Head-to-Head Model Comparison

GPT-5.3 Chat vs GPT-5.2 Pro

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Verificato dal team di ricerca di GetInfoUsUltima verifica: October 2026Politica editoriale
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AI CompareAI BenchmarkToken PricingModel CostModel SpecsSWE-bench CodingModel VersusWhich AI ModelLLM Speed & LatencyReasoning ModelsExtended ThinkingPrompt Caching ROI
GPT-5.3 Chat vs GPT-5.2 Pro: Benchmarks, Pricing & Speed Comparison

GPT-5.3 Chat di OpenAI e GPT-5.2 Pro di OpenAI sono due modelli di IA di riferimento. GPT-5.3 Chat offre una finestra di contesto di 128K token a $0.00/$0.00 per milione di token, mentre GPT-5.2 Pro mette a disposizione 400K token di contesto a $17.50/$140.00 per milione di token. Di seguito analizziamo benchmark, latenza e costi.

Confronto Diretto (VS)

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OpenAI

GPT-5.3 Chat

Modello Ammiraglia di Frontiera

GPT-5.3 Chat di OpenAI è un modello di IA progettato per il ragionamento aziendale di frontiera, la programmazione avanzata e i carichi di produzione, con finestra di contesto da 128K, velocità di 138 token/s, indice di intelligenza di 69/1

Intelligence Index69 / 100
Input Token:

$0.00 / 1M

Output Token:

$0.00 / 1M

Context Window:

128K tokens

SWE-bench Verified:

77%

OpenAI

GPT-5.2 Pro

Motore di Ragionamento Profondo

GPT-5.2 Pro di OpenAI è un modello di IA progettato per il ragionamento logico profondo, la matematica avanzata e l’analisi scientifica, con finestra di contesto da 400K, velocità di 50 token/s, indice di intelligenza di 69/100 e tariffa di

Intelligence Index69 / 100
Input Token:

$17.50 / 1M

Output Token:

$140.00 / 1M

Context Window:

400K tokens

SWE-bench Verified:

79.4%

Differenze Chiave a Colpo d’Occhio

  • GPT-5.3 Chat is 1.0x cheaper for API usage (input + output tokens combined).
  • GPT-5.2 Pro has a larger context window (400K vs 128K tokens).
  • GPT-5.3 Chat is faster at 138 tok/s vs 50 tok/s.
  • GPT-5.2 Pro leads on SWE-bench coding (79.4% vs 77.0%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureGPT-5.3 ChatGPT-5.2 Pro
Intelligence Index
Composite reasoning & knowledge score (0-100)
6969
Provider
OpenAIOpenAI
Input Price
Cost per million input tokens
$0.00 / 1M$17.50 / 1M
Output Price
Cost per million output tokens
$0.00 / 1M$140.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$0.00 / 1M$18.73 / 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
138 tok/s50 tok/s
SWE-bench Verified
Real-world software engineering
77%79.4%
GPQA Diamond
Graduate-level reasoning
78%79%
Cached Input Price
Prompt caching discount per 1M tokens
$0.00 / 1M$1.75 / 1M

Chi vince in ogni categoria?

At-a-glance decision framework
Coding
GPT-5.2 Pro
+2.4% SWE-bench lead
Cost
GPT-5.3 Chat
1.0x cheaper monthly runtime
Speed
GPT-5.3 Chat
+176% faster generation
Context
GPT-5.2 Pro
400K tokens window

Punteggi Benchmark Verificati

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

GPT-5.3 ChatGPT-5.2 Pro
SWE-bench Verified (Autonomous Coding)

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

77%vs79.4%
GPQA Diamond (Doctorate-Level Science & Math)

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

78%vs79%
MMLU-Pro (Multi-task Language Understanding)

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

88%vs88.6%
LMSYS Chatbot Arena Elo

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

1416ptsvs1410pts
Humanity's Last Exam (Frontier Expert Knowledge)

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

14.4%vs14.8%
Terminal-Bench (Agentic Coding & Terminal Use)

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

52.5%vs55%
SciCode (Scientific Computing)

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

48%vs50%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

76%vs77.6%
AIME (Advanced Math Competition)

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

93.6%vs94%
Long-Context Reasoning

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

83%vs83.5%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

138 tok/s vs50 tok/s

Latenza e Tempo di Risposta

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-5.3 Chat1.06s
GPT-5.2 Pro4.40s
Est. End-to-End Response (500 tokens)TTFT + generation time
GPT-5.3 Chat4.68s
GPT-5.2 Pro14.40s

Simulatore Interattivo dei Costi Token

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-5.3 Chat Monthly API Bill
$0.00 / month
$0/1M in · $0/1M out
GPT-5.2 Pro Monthly API Bill
$154.88 / month
$17.5/1M in · $140/1M out
GPT-5.3 Chat saves approximately $154.88 / month (100%) under this workload.1.0x Savings

