Head-to-Head Model Comparison

Grok Build 0.1 vs Grok 4.20 (Reasoning)

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Revisado por el equipo de investigación de GetInfoUsÚltima revisión: October 2026Política editorial
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AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
Grok Build 0.1 vs Grok 4.20 (Reasoning): Benchmarks, Pricing & Speed Comparison

Grok Build 0.1 de xAI y Grok 4.20 (Reasoning) de xAI compiten directamente en el ecosistema actual de IA. Grok Build 0.1 ofrece una ventana de contexto de 256K tokens a $1.00/$2.00 por millón de tokens (entrada/salida), mientras que Grok 4.20 (Reasoning) ofrece 1M tokens de contexto a $3.00/$15.00 por millón de tokens. Analizamos sus benchmarks, latencia y costos reales.

Comparación Directa (VS)

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xAI

Grok Build 0.1

Líder en Programación e Ingeniería

Grok Build 0.1 de xAI es un modelo de IA diseñado para ingeniería de software autónoma, refactorización de código y depuración avanzada, con ventana de contexto de 256K, velocidad de 120 tokens/s, índice de inteligencia de 65/100 y tarifa d

Intelligence Index65 / 100
Input Token:

$1.00 / 1M

Output Token:

$2.00 / 1M

Context Window:

256K tokens

SWE-bench Verified:

69.8%

xAI

Grok 4.20 (Reasoning)

Motor de Razonamiento Profundo

Grok 4.20 (Reasoning) de xAI es un modelo de IA diseñado para razonamiento lógico profundo, matemáticas avanzadas y resolución científica paso a paso, con ventana de contexto de 1M, velocidad de 95 tokens/s, índice de inteligencia de 68/100

Intelligence Index68 / 100
Input Token:

$3.00 / 1M

Output Token:

$15.00 / 1M

Context Window:

1M tokens

SWE-bench Verified:

68.2%

Diferencias Clave de un Vistazo

  • Grok Build 0.1 is 5.2x cheaper for API usage (input + output tokens combined).
  • Grok 4.20 (Reasoning) has a larger context window (1M vs 256K tokens).
  • Grok Build 0.1 is faster at 120 tok/s vs 95 tok/s.
  • Grok Build 0.1 leads on SWE-bench coding (69.8% vs 68.2%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
CaracterísticaGrok Build 0.1Grok 4.20 (Reasoning)
Intelligence Index
Composite reasoning & knowledge score (0-100)
6568
Provider
xAIxAI
Input Price
Cost per million input tokens
$1.00 / 1M$3.00 / 1M
Output Price
Cost per million output tokens
$2.00 / 1M$15.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$0.57 / 1M$2.63 / 1M
Context Window
Maximum input + output tokens
256K tokens~384 A4 pages of text1M tokens~1,500 A4 pages of text
Max Output Tokens
Per single request
66K66K
Throughput Speed
Tokens generated per second
120 tok/s95 tok/s
SWE-bench Verified
Real-world software engineering
69.8%68.2%
GPQA Diamond
Graduate-level reasoning
68.2%72.8%
Cached Input Price
Prompt caching discount per 1M tokens
$0.25 / 1M$0.75 / 1M

¿Quién gana en cada área?

At-a-glance decision framework
Código
Grok Build 0.1
+1.6% SWE-bench lead
Costo
Grok Build 0.1
5.2x cheaper monthly runtime
Velocidad
Grok Build 0.1
+26% faster generation
Contexto
Grok 4.20 (Reasoning)
1M tokens window

Puntuaciones de Benchmarks Verificadas

Official evaluation metrics verified by independent third-party research labs.

Grok Build 0.1Grok 4.20 (Reasoning)
SWE-bench Verified (Autonomous Coding)

Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.

69.8%vs68.2%
GPQA Diamond (Doctorate-Level Science & Math)

Challenging questions created by domain experts to test complex PhD-level reasoning.

68.2%vs72.8%
MMLU-Pro (Multi-task Language Understanding)

Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.

