Head-to-Head Model Comparison

GPT-5.1 Codex mini vs GPT-5-Codex

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Revisado pela equipe de pesquisa do GetInfoUsÚltima revisão: October 2026Política editorial
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AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
GPT-5.1 Codex mini vs GPT-5-Codex: Benchmarks, Pricing & Speed Comparison

GPT-5.1 Codex mini da OpenAI e GPT-5-Codex da OpenAI são dois modelos de IA de destaque. O GPT-5.1 Codex mini oferece uma janela de contexto de 400K tokens a $0.25/$2.00 por milhão de tokens, enquanto o GPT-5-Codex oferece 400K tokens de contexto a $1.25/$10.00 por milhão de tokens. Veja abaixo a comparação completa de benchmarks, latência e custos.

Comparação Direta (VS)

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OpenAI

GPT-5.1 Codex mini

Modelo Leve e Econômico

O GPT-5.1 Codex mini da OpenAI é um modelo de IA projetado para máxima economia por token e alto desempenho em escala de produção, oferecendo janela de contexto de 400K, velocidade de 180 tokens/s, índice de inteligência de 47/100 e tarifa

Intelligence Index47 / 100
Input Token:

$0.25 / 1M

Output Token:

$2.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

55.5%

OpenAI

GPT-5-Codex

Líder em Programação e Código

O GPT-5-Codex da OpenAI é um modelo de IA projetado para engenharia de software autônoma, refatoração de código e depuração avançada, oferecendo janela de contexto de 400K, velocidade de 120 tokens/s, índice de inteligência de 57/100 e tari

Intelligence Index57 / 100
Input Token:

$1.25 / 1M

Output Token:

$10.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

74.5%

Principais Diferenças em Resumo

  • GPT-5.1 Codex mini is 5.0x cheaper for API usage (input + output tokens combined).
  • GPT-5.1 Codex mini is faster at 180 tok/s vs 120 tok/s.
  • GPT-5-Codex leads on SWE-bench coding (74.5% vs 55.5%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureGPT-5.1 Codex miniGPT-5-Codex
Intelligence Index
Composite reasoning & knowledge score (0-100)
4757
Provider
OpenAIOpenAI
Input Price
Cost per million input tokens
$0.25 / 1M$1.25 / 1M
Output Price
Cost per million output tokens
$2.00 / 1M$10.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$0.27 / 1M$1.34 / 1M
Context Window
Maximum input + output tokens
400K tokens~600 A4 pages of text400K tokens~600 A4 pages of text
Max Output Tokens
Per single request
128K128K
Throughput Speed
Tokens generated per second
180 tok/s120 tok/s
SWE-bench Verified
Real-world software engineering
55.5%74.5%
GPQA Diamond
Graduate-level reasoning
66.5%80.5%
Cached Input Price
Prompt caching discount per 1M tokens
$0.03 / 1M$0.13 / 1M

Quem vence em cada categoria?

At-a-glance decision framework
Coding
GPT-5-Codex
+19.0% SWE-bench lead
Cost
GPT-5.1 Codex mini
5.0x cheaper monthly runtime
Speed
GPT-5.1 Codex mini
+50% faster generation
Context
Tied
400K tokens window

Pontuações de Benchmarks Verificadas

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

GPT-5.1 Codex miniGPT-5-Codex
SWE-bench Verified (Autonomous Coding)

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

55.5%vs74.5%
GPQA Diamond (Doctorate-Level Science & Math)

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

66.5%vs80.5%
MMLU-Pro (Multi-task Language Understanding)

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

79%vs85.5%
LMSYS Chatbot Arena Elo

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

1320ptsvs1360pts
Humanity's Last Exam (Frontier Expert Knowledge)

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

9.4%vs12%
Terminal-Bench (Agentic Coding & Terminal Use)

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

32%vs50%
SciCode (Scientific Computing)

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

33%vs45.5%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

58%vs73.5%
AIME (Advanced Math Competition)

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

84.5%vs90.5%
Long-Context Reasoning

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

69%vs77%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

180 tok/s vs120 tok/s

Latência e Tempo de Resposta

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
GPT-5.1 Codex mini0.72s
GPT-5-Codex1.25s
Est. End-to-End Response (500 tokens)TTFT + generation time
GPT-5.1 Codex mini3.50s
GPT-5-Codex5.42s

Simulador Interativo de Custo 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)
GPT-5.1 Codex mini Monthly API Bill
$2.21 / month
$0.25/1M in · $2/1M out
GPT-5-Codex Monthly API Bill
$11.06 / month
$1.25/1M in · $10/1M out
GPT-5.1 Codex mini saves approximately $8.85 / month (80%) under this workload.5.0x Savings