GPT-5.3 Chat · Strengths & Key Advantages

  • Finestra di contesto da 128K con capacità massima di output fino a 16K token (SWE-bench Verified 77% · GPQA Diamond 78%)
  • Throughput elevato di 138 token/secondo con latenza al primo token (TTFT) di soli 1060 ms
  • Economia API competitiva (accesso gratuito a pesi aperti) con supporto per prompt caching, tool calling e output JSON strutturati
Considerations & Trade-offs
  • Modello cloud proprietario chiuso; non consente il download locale dei pesi per l’esecuzione offline
  • Nelle dimostrazioni scientifiche più estreme, i modelli di ragionamento pesante dedicati offrono maggiore profondità

GPT-5.2 Pro · Strengths & Key Advantages

  • Finestra di contesto da 400K con capacità massima di output fino a 128K token (SWE-bench Verified 79.4% · GPQA Diamond 79%)
  • Throughput elevato di 50 token/secondo con latenza al primo token (TTFT) di soli 4400 ms
  • Economia API competitiva ($17.5/$140 per 1M di token) con supporto per prompt caching, tool calling e output JSON strutturati
Considerations & Trade-offs
  • Modello cloud proprietario chiuso; non consente il download locale dei pesi per l’esecuzione offline
  • Per volumi di traffico elevati in produzione si consiglia di attivare il prompt caching e la Batch API

Token Use & Task Economics

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

MetricGPT-5.3 ChatGPT-5.2 Pro
Cost per Task
Estimated USD to finish one task
$2.20$23.24
Output Tokens / Task
Tokens generated per task
56K70K
Reasoning Tokens / Task
Thinking tokens burned per task
31K46K

Specifiche Tecniche

Architecture, release timeline, capabilities, and modalities.

FeatureGPT-5.3 ChatGPT-5.2 Pro
Official API Model ID (SDK)gpt-5-3-chatgpt-5-2-pro
API ProtocolOpenAI Responses API & Chat Completions v1OpenAI Responses API & Chat Completions v1
Release Date2026-032025-12
Knowledge CutoffNovember 2025August 2025
ArchitectureChat-tuned unified reasoning modelMaximum-compute 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)Free across full context window (only KV-cache VRAM scales)Flat rate ($17.5/1M in) across full 400K window
Prompt Cache Policy & TTLAutomatic prefix KV-caching in vLLM / SGLang (0 cost)Automatic prefix caching at $1.75/1M (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 callingNative 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-5.3 Chat vs GPT-5.2 Pro: Risposte Rapide (FAQ)

Which model is faster?

GPT-5.3 Chat is faster, generating 138 tokens per second compared with 50 tokens per second.

Which model is cheaper to run?

GPT-5.3 Chat is cheaper at $0.00 per 1M tokens blended, compared with $18.73 (7:2:1 cache:input:output ratio).

Which model has lower latency?

GPT-5.3 Chat has lower latency, with a time to first token of 1.06s compared with 4.40s.

Which model has a larger context window?

GPT-5.2 Pro has a larger context window, supporting 400K tokens compared with 128K tokens.

Verdetto

Sia GPT-5.3 Chat (Ideale per il ragionamento aziendale di frontiera, la programmazione avanzata e i carichi di produzione, sistemi RAG aziendali e integrazioni API scalabili.) sia GPT-5.2 Pro (Ideale per il ragionamento logico profondo, la matematica avanzata e l’analisi scientifica, sistemi RAG aziendali e integrazioni API scalabili.) eccellono in produzione: GPT-5.3 Chat guida nei benchmark di ragionamento e programmazione, GPT-5.3 Chat garantisce una generazione più rapida e GPT-5.3 Chat offre il miglior rapporto qualità-prezzo per carichi API elevati.

Domande Frequenti (FAQ)

Quale modello è migliore per coding e ragionamento, GPT-5.3 Chat o GPT-5.2 Pro?+

Nell’indice di intelligenza composito e nei benchmark di programmazione prevale GPT-5.3 Chat. Consulta i punteggi SWE-bench e GPQA qui sopra per tutti i dettagli.

Qual è la differenza di prezzo API tra GPT-5.3 Chat e GPT-5.2 Pro?+

GPT-5.3 Chat costa $0.00 / $0.00 per milione di token di input/output, mentre GPT-5.2 Pro costa $17.50 / $140.00. Nel costo combinato, GPT-5.3 Chat risulta più economico.

Quale modello ha la finestra di contesto più ampia e la velocità maggiore?+

GPT-5.3 Chat supporta 128K token di contesto contro 400K token di GPT-5.2 Pro, mentre GPT-5.3 Chat offre una velocità di generazione superiore.

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.

Fonti ufficiali: Documentazione API ufficiale di OpenAI e OpenAI, schede di sistema e benchmark indipendenti (2026).