Grok-3 vs GPT-4o
Benchmarks, API Token Pricing, Context Window & Speed Comparison
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Grok-3 by xAI and GPT-4o by OpenAI represent two of the frontier AI models analyzed in our comprehensive 2026 AI benchmark and LLM comparison. In this head-to-head evaluation, we examine API token pricing, context window specifications, inference speed (tokens per second), and empirical reasoning performance. From a pure economic perspective, GPT-4o holds a notable pricing advantage for token ingestion. On output generation, GPT-4o is more economical per million generated tokens. In data-heavy architectures requiring extensive repository or document analysis, Grok-3 provides an expanded memory horizon with 1,000K tokens. In latency-sensitive production environments, GPT-4o leads in tokens-per-second throughput, making it ideal for real-time conversational agents and high-concurrency workflows. Below is the complete empirical head-to-head breakdown across cost, speed, context, and capability matrices.
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Grok-3
Rey coloso de fronterade xAI líder modelo de frontera entrenado en 200,000+ Nvidia GPUs, introducing profundo pensamiento deliberation modes, competitivo matemáticas mastery, y nativo codificación agentes.
$3.00 / 1M
$15.00 / 1M
1M tokens
65.2%
GPT-4o
Caballo de batalla omnimodalEl modelo fundacional omnimodal insignia de OpenAI que integra nativamente voz, visión y texto con alta velocidad y fidelidad en llamadas a herramientas.
$2.50 / 1M
$10.00 / 1M
128K tokens
38.8%
Diferencias Clave de un Vistazo
- GPT-4o is 1.3x cheaper for API usage (input + output tokens combined).
- Grok-3 has a larger context window (1M vs 128K tokens).
- GPT-4o is faster at 105 tok/s vs 95 tok/s.
- Grok-3 leads on SWE-bench coding (65.2% vs 38.8%).
| Característica | Grok-3 | GPT-4o |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 54 | 41 |
Provider | xAI | OpenAI |
Input Price Cost per million input tokens | $3.00 / 1M | $2.50 / 1M |
Output Price Cost per million output tokens | $15.00 / 1M | $10.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $2.63 / 1M | $2.38 / 1M |
Context Window Maximum input + output tokens | 1M tokens~1,500 A4 pages of text | 128K tokens~192 A4 pages of text |
Max Output Tokens Per single request | 33K | 16K |
Throughput Speed Tokens generated per second | 95 tok/s | 105 tok/s |
SWE-bench Verified Real-world software engineering | 65.2% | 38.8% |
GPQA Diamond Graduate-level reasoning | 74% | 53.6% |
Cached Input Price Prompt caching discount per 1M tokens | $0.75 / 1M | $1.25 / 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.
Grok-3 · Strengths & Key Advantages
- construido upon el expanded 200K H100/H200 Colossus compute fabric
- Outstanding competitivo programación y AIME mathematics benchmark scores
- 1,000,000 token ventana de contexto con nativo razonamiento effort toggles
Considerations & Trade-offs
- requiere sustancial razonamiento tiempo during extendido pensamiento passes
- mayor empresarial costo por prompt
GPT-4o · Strengths & Key Advantages
- nativo multimodal audio, visión, y en tiempo real voz integración
- rápido inferencia velocidad (105 tokens/sec) y bajo latencia
- confiable estructurado JSON salida y function calling
- Wide empresarial herramienta ecosistema y SDK soporte
Considerations & Trade-offs
- ventana de contexto capped un 128K tokens
- SWE-bench ingeniería de software score menor que especializado razonamiento modelos
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | Grok-3 | GPT-4o |
|---|---|---|
Cost per Task Estimated USD to finish one task | $0.20 | $0.68 |
Output Tokens / Task Tokens generated per task | 24K | 24K |
Reasoning Tokens / Task Thinking tokens burned per task | 15K | 0K |
Especificaciones Técnicas
Architecture, release timeline, capabilities, and modalities.