82.5%vs84.1%
LMSYS Chatbot Arena Elo

Crowdsourced human preference evaluation based on blind, head-to-head model battles.

1375ptsvs1395pts
Humanity's Last Exam (Frontier Expert Knowledge)

Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.

10.5%vs11.8%
Terminal-Bench (Agentic Coding & Terminal Use)

Autonomous multi-step tasks executed inside a real command-line terminal environment.

46.2%vs44.5%
SciCode (Scientific Computing)

Research-grade coding problems drawn from real scientific and numerical workloads.

42%vs41.2%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

68.5%vs66.5%
AIME (Advanced Math Competition)

American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.

82.1%vs86.4%
Long-Context Reasoning

Accuracy when reasoning over very large inputs that fill the model context window.

80.4%vs89.2%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

120 tok/s vs95 tok/s

Latencia y Tiempo de Respuesta

Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.

Time to First Token (TTFT)Lower is better
Grok Build 0.10.55s
Grok 4.20 (Reasoning)0.98s
Est. End-to-End Response (500 tokens)TTFT + generation time
Grok Build 0.14.72s
Grok 4.20 (Reasoning)6.24s

Simulador Interactivo de Costos de Tokens

Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.

100K / day
10K500K1M
30K / day
5K150K300K
50% cached
0% (Cold)50%90% (Warm)
Grok Build 0.1 Monthly API Bill
$3.67 / month
$1/1M in · $2/1M out
Grok 4.20 (Reasoning) Monthly API Bill
$19.13 / month
$3/1M in · $15/1M out
Grok Build 0.1 saves approximately $15.45 / month (81%) under this workload.5.2x Savings

Grok Build 0.1 · Strengths & Key Advantages

  • Ventana de contexto de 256K con hasta 66K tokens de salida máxima (SWE-bench Verified 69.8% · GPQA Diamond 68.2%)
  • Rendimiento ágil de 120 tokens/segundo con latencia inicial (TTFT) de solo 550 ms
  • Economía de API competitiva ($1/$2 por 1M de tokens) con soporte para caché de prompts y salidas JSON estructuradas
Considerations & Trade-offs
  • Modelo propietario en la nube; no permite descargar los pesos para ejecución local sin conexión
  • En demostraciones científicas extremas, los modelos de razonamiento pesado de gama alta ofrecen mayor profundidad

Grok 4.20 (Reasoning) · Strengths & Key Advantages

  • Ventana de contexto de 1M con hasta 66K tokens de salida máxima (SWE-bench Verified 68.2% · GPQA Diamond 72.8%)
  • Rendimiento ágil de 95 tokens/segundo con latencia inicial (TTFT) de solo 980 ms
  • Economía de API competitiva ($3/$15 por 1M de tokens) con soporte para caché de prompts y salidas JSON estructuradas
Considerations & Trade-offs
  • Modelo propietario en la nube; no permite descargar los pesos para ejecución local sin conexión
  • En volúmenes masivos de tokens, se recomienda activar el caché de prompts y Batch API para optimizar costos

Token Use & Task Economics

Estimated cost and token consumption to complete one representative agentic task.

MetricGrok Build 0.1Grok 4.20 (Reasoning)
Cost per Task
Estimated USD to finish one task
$0.95$1.45
Output Tokens / Task
Tokens generated per task
42K45K
Reasoning Tokens / Task
Thinking tokens burned per task
18K28K

Especificaciones Técnicas

Architecture, release timeline, capabilities, and modalities.

