Head-to-Head Model Comparison

Devstral Small vs GPT-5.1 Codex mini

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
Devstral Small vs GPT-5.1 Codex mini: Benchmarks, Pricing & Speed Comparison

Devstral Small da Mistral AI e GPT-5.1 Codex mini da OpenAI são dois modelos de IA de destaque. O Devstral Small oferece uma janela de contexto de 128K tokens a $0.15/$0.45 por milhão de tokens, enquanto o GPT-5.1 Codex mini oferece 400K tokens de contexto a $0.25/$2.00 por milhão de tokens. Veja abaixo a comparação completa de benchmarks, latência e custos.

Comparação Direta (VS)

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Mistral AI

Devstral Small

IA Agêntica e Uso de Ferramentas

O Devstral Small da Mistral AI é um modelo de IA projetado para fluxos de trabalho agênticos autônomos, chamada de ferramentas e automação, oferecendo janela de contexto de 128K, velocidade de 95 tokens/s, índice de inteligência de 45/100 e

Intelligence Index45 / 100
Input Token:

$0.15 / 1M

Output Token:

$0.45 / 1M

Context Window:

128K tokens

SWE-bench Verified:

42%

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%

Principais Diferenças em Resumo

  • Devstral Small is 3.1x cheaper for API usage (input + output tokens combined).
  • GPT-5.1 Codex mini has a larger context window (400K vs 128K tokens).
  • GPT-5.1 Codex mini is faster at 180 tok/s vs 95 tok/s.
  • GPT-5.1 Codex mini leads on SWE-bench coding (55.5% vs 42.0%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureDevstral SmallGPT-5.1 Codex mini
Intelligence Index
Composite reasoning & knowledge score (0-100)
4547
Provider
Mistral AIOpenAI
Input Price
Cost per million input tokens
$0.15 / 1M$0.25 / 1M
Output Price
Cost per million output tokens
$0.45 / 1M$2.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$0.11 / 1M$0.27 / 1M
Context Window
Maximum input + output tokens
128K tokens~192 A4 pages of text400K tokens~600 A4 pages of text
Max Output Tokens
Per single request
16K128K
Throughput Speed
Tokens generated per second
95 tok/s180 tok/s
SWE-bench Verified
Real-world software engineering
42%55.5%
GPQA Diamond
Graduate-level reasoning
50%66.5%
Cached Input Price
Prompt caching discount per 1M tokens
$0.05 / 1M$0.03 / 1M

Quem vence em cada categoria?

At-a-glance decision framework
Coding
GPT-5.1 Codex mini
+13.5% SWE-bench lead
Cost
Devstral Small
3.1x cheaper monthly runtime
Speed
GPT-5.1 Codex mini
+89% faster generation
Context
GPT-5.1 Codex mini
400K tokens window

Pontuações de Benchmarks Verificadas

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

Devstral SmallGPT-5.1 Codex mini
SWE-bench Verified (Autonomous Coding)

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

42%vs55.5%
GPQA Diamond (Doctorate-Level Science & Math)

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

50%vs66.5%
MMLU-Pro (Multi-task Language Understanding)

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

74%vs79%
LMSYS Chatbot Arena Elo

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

1270ptsvs1320pts
Humanity's Last Exam (Frontier Expert Knowledge)

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

N/Avs9.4%
Terminal-Bench (Agentic Coding & Terminal Use)

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

36.5%vs32%
SciCode (Scientific Computing)

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

N/Avs33%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

N/Avs58%
AIME (Advanced Math Competition)

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

60%vs84.5%
Long-Context Reasoning

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

70%vs69%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

95 tok/s vs180 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
Devstral Small0.42s
GPT-5.1 Codex mini0.72s
Est. End-to-End Response (500 tokens)TTFT + generation time
Devstral Small5.68s
GPT-5.1 Codex mini3.50s

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)
Devstral Small Monthly API Bill
$0.71 / month
$0.15/1M in · $0.45/1M out
GPT-5.1 Codex mini Monthly API Bill
$2.21 / month
$0.25/1M in · $2/1M out
Devstral Small saves approximately $1.51 / month (68%) under this workload.3.1x Savings

