Kimi K3.1 scores 55 on Artificial Analysis, on the Pareto line

Kimi K3.1 Pro scored 55 on the Artificial Analysis Intelligence Index, well above the median of 27 for comparable models, according to Artificial Analysis's model analysis. The reasoning model, which accepts text and image input and has a 1M-token context window, is priced at $2.00 per 1M input tokens and $10.00 per 1M output tokens, costing $2.11 per task to evaluate, and it generated 150M tokens during the Intelligence Index run versus a median of 87M. At 73 tokens per second, Kimi K3.1 Pro runs slower than the average of 81 tokens per second.

Kimi K3.1 Pro Intelligence, Performance & Price Analysis Model summary Kimi K3.1 Pro is amongst the leading models in intelligence and reasonably priced when comparing to other models of similar price. It's also slower than average and very verbose. The model supports text and image input, outputs text, and has a 1M tokens context window. Kimi K3.1 Pro scores 55 on the Artificial Analysis Intelligence Index, placing it well above average among comparable models median: 27 . When evaluating the Intelligence Index, it generated 150M tokens, which is very verbose in comparison to the median of 87M. Pricing for Kimi K3.1 Pro is $2.00 per 1M input tokens moderately priced, median: $2.00 and $10.00 per 1M output tokens moderately priced, median: $10.00 . On average, it costs $2.11 per task to evaluate Kimi K3.1 Pro on the Intelligence Index. At 73 tokens per second, Kimi K3.1 Pro is slower than average 81 . | Reasoning | Yes This page shows the reasoning version of this model. A non-reasoning variant may also exist. | |---|---| | Input modality | Supports: text and image | | Output modality | Supports: text | | Context window | 1M ~1500 A4 pages of size 12 Arial font | Metrics are compared against models of the same class: - Non-reasoning models → compared only with other non-reasoning models - Reasoning models → compared across both reasoning and non-reasoning - Open weights models → compared only with other open weights models of the same size class: - Tiny: ≤4B parameters - Small: 4B–40B parameters - Medium: 40B–150B parameters - Large: 150B parameters - Proprietary models → compared across proprietary and open weights models of the same price range, using a blended 3:1 input/output price ratio: - <$0.15 per 1M tokens - $0.15–$1 per 1M tokens - $1 per 1M tokens Intelligence Artificial Analysis Intelligence Index https://artificialanalysis.ai/evaluations/artificial-analysis-intelligence-index Artificial Analysis Intelligence Index by Open Weights / Proprietary Intelligence Index vs. Cost per Task Measures the performance of models on specific capabilities and industries Artificial Analysis Finance & Accounting Index https://artificialanalysis.ai/indexes/finance-and-accounting Evaluations Agentic knowledge work, Elo Knowledge 1 - hallucination rate Agentic SaaS workflows Agentic real-world work tasks, Elo Reasoning & knowledge Professional document reasoning, All-pass Agentic coding & terminal use Long context reasoning SciCode https://artificialanalysis.ai/evaluations/scicode Under review Coding Physics reasoning Agentic scientific research workflows in a terminal Agentic software engineering in open-source repositories Quantitative analysis on spreadsheets & documents Harvey LAB-AA v1.1 https://artificialanalysis.ai/evaluations/harvey-lab-aa Updated Legal agentic work, Hallucination-Gated All-Pass Rate Agentic business operations AA-3D https://artificialanalysis.ai/evaluations/aa-3d New Agentic interactive 3D experiences, Elo Kubernetes incident root-cause analysis MLCR-AA https://artificialanalysis.ai/evaluations/mlcr-aa Updated Medical long context reasoning Visual reasoning Rich, varied, well-crafted language Well-structured, scannable, answer-first Truthful, acknowledges uncertainty, non-sycophantic Use of filler and generic language AA-Briefcase v1.1 AA-Briefcase Elo AA-Omniscience AA-Omniscience Index Intelligence Index Comparisons Intelligence Index vs. Cost per Task Token Use Output Tokens per Intelligence Index Task Cost Cost per Intelligence Index Task Cost to Run Artificial Analysis Intelligence Index Pricing: Cache Hit, Input, and Output Context Window Context Window Speed Measured by Output Speed tokens per second Output Speed Time per Intelligence Index Task Latency Measured by Time seconds to First Token Latency: Time To First Answer Token End-to-End Response Time Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed End-to-End Response Time Frequently Asked Questions Common questions about Kimi K3.1 Pro Kimi K3.1 Pro was released on October 23, 2026. Kimi K3.1 Pro was created by Kimi. Kimi K3.1 Pro scores 55 on the Artificial Analysis Intelligence Index, placing it well above average among other models in a similar price tier median: 27 . Kimi K3.1 Pro generates output at 73.5 tokens per second based on Kimi's API , which is below average compared to other models in a similar price tier median: 81.1 t/s . Kimi K3.1 Pro has a time to first token TTFT of 3.20s based on Kimi's API , which is better than average compared to other models in a similar price tier median: 3.62s . Kimi K3.1 Pro costs $2.00 per 1M input tokens better than average, median: $2.00 and $10.00 per 1M output tokens better than average, median: $10.00 , based on Kimi's API. Kimi K3.1 Pro costs $2.00 per 1M input tokens and $10.00 per 1M output tokens based on Kimi's API . For a blended rate 7:2:1 cache hit/input/output ratio , this is $1.54 per 1M tokens. Pricing may vary by provider. Compare provider pricing https://artificialanalysis.ai/models/kimi-k3-1-pro/providers When evaluated on the Intelligence Index, Kimi K3.1 Pro generated 150M output tokens, which is at the higher end compared to other models in a similar price tier median: 87M . Yes, Kimi K3.1 Pro is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer. Kimi K3.1 Pro supports text and image input. Kimi K3.1 Pro supports text output. Yes, Kimi K3.1 Pro supports image input and can analyze, describe, and answer questions about images. Yes, Kimi K3.1 Pro is multimodal. It can process text and image input and generate text output. Kimi K3.1 Pro has a context window of 1.0M tokens. This determines how much text and conversation history the model can process in a single request. No, Kimi K3.1 Pro is proprietary. The model weights are not publicly available. Kimi K3.1 Pro has 2.8 trillion parameters. Kimi K3.1 Pro achieves a score of 55 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding. Yes, Kimi K3.1 Pro is available via API through 1 provider. Compare API providers https://artificialanalysis.ai/models/kimi-k3-1-pro/providers Kimi K3.1 Pro is available through 1 API provider. Compare providers https://artificialanalysis.ai/models/kimi-k3-1-pro/providers