CaracterísticaGrok Build 0.1Grok 4.20 (Reasoning)
Official API Model ID (SDK)grok-build-0-1-latestgrok-4-20-reasoning-latest
API ProtocolxAI REST API (OpenAI-Compatible)xAI REST API (OpenAI-Compatible)
Release Date2026-042026-03
Knowledge CutoffJanuary 2026November 2025
ArchitectureCode-Specialized Autoregressive TransformerColossus-Scale Reasoning Sparse MoE
ParametersConfidentialConfidential
Enterprise Rate Limits (RPM / TPM)5,000 – 15,000 RPM (Production Tier) · 800,000 – 2,000,000 TPM5,000 – 15,000 RPM (Production Tier) · 4,000,000 – 10,000,000 TPM
Long-Context Tier (>128K/200K)Flat rate ($1/1M in) across full 256K windowFlat rate ($3/1M in) across full 1000K window
Prompt Cache Policy & TTLCached input at $0.25/1M tokensCached input at $0.75/1M tokens
Computer Use / GUI AgentAPI / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop)API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop)
MCP & Parallel Tool CallingNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON SchemaNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & SandboxReal-time Web & X (Twitter) Search Grounding + Code ExecutionReal-time Web & X (Twitter) Search Grounding + Code Execution
Official Fine-Tuning SupportAPI Prompt Engineering & RAG DistillationAPI Prompt Engineering & RAG Distillation
Multimodal Token BillingText BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)
Quantization & Min GPU VRAMCloud-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 ClassificationxAI Production Safety & Alignment VerifiedxAI Production Safety & Alignment Verified
Enterprise Compliance (ZDR/HIPAA/SOC2)SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise TierSOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Input Modalitiestext, visiontext, vision
Output Modalitiestexttext

Grok Build 0.1 vs Grok 4.20 (Reasoning): Respuestas Rápidas (FAQ)

Which is more intelligent, Grok Build 0.1 or Grok 4.20 (Reasoning)?

Grok 4.20 (Reasoning) is more intelligent. It scores 68 compared with 65 on the composite Intelligence Index.

Which model is faster?

Grok Build 0.1 is faster, generating 120 tokens per second compared with 95 tokens per second.

Which model is cheaper to run?

Grok Build 0.1 is cheaper at $0.57 per 1M tokens blended, compared with $2.63 (7:2:1 cache:input:output ratio).

Which model has lower latency?

Grok Build 0.1 has lower latency, with a time to first token of 0.55s compared with 0.98s.

Which model has a larger context window?

Grok 4.20 (Reasoning) has a larger context window, supporting 1M tokens compared with 256K tokens.

Veredicto

Tanto Grok Build 0.1 (Ideal para ingeniería de software autónoma, refactorización de código y depuración avanzada, sistemas RAG empresariales y automatización mediante API.) como Grok 4.20 (Reasoning) (Ideal para razonamiento lógico profundo, matemáticas avanzadas y resolución científica paso a paso, sistemas RAG empresariales y automatización mediante API.) destacan en producción: Grok 4.20 (Reasoning) lidera en inteligencia general y programación, Grok Build 0.1 ofrece mayor velocidad de generación de tokens y Grok Build 0.1 resulta más rentable para cargas de trabajo API de alto volumen.

Preguntas frecuentes

¿Cuál es mejor para programación y razonamiento, Grok Build 0.1 o Grok 4.20 (Reasoning)?+

En las pruebas de inteligencia compuesta y resolución de código, Grok 4.20 (Reasoning) obtiene la ventaja. Puedes revisar la tabla SWE-bench y GPQA arriba para comparar cada métrica.

¿Cuánto cuesta la API de Grok Build 0.1 frente a Grok 4.20 (Reasoning)?+

Grok Build 0.1 cuesta $1.00 / $2.00 por millón de tokens de entrada/salida, mientras que Grok 4.20 (Reasoning) cuesta $3.00 / $15.00. En costo combinado, Grok Build 0.1 es la opción más económica.

¿Qué modelo tiene mayor ventana de contexto y menor latencia?+

Grok Build 0.1 cuenta con 256K tokens de contexto frente a 1M tokens de Grok 4.20 (Reasoning). En velocidad de inferencia, Grok Build 0.1 ofrece un rendimiento superior.

AI Terminology & Guide
Explore Glossary →

Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.

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: Documentación oficial de API de xAI y xAI, tarjetas de sistema y benchmarks independientes (2026).