 |
| Rank | Rank 19 to 35 of 95 | Rank 14 to 22 of 95 |
| Price per 1M tokens | ||
| Inputwhat you send | $5above 272,000 tokens: $10 | $0.15 |
| Outputwhat the model writes | $30above 272,000 tokens: $45 | $0.60 |
| Speed | ||
| Tokens per second | 89 | 178 |
| Technical | ||
| Context windowhow much text the model reads at once | 1.05 M tokens≈ 1,580 A4 pages | 1.05 M tokens≈ 1,570 A4 pages |
| Knowledge cutoff | Dec 1, 2025 | n/a |
| Released | Apr 23, 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: GPT-5.5B: DeepSeek V4.1 Flash 1017
Code MigrationOverall · higher is betterTest setup not documented as identicalGPT-5.5: 45.2%DeepSeek V4.1 Flash 1017: 44.2%Vals AIAs of 10/18/2026
EMBOverall · higher is betterTest setup not documented as identicalGPT-5.5: 64.5%DeepSeek V4.1 Flash 1017: 61.8%Vals AIAs of 10/20/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalGPT-5.5: 51.8%DeepSeek V4.1 Flash 1017: 57%Vals AIAs of 10/20/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 40.4%DeepSeek V4.1 Flash 1017: 45.2%Vals AIAs of 10/26/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalGPT-5.5: 21.8%DeepSeek V4.1 Flash 1017: 44.4%Vals AIAs of 10/26/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalGPT-5.5: 69.8%DeepSeek V4.1 Flash 1017: 87.7%Vals AIAs of 10/26/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalGPT-5.5: 36.9%DeepSeek V4.1 Flash 1017: 35.6%Vals AIAs of 10/18/2026
EMBComps · higher is betterTest setup not documented as identicalGPT-5.5: 64.7%DeepSeek V4.1 Flash 1017: 49.8%Vals AIAs of 10/20/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalGPT-5.5: 45.7%DeepSeek V4.1 Flash 1017: 58.4%Vals AIAs of 10/20/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 53%DeepSeek V4.1 Flash 1017: 59.1%Vals AIAs of 10/26/2026
Show 48 more benchmarks
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 10%DeepSeek V4.1 Flash 1017: 23.3%Vals AIAs of 10/26/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalGPT-5.5: 70%DeepSeek V4.1 Flash 1017: 70%Vals AIAs of 10/18/2026
EMBDataroom · higher is betterTest setup not documented as identicalGPT-5.5: 81.2%DeepSeek V4.1 Flash 1017: 82.8%Vals AIAs of 10/20/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalGPT-5.5: 39.6%DeepSeek V4.1 Flash 1017: 45.2%Vals AIAs of 10/20/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 86.7%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-5.5: 54.9%DeepSeek V4.1 Flash 1017: 73.2%Vals AIAs of 10/26/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalGPT-5.5: 3.498 / 5DeepSeek V4.1 Flash 1017: 3.992 / 5Vals AIAs of 10/18/2026
EMBDCF · higher is betterTest setup not documented as identicalGPT-5.5: 56.7%DeepSeek V4.1 Flash 1017: 53%Vals AIAs of 10/20/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalGPT-5.5: 43.7%DeepSeek V4.1 Flash 1017: 47.5%Vals AIAs of 10/20/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 37.2%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-5.5: 26.7%DeepSeek V4.1 Flash 1017: 56.4%Vals AIAs of 10/26/2026
EMBLBO · higher is betterTest setup not documented as identicalGPT-5.5: 53.2%DeepSeek V4.1 Flash 1017: 57.8%Vals AIAs of 10/20/2026
Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 58.9%DeepSeek V4.1 Flash 1017: 66.3%Vals AIAs of 10/20/2026
Legal Research BenchBusiness & Commercial · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 86.8%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-5.5: 68.2%DeepSeek V4.1 Flash 1017: 75%Vals AIAs of 10/26/2026
EMBM&A · higher is betterTest setup not documented as identicalGPT-5.5: 66.8%DeepSeek V4.1 Flash 1017: 62.3%Vals AIAs of 10/20/2026
Finance Agent (v2)Earnings Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 73.2%DeepSeek V4.1 Flash 1017: 75.3%Vals AIAs of 10/20/2026
Legal Research BenchCivil Litigation · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 44.4%DeepSeek V4.1 Flash 1017: 37%Vals AIAs of 10/26/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 27.9%DeepSeek V4.1 Flash 1017: 55.8%Vals AIAs of 10/26/2026
EMBMisc · higher is betterTest setup not documented as identicalGPT-5.5: 64.6%DeepSeek V4.1 Flash 1017: 60.9%Vals AIAs of 10/20/2026