| Característica | Grok-3 | GPT-4o |
|---|---|---|
| Official API Model ID (SDK) | grok-3-latest | gpt-4o |
| API Protocol | xAI REST API (OpenAI-Compatible) | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2025-02 | 2024-05 |
| Knowledge Cutoff | Late 2024 | October 2023 |
| Architecture | Hybrid Reasoning Deep MoE | Omni-Multimodal Dense |
| Parameters | Confidential | Confidential |
| Enterprise Rate Limits (RPM / TPM) | 5,000 – 15,000 RPM (Production Tier) · 4,000,000 – 10,000,000 TPM | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM |
| Long-Context Tier (>128K/200K) | Flat rate ($3/1M in) across full 1000K window | Flat rate ($2.5/1M in) across full 128K window |
| Prompt Cache Policy & TTL | Cached input at $0.75/1M tokens | Automatic prefix caching at $1.25/1M (no extra cache-write fee) |
| 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 | Real-time Web & X (Twitter) Search Grounding + Code Execution | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | API Prompt Engineering & RAG Distillation | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) |
| Multimodal Token Billing | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) · Audio (~25–32 tokens/sec) |
| Quantization & Min GPU VRAM | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) |
| Safety & Frontier Classification | xAI Production Safety & Alignment Verified | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text, vision | text, vision, audio |
| Output Modalities | text | text, audio |
Grok-3 vs GPT-4o: Respuestas Rápidas (FAQ)
Which is more intelligent, Grok-3 or GPT-4o?
Grok-3 is more intelligent. It scores 54 compared with 41 on the composite Intelligence Index.
Which model is faster?
GPT-4o is faster, generating 105 tokens per second compared with 95 tokens per second.
Which model is cheaper to run?
GPT-4o is cheaper at $2.38 per 1M tokens blended, compared with $2.63 (7:2:1 cache:input:output ratio).
Which model has lower latency?
GPT-4o has lower latency, with a time to first token of 0.41s compared with 1.10s.
Which model has a larger context window?
Grok-3 has a larger context window, supporting 1M tokens compared with 128K tokens.
Veredicto
Verdict & Model Selection Recommendation: Choose Grok-3 if your priority is Frontier algorithmic development, complex technical architecture, and mathematical proofs. Its performance in demanding tasks justifies its operational token cost. Choose GPT-4o if your workflow prioritizes Omni-modal voice applications, conversational agents, and structured enterprise APIs. For large-scale batch processing or customer-facing conversational interfaces, its balance of speed and economics delivers superior ROI.
Preguntas frecuentes
How does Grok-3 compare to GPT-4o in API token pricing and cost per token?+
Grok-3 costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, whereas GPT-4o costs $2.50 input and $10.00 output. Overall, GPT-4o is the more cost-effective model for high-volume API pipelines. Both models support prompt caching discounts of up to 90% for repeated prompt prefixes.
Which model has a larger context window: Grok-3 or GPT-4o?+
Grok-3 supports a context window of 1,000K tokens (~750k words), while GPT-4o supports 128K tokens (~96k words). Therefore, Grok-3 can process more textual data and document context in a single prompt.
Which AI model is better for software engineering and coding: Grok-3 or GPT-4o?+
Grok-3 scores 65.2% on SWE-bench Verified while GPT-4o scores 38.8%. For autonomous software engineering and multi-file debugging, Grok-3 holds the verified benchmark lead.
What is the difference in reasoning capability and extended thinking between Grok-3 and GPT-4o?+
Grok-3 features native chain-of-thought extended thinking mode with configurable reasoning effort. In contrast, GPT-4o focuses on standard fast inference.
How does inference speed (tokens per second) compare between Grok-3 and GPT-4o?+
Grok-3 generates approximately 95 tokens per second, while GPT-4o delivers 105 tokens per second. In latency-sensitive production environments, GPT-4o provides faster time-to-first-token (TTFT) and higher streaming response velocity.
Can you implement a tiered LLM routing setup combining Grok-3 and GPT-4o to optimize costs?+
Yes! High-efficiency architectures route high-frequency routine classification and conversational tasks to GPT-4o to save operational costs, and dynamically escalate complex architectural queries or reasoning tasks to Grok-3. This tiered routing pattern cuts overall API bills by up to 70%.
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: GetInfoUs Independent AI Benchmarks & Official API Specs