Open-source vs proprietary LLMs: DeepSeek vs GPT

GPT-6.1 Sol leads the current AA Intelligence Index, 55 to 32. DeepSeek V4.1 Flash 1017 has the lower illustrated request cost, $0.0042 versus $0.03; output speed is 178.3 versus 79.3 tokens/s.

Updated · 4 sources · Methodology

DimensionWinnerMarginEvidence
SciCode (%)DeepSeek V4.1 Flash 10171.73 ppDeepSeek V4.1 Flash 1017 55.90% / GPT-6.1 Sol 54.17%12
Intelligence IndexGPT-6.1 Sol23 pointsDeepSeek V4.1 Flash 1017 32 / GPT-6.1 Sol 55
Output speed (tokens/s)DeepSeek V4.1 Flash 101799.0 tokens/sDeepSeek V4.1 Flash 1017 178.3 / GPT-6.1 Sol 79.3 tokens/s
Illustrated request costDeepSeek V4.1 Flash 1017$0.02580DeepSeek V4.1 Flash 1017 $0.0042 / GPT-6.1 Sol $0.03

Model capabilities and output performance

ModelSciCode (%)AA v5 Intelligence IndexOutput speed (tokens/s)AA time to first answer token (s)
DeepSeek V4.1 Flash 1017155.9032178.312.41
GPT-6.1 Sol254.175579.3251.44

Prices and request cost

ProviderInput / 1M tokensOutput / 1M tokensContext window (tokens)Max output (tokens)
DeepSeek V4.1 Flash 1017 · Novita AI4$0.3$1.21,048,5764393,2164
GPT-6.1 Sol · OpenAI3$2$101,050,0003128,0003
API documentationNovita AI · Chat API
Cost example: 10,000 input + 1,000 billed output tokens
GPT-6.1 Sol$0.03

Capabilities and serving conditions

DimensionDeepSeek V4.1 Flash 1017GPT-6.1 Sol
Compared modelDeepSeek V4.1 Flash 1017GPT-6.1 Sol
Billing modelInput and billed output tokens are usage-priced, while contract capacity is handled separately.Input and billed output tokens are usage-priced, while contract capacity is handled separately.
Serving and capacityDownloadable weights1Hosted proprietary model2

When each option fits

DeepSeek V4.1 Flash 1017 (Max)

GPT-6.1 Sol (Max)

Methodology and sources

SciCode is AA’s scientific-coding evaluation, reported as a percentage; higher is better. It is separate from the 10,000-input-token performance test and is not an in-editor Cline evaluation. Quality and performance use the configurations shown beside the model names. A current AA v5 Intelligence Index is displayed only where both models have a published value. AA performance uses the 10,000-input-token benchmark at each model’s displayed configuration; reasoning settings vary by model. Output speed is the median output rate. Answer latency measures the first answer token after reasoning, not the initial streamed reasoning chunk. For non-streamed reasoning and non-reasoning models, AA reports the same first-chunk and first-answer event. AA estimates answer latency from initial response and reasoning duration; it is not a separately sampled median. These are reference deployments, not Novita endpoint guarantees. The uncached cost example bills 10,000 input and 1,000 output tokens at each named seller’s tariff; it is not the cost of the AA benchmark. Prices, context and output limits use the cited seller sources.4

  1. Artificial Analysis · DeepSeek V4.1 Flash 1017 (Max) · quality and performance
  2. Artificial Analysis · GPT-6.1 Sol (Max) · quality and performance
  3. OpenAI · GPT-6.1 Sol · API pricing and limits
  4. Novita AI · DeepSeek V4.1 Flash 1017 · endpoint pricing and limits

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