o3-mini vs Kimi K3
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (4)
Compare o3-mini by OpenAI against Kimi K3 by Moonshot AI across real-world coding, reasoning, token economics, and latency.
Cambia y Compara Cualquier Modelo
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Live comparison: no in-depth editorial review has been published for this pair yet.
o3-mini
Razonamiento de alta eficienciade OpenAI especializado, costo-efficient modelo de razonamiento diseñado para alto-rendimiento STEM, matemáticas competitions, y complejo generación de código con adjustable razonamiento effort.
$1.10 / 1M
$4.40 / 1M
200K tokens
49%
Kimi K3
Razonador abierto de 2.8TEl gigante modelo MoE abierto de 2.8T de Moonshot AI con ventana de contexto de 1 millón de tokens y capacidades revolucionarias en codificación.
$0.00 / 1M
$0.00 / 1M
1.05M tokens
74.5%
Diferencias Clave de un Vistazo
- Kimi K3 is 1.0x cheaper for API usage (input + output tokens combined).
- Kimi K3 has a larger context window (1M vs 200K tokens).
- o3-mini is faster at 85 tok/s vs 58 tok/s.
- Kimi K3 leads on SWE-bench coding (74.5% vs 49.0%).
| Característica | o3-mini | Kimi K3 |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 51 | 93 |
Provider | OpenAI | Moonshot AI |
Input Price Cost per million input tokens | $1.10 / 1M | $0.00 / 1M |
Output Price Cost per million output tokens | $4.40 / 1M | $0.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $1.05 / 1M | $0.00 / 1M |
Context Window Maximum input + output tokens | 200K tokens~300 A4 pages of text | 1.05M tokens~1,573 A4 pages of text |
Max Output Tokens Per single request | 100K | 131K |
Throughput Speed Tokens generated per second | 85 tok/s | 58 tok/s |
SWE-bench Verified Real-world software engineering | 49% | 74.5% |
GPQA Diamond Graduate-level reasoning | 79.7% | 79% |
Cached Input Price Prompt caching discount per 1M tokens | $0.55 / 1M | $0.00 / 1M |
¿Quién gana en cada área?
At-a-glance decision frameworkPuntuaciones de Benchmarks Verificadas
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
Latencia y Tiempo de Respuesta
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Simulador Interactivo de Costos de Tokens
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
o3-mini · Strengths & Key Advantages
- mundo-clase competitivo mathematics y STEM razonamiento (79.7% en GPQA Diamond)
- Configurable razonamiento effort parámetro (bajo, medium, alto)
- masivo 100K token maximum salida generación capacidad
- económico API precios ($1.10 entrada / $4.40 salida por 1M tokens)
Considerations & Trade-offs
- texto-solo modality (no nativo visión o audio procesamiento)
- mayor initial latencia due un internal cadena de pensamiento generación
Kimi K3 · Strengths & Key Advantages
- Largest de pesos abiertos modelo fundacional en existence (2.8T parámetros)
- 1480 LMSYS Chatbot Arena Elo rivaling propietario cerrado de frontera leaders
- completo 1M token ventana de contexto paired con masivo 131K max salida tokens
Considerations & Trade-offs
- Extreme hardware prerequisites (distributed multinodo clúster implementación)
- genera extensive razonamiento traces que demand careful token económico management
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | o3-mini | Kimi K3 |
|---|---|---|
Cost per Task Estimated USD to finish one task | $1.30 | $2.00 |
Output Tokens / Task Tokens generated per task | 45K | 35K |
Reasoning Tokens / Task Thinking tokens burned per task | 25K | 18K |
Especificaciones Técnicas
Architecture, release timeline, capabilities, and modalities.
| Característica | o3-mini | Kimi K3 |
|---|---|---|
| Official API Model ID (SDK) | o3-mini | kimi-k3 |
| API Protocol | OpenAI Responses API & Chat Completions v1 | OpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGI |
| Release Date | 2025-01 | 2026-07 |
| Knowledge Cutoff | October 2023 | March 2026 |
| Architecture | Chain-of-Thought Reasoning Dense | Colossus-Scale Multimodal Sparse Mixture-of-Experts |
| Parameters | Confidential | 2.8T total (MoE) |
| Enterprise Rate Limits (RPM / TPM) | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM | Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud |
| Long-Context Tier (>128K/200K) | Flat rate ($1.1/1M in) across full 200K window | Free across full context window (only KV-cache VRAM scales) |
| Prompt Cache Policy & TTL | Automatic prefix caching at $0.55/1M (no extra cache-write fee) | Automatic prefix KV-caching in vLLM / SGLang (0 cost) |
| Computer Use / GUI Agent | API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Native Web Search tool + Hosted Code Interpreter & File Search RAG | Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools |
| Official Fine-Tuning Support | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) | Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory) |
| Multimodal Token Billing | Text BPE (~4 chars/token) | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) |
| Quantization & Min GPU VRAM | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) | BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 1736 GB VRAM (4-bit Quantized) · 6020 GB VRAM (Native BF16) |
| Safety & Frontier Classification | OpenAI Preparedness Framework Audited & System Card Published | Open-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma) |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | 100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control |
| Input Modalities | text | text, vision |
| Output Modalities | text | text |
o3-mini vs Kimi K3: Respuestas Rápidas (FAQ)
Which is more intelligent, o3-mini or Kimi K3?
Kimi K3 is more intelligent. It scores 93 compared with 51 on the composite Intelligence Index.
Which model is faster?
o3-mini is faster, generating 85 tokens per second compared with 58 tokens per second.
Which model is cheaper to run?
Kimi K3 is cheaper at $0.00 per 1M tokens blended, compared with $1.05 (7:2:1 cache:input:output ratio).
Which model has lower latency?
Kimi K3 has lower latency, with a time to first token of 0.72s compared with 1.40s.
Which model has a larger context window?
Kimi K3 has a larger context window, supporting 1.05M tokens compared with 200K tokens.
Veredicto
Choose o3-mini for competitivo codificación, matemático investigación, algorithmic optimización, y backend lógica, or choose Kimi K3 for auditorías de código de contexto largo, análisis de repositorios completos y trabajo agéntico autónomo.
Preguntas frecuentes
Which is cheaper: o3-mini or Kimi K3?+
o3-mini costs $1.1/1M input and $4.4/1M output tokens, while Kimi K3 costs $0/1M input and $0/1M output tokens.
Which model has a larger context window: o3-mini or Kimi K3?+
o3-mini supports 200K tokens whereas Kimi K3 supports 1.0M tokens.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
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Las puntuaciones de benchmarks, precios por token y límites de tasa evolucionan rápidamente. Verifique siempre las especificaciones actuales en la documentación oficial del proveedor.
Fuentes: OpenAI & Moonshot AI Official Documentation