Head-to-Head Model Comparison

Claude Opus 4.8 vs GPT-5.5 Instant

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Revisado por el equipo de investigación de GetInfoUsÚltima revisión: October 2026Política editorial
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Related topics (12)
AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
Claude Opus 4.8 vs GPT-5.5 Instant: Benchmarks, Pricing & Speed Comparison

Claude Opus 4.8 de Anthropic y GPT-5.5 Instant de OpenAI compiten directamente en el ecosistema actual de IA. Claude Opus 4.8 ofrece una ventana de contexto de 1M tokens a $5.00/$25.00 por millón de tokens (entrada/salida), mientras que GPT-5.5 Instant ofrece 400K tokens de contexto a $0.75/$6.00 por millón de tokens. Analizamos sus benchmarks, latencia y costos reales.

Comparación Directa (VS)

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Anthropic

Claude Opus 4.8

Modelo Insignia de Frontera

Claude Opus 4.8 de Anthropic es un modelo de IA diseñado para razonamiento empresarial de frontera, programación avanzada y flujos de producción, con ventana de contexto de 1M, velocidad de 64 tokens/s, índice de inteligencia de 67/100 y ta

Intelligence Index67 / 100
Input Token:

$5.00 / 1M

Output Token:

$25.00 / 1M

Context Window:

1M tokens

SWE-bench Verified:

80.8%

OpenAI

GPT-5.5 Instant

Modelo Ligero y Económico

GPT-5.5 Instant de OpenAI es un modelo de IA diseñado para máxima eficiencia de costos por token y alta velocidad en producción, con ventana de contexto de 400K, velocidad de 168 tokens/s, índice de inteligencia de 65/100 y tarifa de $0.75/

Intelligence Index65 / 100
Input Token:

$0.75 / 1M

Output Token:

$6.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

74.5%

Diferencias Clave de un Vistazo

  • GPT-5.5 Instant is 4.6x cheaper for API usage (input + output tokens combined).
  • Claude Opus 4.8 has a larger context window (1M vs 400K tokens).
  • GPT-5.5 Instant is faster at 168 tok/s vs 64 tok/s.
  • Claude Opus 4.8 leads on SWE-bench coding (80.8% vs 74.5%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
CaracterísticaClaude Opus 4.8GPT-5.5 Instant
Intelligence Index
Composite reasoning & knowledge score (0-100)
6765
Provider
AnthropicOpenAI
Input Price
Cost per million input tokens
$5.00 / 1M$0.75 / 1M
Output Price
Cost per million output tokens
$25.00 / 1M$6.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$3.85 / 1M$0.80 / 1M
Context Window
Maximum input + output tokens
1M tokens~1,500 A4 pages of text400K tokens~600 A4 pages of text
Max Output Tokens
Per single request
128K128K
Throughput Speed
Tokens generated per second
64 tok/s168 tok/s
SWE-bench Verified
Real-world software engineering
80.8%74.5%
GPQA Diamond
Graduate-level reasoning
78.9%75%
Cached Input Price
Prompt caching discount per 1M tokens
$0.50 / 1M$0.07 / 1M

¿Quién gana en cada área?

At-a-glance decision framework
Código
Claude Opus 4.8
+6.3% SWE-bench lead
Costo
GPT-5.5 Instant
4.6x cheaper monthly runtime
Velocidad
GPT-5.5 Instant
+163% faster generation
Contexto
Claude Opus 4.8
1M tokens window

Puntuaciones de Benchmarks Verificadas

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

Claude Opus 4.8GPT-5.5 Instant
SWE-bench Verified (Autonomous Coding)

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

80.8%vs74.5%
GPQA Diamond (Doctorate-Level Science & Math)

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

78.9%vs75%
MMLU-Pro (Multi-task Language Understanding)

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

89.6%vs87.2%
LMSYS Chatbot Arena Elo

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

1420ptsvs1396pts
Humanity's Last Exam (Frontier Expert Knowledge)

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

N/Avs13.6%
Terminal-Bench (Agentic Coding & Terminal Use)

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

54.2%vs49%
SciCode (Scientific Computing)

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

N/Avs45.5%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

N/Avs73.5%
AIME (Advanced Math Competition)

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

N/Avs92.4%
Long-Context Reasoning

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

N/Avs81.5%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

64 tok/s vs168 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
Claude Opus 4.81.65s
GPT-5.5 Instant0.78s
Est. End-to-End Response (500 tokens)TTFT + generation time
Claude Opus 4.89.46s
GPT-5.5 Instant3.76s

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)
Claude Opus 4.8 Monthly API Bill
$30.75 / month
$5/1M in · $25/1M out
GPT-5.5 Instant Monthly API Bill
$6.64 / month
$0.75/1M in · $6/1M out
GPT-5.5 Instant saves approximately $24.11 / month (78%) under this workload.4.6x Savings