Devstral Small · Strengths & Key Advantages

  • Janela de contexto de 128K com limite máximo de saída de 16K tokens (SWE-bench Verified 42% · GPQA Diamond 50%)
  • Taxa de transferência rápida de 95 tokens/segundo com latência inicial (TTFT) de 420 ms
  • Pesos abertos (24B) para auto-hospedagem local ou em nuvem privada via vLLM, SGLang ou Ollama
Considerations & Trade-offs
  • Requer servidores GPU com memória VRAM adequada para execução local em precisão total
  • Em derivações científicas extremas, modelos pesados dedicados exclusivamente ao raciocínio oferecem maior profundidade

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

Token Use & Task Economics

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

MetricDevstral SmallGPT-5.1 Codex mini
Cost per Task
Estimated USD to finish one task
$0.14$0.33
Output Tokens / Task
Tokens generated per task
30K48K
Reasoning Tokens / Task
Thinking tokens burned per task
0K23K

Especificações Técnicas

Architecture, release timeline, capabilities, and modalities.

FeatureDevstral SmallGPT-5.1 Codex mini
Official API Model ID (SDK)devstral-small-latestgpt-5-1-codex-mini
API ProtocolOpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGIOpenAI Responses API & Chat Completions v1
Release Date2025-072025-11
Knowledge CutoffMay 2025October 2024
ArchitectureCode-Optimized Autoregressive TransformerCompact code-specialised reasoning model
Parameters24BConfidential
Enterprise Rate Limits (RPM / TPM)Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Tier (>128K/200K)Flat rate ($0.15/1M in) across full 128K windowFlat rate ($0.25/1M in) across full 400K window
Prompt Cache Policy & TTLCached input at $0.05/1M tokensAutomatic prefix caching at $0.025/1M (no extra cache-write fee)
Computer Use / GUI AgentAPI / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop)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 & SandboxSupported via external Tavily/Exa Search & E2B/Docker Sandbox toolsNative Web Search tool + Hosted Code Interpreter & File Search RAG
Official Fine-Tuning SupportFull Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory)Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)
Multimodal Token BillingText BPE (~4 chars/token)Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)
Quantization & Min GPU VRAMBF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 15 GB VRAM (4-bit Quantized) · 52 GB VRAM (Native BF16)Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API)
Safety & Frontier ClassificationOpen-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma)OpenAI Preparedness Framework Audited & System Card Published
Enterprise Compliance (ZDR/HIPAA/SOC2)100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 ControlSOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Input Modalitiestexttext, vision
Output Modalitiestexttext

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

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

GPT-5.1 Codex mini is more intelligent. It scores 47 compared with 45 on the composite Intelligence Index.

Which model is faster?

GPT-5.1 Codex mini is faster, generating 180 tokens per second compared with 95 tokens per second.

Which model is cheaper to run?

Devstral Small is cheaper at $0.11 per 1M tokens blended, compared with $0.27 (7:2:1 cache:input:output ratio).

Which model has lower latency?

Devstral Small has lower latency, with a time to first token of 0.42s compared with 0.72s.

Which model has a larger context window?

GPT-5.1 Codex mini has a larger context window, supporting 400K tokens compared with 128K tokens.

Veredito

Tanto Devstral Small (Indicado para fluxos de trabalho agênticos autônomos, chamada de ferramentas e automação, arquiteturas RAG corporativas e integração escalável via API.) quanto 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.) entregam excelente desempenho: GPT-5.1 Codex mini lidera em inteligência geral e programação, GPT-5.1 Codex mini oferece geração mais rápida e Devstral Small apresenta o melhor custo-benefício em produção.

Perguntas Frequentes (FAQ)

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

Nas avaliações de inteligência e código, GPT-5.1 Codex mini leva vantagem. Confira os gráficos SWE-bench e GPQA acima para detalhes.

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

O Devstral Small custa $0.15 / $0.45 por 1M de tokens (entrada/saída) e o GPT-5.1 Codex mini custa $0.25 / $2.00. No custo combinado, Devstral Small é mais econômico.

Qual modelo possui maior janela de contexto e velocidade?+

O Devstral Small suporta 128K tokens de contexto contra 400K tokens do GPT-5.1 Codex mini, 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 Mistral AI e OpenAI e benchmarks independentes (2026).