GPT-5.1 Codex mini · Strengths & Key Advantages

  • Janela de contexto de 400K com limite máximo de saída de 128K tokens (SWE-bench Verified 55.5% · GPQA Diamond 66.5%)
  • Taxa de transferência rápida de 180 tokens/segundo com latência inicial (TTFT) de 720 ms
  • Economia de API competitiva ($0.25/$2 por 1M de tokens) com suporte a cache de prompts e saídas JSON estruturadas
Considerations & Trade-offs
  • Modelo proprietário em nuvem; não permite download dos pesos para execução local offline
  • Em derivações científicas extremas, modelos pesados dedicados exclusivamente ao raciocínio oferecem maior profundidade

GPT-5-Codex · Strengths & Key Advantages

  • Janela de contexto de 400K com limite máximo de saída de 128K tokens (SWE-bench Verified 74.5% · GPQA Diamond 80.5%)
  • Taxa de transferência rápida de 120 tokens/segundo com latência inicial (TTFT) de 1250 ms
  • Economia de API competitiva ($1.25/$10 por 1M de tokens) com suporte a cache de prompts e saídas JSON estruturadas
Considerations & Trade-offs
  • Modelo proprietário em nuvem; não permite download dos pesos para execução local offline
  • Em derivações científicas extremas, modelos pesados dedicados exclusivamente ao raciocínio oferecem maior profundidade

Token Use & Task Economics

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

MetricGPT-5.1 Codex miniGPT-5-Codex
Cost per Task
Estimated USD to finish one task
$0.33$1.60
Output Tokens / Task
Tokens generated per task
48K58K
Reasoning Tokens / Task
Thinking tokens burned per task
23K32K

Especificações Técnicas

Architecture, release timeline, capabilities, and modalities.

FeatureGPT-5.1 Codex miniGPT-5-Codex
Official API Model ID (SDK)gpt-5-1-codex-minigpt-5-codex
API ProtocolOpenAI Responses API & Chat Completions v1OpenAI Responses API & Chat Completions v1
Release Date2025-112025-09
Knowledge CutoffOctober 2024September 2024
ArchitectureCompact code-specialised reasoning modelCode-specialised unified reasoning model
ParametersConfidentialConfidential
Enterprise Rate Limits (RPM / TPM)10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Tier (>128K/200K)Flat rate ($0.25/1M in) across full 400K windowFlat rate ($1.25/1M in) across full 400K window
Prompt Cache Policy & TTLAutomatic prefix caching at $0.025/1M (no extra cache-write fee)Automatic prefix caching at $0.125/1M (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 tool + Hosted Code Interpreter & File Search RAGNative Web Search tool + Hosted Code Interpreter & File Search RAG
Official Fine-Tuning SupportSupervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)Supervised 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 ClassificationOpenAI Preparedness Framework Audited & System Card PublishedOpenAI 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

GPT-5.1 Codex mini vs GPT-5-Codex: Respostas Rápidas (FAQ)

Which is more intelligent, GPT-5.1 Codex mini or GPT-5-Codex?

GPT-5-Codex is more intelligent. It scores 57 compared with 47 on the composite Intelligence Index.

Which model is faster?

GPT-5.1 Codex mini is faster, generating 180 tokens per second compared with 120 tokens per second.

Which model is cheaper to run?

GPT-5.1 Codex mini is cheaper at $0.27 per 1M tokens blended, compared with $1.34 (7:2:1 cache:input:output ratio).

Which model has lower latency?

GPT-5.1 Codex mini has lower latency, with a time to first token of 0.72s compared with 1.25s.

Veredito

Tanto GPT-5.1 Codex mini (Indicado para máxima economia por token e alto desempenho em escala de produção, arquiteturas RAG corporativas e integração escalável via API.) quanto GPT-5-Codex (Indicado para engenharia de software autônoma, refatoração de código e depuração avançada, arquiteturas RAG corporativas e integração escalável via API.) entregam excelente desempenho: GPT-5-Codex lidera em inteligência geral e programação, GPT-5.1 Codex mini oferece geração mais rápida e GPT-5.1 Codex mini apresenta o melhor custo-benefício em produção.

Perguntas Frequentes (FAQ)

Qual é melhor para programação e raciocínio, GPT-5.1 Codex mini ou GPT-5-Codex?+

Nas avaliações de inteligência e código, GPT-5-Codex leva vantagem. Confira os gráficos SWE-bench e GPQA acima para detalhes.

Qual modelo tem a API mais barata, GPT-5.1 Codex mini ou GPT-5-Codex?+

O GPT-5.1 Codex mini custa $0.25 / $2.00 por 1M de tokens (entrada/saída) e o GPT-5-Codex custa $1.25 / $10.00. No custo combinado, GPT-5.1 Codex mini é mais econômico.

Qual modelo possui maior janela de contexto e velocidade?+

O GPT-5.1 Codex mini suporta 400K tokens de contexto contra 400K tokens do GPT-5-Codex, enquanto GPT-5.1 Codex mini entrega maior velocidade de geração.

AI Terminology & Guide
Explore Glossary →

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

Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.

Fontes oficiais: Documentação oficial de API da OpenAI e OpenAI e benchmarks independentes (2026).