Claude Opus 4.8 · Strengths & Key Advantages

  • Ventana de contexto de 1M con hasta 128K tokens de salida máxima (SWE-bench Verified 80.8% · GPQA Diamond 78.9%)
  • Rendimiento ágil de 64 tokens/segundo con latencia inicial (TTFT) de solo 1650 ms
  • Economía de API competitiva ($5/$25 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

GPT-5.5 Instant · Strengths & Key Advantages

  • Ventana de contexto de 400K con hasta 128K tokens de salida máxima (SWE-bench Verified 74.5% · GPQA Diamond 75%)
  • Rendimiento ágil de 168 tokens/segundo con latencia inicial (TTFT) de solo 780 ms
  • Economía de API competitiva ($0.75/$6 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

Token Use & Task Economics

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

MetricClaude Opus 4.8GPT-5.5 Instant
Cost per Task
Estimated USD to finish one task
$5.49$0.95
Output Tokens / Task
Tokens generated per task
72K52K
Reasoning Tokens / Task
Thinking tokens burned per task
37K26K

Especificaciones Técnicas

Architecture, release timeline, capabilities, and modalities.

CaracterísticaClaude Opus 4.8GPT-5.5 Instant
Official API Model ID (SDK)claude-opus-4-8-20260501gpt-5-5-instant
API ProtocolAnthropic Messages API + AWS Bedrock + Vertex AIOpenAI Responses API & Chat Completions v1
Release Date2026-052026-05
Knowledge CutoffMarch 2026December 2025
ArchitectureFrontier Hybrid Cognitive ArchitectureLow-latency compact reasoning model
ParametersConfidentialConfidential
Enterprise Rate Limits (RPM / TPM)4,000 – 10,000 RPM (Tier 4 + Priority Tier) · 4,000,000 – 10,000,000 TPM10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Tier (>128K/200K)Standard rate up to 200K tokens; 2x input/output tier above 200K tokensFlat rate ($0.75/1M in) across full 400K window
Prompt Cache Policy & TTL$0.5/1M cached read (90% off); 5-min default & 1-hour extended TTLAutomatic prefix caching at $0.075/1M (no extra cache-write fee)
Computer Use / GUI AgentSupported (Screen coordinate grounding, browser & desktop GUI action loops)Supported (Screen coordinate grounding, browser & desktop GUI action loops)
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 & SandboxNative Web Search Citations + Code Execution Tool + MCP ConnectorsNative Web Search tool + Hosted Code Interpreter & File Search RAG
Official Fine-Tuning SupportCustom Model Tuning via Amazon Bedrock & Prompt DistillationSupervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)
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 ClassificationAnthropic RSP ASL-2 / ASL-3 Constitutional Safety EvaluatedOpenAI Preparedness Framework Audited & System Card Published
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

Claude Opus 4.8 vs GPT-5.5 Instant: Respuestas Rápidas (FAQ)

Which is more intelligent, Claude Opus 4.8 or GPT-5.5 Instant?

Claude Opus 4.8 is more intelligent. It scores 67 compared with 65 on the composite Intelligence Index.

Which model is faster?

GPT-5.5 Instant is faster, generating 168 tokens per second compared with 64 tokens per second.

Which model is cheaper to run?

GPT-5.5 Instant is cheaper at $0.80 per 1M tokens blended, compared with $3.85 (7:2:1 cache:input:output ratio).

Which model has lower latency?

GPT-5.5 Instant has lower latency, with a time to first token of 0.78s compared with 1.65s.

Which model has a larger context window?

Claude Opus 4.8 has a larger context window, supporting 1M tokens compared with 400K tokens.

Veredicto

Tanto Claude Opus 4.8 (Ideal para razonamiento empresarial de frontera, programación avanzada y flujos de producción, sistemas RAG empresariales y automatización mediante API.) como GPT-5.5 Instant (Ideal para máxima eficiencia de costos por token y alta velocidad en producción, sistemas RAG empresariales y automatización mediante API.) destacan en producción: Claude Opus 4.8 lidera en inteligencia general y programación, GPT-5.5 Instant ofrece mayor velocidad de generación de tokens y GPT-5.5 Instant resulta más rentable para cargas de trabajo API de alto volumen.

Preguntas frecuentes

¿Cuál es mejor para programación y razonamiento, Claude Opus 4.8 o GPT-5.5 Instant?+

En las pruebas de inteligencia compuesta y resolución de código, Claude Opus 4.8 obtiene la ventaja. Puedes revisar la tabla SWE-bench y GPQA arriba para comparar cada métrica.

¿Cuánto cuesta la API de Claude Opus 4.8 frente a GPT-5.5 Instant?+

Claude Opus 4.8 cuesta $5.00 / $25.00 por millón de tokens de entrada/salida, mientras que GPT-5.5 Instant cuesta $0.75 / $6.00. En costo combinado, GPT-5.5 Instant es la opción más económica.

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

Claude Opus 4.8 cuenta con 1M tokens de contexto frente a 400K tokens de GPT-5.5 Instant. En velocidad de inferencia, GPT-5.5 Instant 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 Anthropic y OpenAI, tarjetas de sistema y benchmarks independientes (2026).