Finance Agent (v2)Financial Modeling · higher is betterTest setup not documented as identicalGPT-5.5: 22.9%DeepSeek V4.1 Flash 1017: 22.8%Vals AIAs of 10/20/2026
Legal Research BenchCivil Litigation · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 87.6%DeepSeek V4.1 Flash 1017: 84.9%Vals AIAs of 10/26/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 59.2%DeepSeek V4.1 Flash 1017: 72.5%Vals AIAs of 10/26/2026
EMBOperating · higher is betterTest setup not documented as identicalGPT-5.5: 64.5%DeepSeek V4.1 Flash 1017: 66.1%Vals AIAs of 10/20/2026
Finance Agent (v2)General Qualitative Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 65.6%DeepSeek V4.1 Flash 1017: 74.1%Vals AIAs of 10/20/2026
Legal Research BenchConstitutional / Civil Rights · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 28.9%DeepSeek V4.1 Flash 1017: 42.1%Vals AIAs of 10/26/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalGPT-5.5: 10%DeepSeek V4.1 Flash 1017: 33.3%Vals AIAs of 10/26/2026
EMBScratch · higher is betterTest setup not documented as identicalGPT-5.5: 66.8%DeepSeek V4.1 Flash 1017: 68.5%Vals AIAs of 10/20/2026
Finance Agent (v2)General Quantitative Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 73.7%DeepSeek V4.1 Flash 1017: 79.2%Vals AIAs of 10/20/2026
Legal Research BenchConstitutional / Civil Rights · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 83.7%DeepSeek V4.1 Flash 1017: 86.6%Vals AIAs of 10/26/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalGPT-5.5: 59.9%DeepSeek V4.1 Flash 1017: 79.4%Vals AIAs of 10/26/2026
EMBTemplate · higher is betterTest setup not documented as identicalGPT-5.5: 61.8%DeepSeek V4.1 Flash 1017: 54.7%Vals AIAs of 10/20/2026
Finance Agent (v2)Market Analysis · higher is betterTest setup not documented as identicalGPT-5.5: 60.3%DeepSeek V4.1 Flash 1017: 62.7%Vals AIAs of 10/20/2026
Legal Research BenchCriminal · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 36.8%DeepSeek V4.1 Flash 1017: 35.1%Vals AIAs of 10/26/2026
Tax Agent BenchNumbers & Calculations · higher is betterTest setup not documented as identicalGPT-5.5: 30%DeepSeek V4.1 Flash 1017: 45.7%Vals AIAs of 10/26/2026
Finance Agent (v2)Precedents · higher is betterTest setup not documented as identicalGPT-5.5: 21.9%DeepSeek V4.1 Flash 1017: 26.5%Vals AIAs of 10/20/2026
Legal Research BenchCriminal · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 81.8%DeepSeek V4.1 Flash 1017: 83.2%Vals AIAs of 10/26/2026
Tax Agent BenchNumbers & Calculations · higher is betterTest setup not documented as identicalGPT-5.5: 76.8%DeepSeek V4.1 Flash 1017: 79.5%Vals AIAs of 10/26/2026
Legal Research BenchFamily · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 13.6%DeepSeek V4.1 Flash 1017: 27.3%Vals AIAs of 10/26/2026
Tax Agent BenchRule & Source Lookup · higher is betterTest setup not documented as identicalGPT-5.5: 23.3%DeepSeek V4.1 Flash 1017: 46.7%Vals AIAs of 10/26/2026
Legal Research BenchFamily · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 70.8%DeepSeek V4.1 Flash 1017: 74.2%Vals AIAs of 10/26/2026
Tax Agent BenchRule & Source Lookup · higher is betterTest setup not documented as identicalGPT-5.5: 44.2%DeepSeek V4.1 Flash 1017: 70.8%Vals AIAs of 10/26/2026
Legal Research BenchHealth · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 66.7%DeepSeek V4.1 Flash 1017: 66.7%Vals AIAs of 10/26/2026
Tax Agent BenchWeighted Pass · higher is betterTest setup not documented as identicalGPT-5.5: 60.5%DeepSeek V4.1 Flash 1017: 74.9%Vals AIAs of 10/26/2026
Legal Research BenchHealth · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 93.6%DeepSeek V4.1 Flash 1017: 96.2%Vals AIAs of 10/26/2026
Legal Research BenchImmigration · All-pass · higher is betterTest setup not documented as identicalGPT-5.5: 36.4%DeepSeek V4.1 Flash 1017: 36.4%Vals AIAs of 10/26/2026
Legal Research BenchImmigration · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 82.1%DeepSeek V4.1 Flash 1017: 79%Vals AIAs of 10/26/2026
Legal Research BenchOverall · Weighted partial credit · higher is betterTest setup not documented as identicalGPT-5.5: 84%DeepSeek V4.1 Flash 1017: 86.3%Vals AIAs of 10/26/2026
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