Qwen vs Kimi: benchmarks and API costs

Kimi K3.1 Pro leads SciCode at 60.76% versus 50.58%. Qwen3.8-Flash-Next has the lower illustrated request cost at $0.0025; the other model costs $0.03.

Updated · 6 sources · Methodology

DimensionWinnerMarginEvidence
SciCode (%)Kimi K3.1 Pro10.18 ppQwen3.8-Flash-Next 50.58% / Kimi K3.1 Pro 60.76%12
Output speed (tokens/s)Qwen3.8-Flash-Next19.7 tokens/sQwen3.8-Flash-Next 55.4 / Kimi K3.1 Pro 35.7 tokens/s
AA time to first answer token (s)Qwen3.8-Flash-Next20.73 sQwen3.8-Flash-Next 38.17 s / Kimi K3.1 Pro 58.90 s
Estimated request costQwen3.8-Flash-Next$0.027510K + 1K: Qwen3.8-Flash-Next $0.0025 / Kimi K3.1 Pro $0.0343

AA coding quality benchmarks

MetricQwen3.8-Flash-NextKimi K3.1 Pro
SciCode (%)50.58160.762

Performance

MetricQwen3.8-Flash-NextKimi K3.1 Pro
Output speed (tokens/s)55.435.7
AA time to first answer token (s)38.1758.90

Prices and request cost

MetricQwen3.8-Flash-Next · LyceumKimi K3.1 Pro · Novita AI
Input / 1M tokens$0.23$24
Output / 1M tokens$0.53$104
Context window (tokens)262,14451,048,5764
Max output (tokens)131,07261,048,5764
API documentationNovita AI · Chat API
Cost example: 10,000 input + 1,000 billed output tokens
Qwen3.8-Flash-Next$0.0025

Coding, reasoning, context and cost

Coding benchmark

  • AA SciCode: Qwen3.8-Flash-Next 50.58% / Kimi K3.1 Pro 60.76%.12

Reasoning benchmark

  • The configured AA first-answer wait is 38.17 s for Qwen3.8-Flash-Next and 58.90 s for Kimi K3.1 Pro.12

Context window (tokens)

  • For input fit, Kimi’s Novita endpoint offers 1,048,576 tokens and Qwen’s Lyceum endpoint 262,144.12

Estimated request cost

  • The same uncached token quantities cost $0.0025 for Qwen3.8-Flash-Next and $0.03 for Kimi K3.1 Pro.4312

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.

  1. Artificial Analysis · Qwen3.8-Flash-Next · quality and performance
  2. Artificial Analysis · Kimi K3.1 Pro · quality and performance
  3. Lyceum · Qwen3.8-Flash-Next · API pricing and limits
  4. Novita AI · Kimi K3.1 Pro · endpoint pricing and limits
  5. Lyceum · Qwen3.8-Flash-Next · native context specification
  6. Lyceum · serverless request limits

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