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Head-to-Head Model Comparison

GPT Image 2 vs GPT Image 1.5

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 Image 2 vs GPT Image 1.5: Benchmarks, Pricing & Speed Comparison

GPT Image 2 di OpenAI e GPT Image 1.5 di OpenAI sono due modelli di IA di riferimento. GPT Image 2 offre una finestra di contesto di 4.1K token a $5.00/$40.00 per milione di token, mentre GPT Image 1.5 mette a disposizione 4.1K token di contesto a $5.00/$40.00 per milione di token. Di seguito analizziamo benchmark, latenza e costi.

Confronto Diretto (VS)

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OpenAI

GPT Image 2

Generazione di Immagini IA

GPT Image 2 di OpenAI è un modello di IA progettato per la generazione di immagini IA ad alta risoluzione, il design visivo e il rendering tipografico, con finestra di contesto da 4K, velocità di 21 token/s, indice di intelligenza di 59/100

Intelligence Index59 / 100
Input Token:

$5.00 / 1M

Output Token:

$40.00 / 1M

Context Window:

4.1K tokens

SWE-bench Verified:

68.5%

OpenAI

GPT Image 1.5

Generazione di Immagini IA

GPT Image 1.5 di OpenAI è un modello di IA progettato per la generazione di immagini IA ad alta risoluzione, il design visivo e il rendering tipografico, con finestra di contesto da 4K, velocità di 17 token/s, indice di intelligenza di 46/1

Intelligence Index46 / 100
Input Token:

$5.00 / 1M

Output Token:

$40.00 / 1M

Context Window:

4.1K tokens

SWE-bench Verified:

52%

Differenze Chiave a Colpo d’Occhio

  • Both models cost the same under this workload — choose on capability, not price.
  • GPT Image 2 is faster at 21 tok/s vs 17 tok/s.
  • GPT Image 2 leads on SWE-bench coding (68.5% vs 52.0%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
FeatureGPT Image 2GPT Image 1.5
Intelligence Index
Composite reasoning & knowledge score (0-100)
5946
Provider
OpenAIOpenAI
Input Price
Cost per million input tokens
$5.00 / 1M$5.00 / 1M
Output Price
Cost per million output tokens
$40.00 / 1M$40.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$5.00 / 1M$5.00 / 1M
Context Window
Maximum input + output tokens
4.1K tokens~6 A4 pages of text4.1K tokens~6 A4 pages of text
Max Output Tokens
Per single request
4K4K
Throughput Speed
Tokens generated per second
21 tok/s17 tok/s
SWE-bench Verified
Real-world software engineering
68.5%52%
GPQA Diamond
Graduate-level reasoning
72.5%66%

Chi vince in ogni categoria?

At-a-glance decision framework
Coding
GPT Image 2
+16.5% SWE-bench lead
Cost
Tied
Identical monthly runtime cost
Speed
GPT Image 2
+24% faster generation
Context
Tied
4.1K tokens window

Punteggi Benchmark Verificati

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

GPT Image 2GPT Image 1.5
SWE-bench Verified (Autonomous Coding)

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

68.5%vs52%
GPQA Diamond (Doctorate-Level Science & Math)

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

72.5%vs66%
MMLU-Pro (Multi-task Language Understanding)

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

84.8%vs78.5%
LMSYS Chatbot Arena Elo

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

1375ptsvs1315pts
Humanity's Last Exam (Frontier Expert Knowledge)

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

12.2%vs9.2%
Terminal-Bench (Agentic Coding & Terminal Use)

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

41.5%vs30.5%
SciCode (Scientific Computing)

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

40%vs32%
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

67%vs56.5%
AIME (Advanced Math Competition)

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

89.6%vs84%
Long-Context Reasoning

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

78%vs68.5%
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

21 tok/s vs17 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 Image 26.20s
GPT Image 1.57.10s
Est. End-to-End Response (500 tokens)TTFT + generation time
GPT Image 230.01s
GPT Image 1.536.51s

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 Image 2 Monthly API Bill
$43.50 / month
$5/1M in · $40/1M out
GPT Image 1.5 Monthly API Bill
$43.50 / month
$5/1M in · $40/1M out
These models cost the same under this workload — no savings either way.Break-even

GPT Image 2 · Strengths & Key Advantages

  • Finestra di contesto da 4K con capacità massima di output fino a 4K token (SWE-bench Verified 68.5% · GPQA Diamond 72.5%)
  • Throughput elevato di 21 token/secondo con latenza al primo token (TTFT) di soli 6200 ms
  • Economia API competitiva ($5/$40 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

GPT Image 1.5 · Strengths & Key Advantages

  • Finestra di contesto da 4K con capacità massima di output fino a 4K token (SWE-bench Verified 52% · GPQA Diamond 66%)
  • Throughput elevato di 17 token/secondo con latenza al primo token (TTFT) di soli 7100 ms
  • Economia API competitiva ($5/$40 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 Image 2GPT Image 1.5
Cost per Task
Estimated USD to finish one task
$0.36$0.34
Output Tokens / Task
Tokens generated per task
9K9K
Reasoning Tokens / Task
Thinking tokens burned per task
0K0K

Specifiche Tecniche

Architecture, release timeline, capabilities, and modalities.

FeatureGPT Image 2GPT Image 1.5
Official API Model ID (SDK)gpt-image-2gpt-image-1-5
API ProtocolOpenAI Responses API & Chat Completions v1OpenAI Responses API & Chat Completions v1
Release Date2026-042025-11
Knowledge CutoffMarch 2026October 2025
ArchitectureFrontier native multimodal image transformerNative multimodal image generation transformer
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 ($5/1M in) across full 4K windowFlat rate ($5/1M in) across full 4K window
Prompt Cache Policy & TTLAutomatic prefix caching at $0/1M (no extra cache-write fee)Automatic prefix caching at $0/1M (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 CallingPrompt-based JSON extraction onlyPrompt-based JSON extraction only
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 Modalitiesimageimage

GPT Image 2 vs GPT Image 1.5: Risposte Rapide (FAQ)

Which is more intelligent, GPT Image 2 or GPT Image 1.5?

GPT Image 2 is more intelligent. It scores 59 compared with 46 on the composite Intelligence Index.

Which model is faster?

GPT Image 2 is faster, generating 21 tokens per second compared with 17 tokens per second.

Which model has lower latency?

GPT Image 2 has lower latency, with a time to first token of 6.20s compared with 7.10s.

Verdetto

Sia GPT Image 2 (Ideale per la generazione di immagini IA ad alta risoluzione, il design visivo e il rendering tipografico, sistemi RAG aziendali e integrazioni API scalabili.) sia GPT Image 1.5 (Ideale per la generazione di immagini IA ad alta risoluzione, il design visivo e il rendering tipografico, sistemi RAG aziendali e integrazioni API scalabili.) eccellono in produzione: GPT Image 2 guida nei benchmark di ragionamento e programmazione, GPT Image 2 garantisce una generazione più rapida e GPT Image 2 offre il miglior rapporto qualità-prezzo per carichi API elevati.

Domande Frequenti (FAQ)

Quale modello è migliore per coding e ragionamento, GPT Image 2 o GPT Image 1.5?+

Nell’indice di intelligenza composito e nei benchmark di programmazione prevale GPT Image 2. Consulta i punteggi SWE-bench e GPQA qui sopra per tutti i dettagli.

Qual è la differenza di prezzo API tra GPT Image 2 e GPT Image 1.5?+

GPT Image 2 costa $5.00 / $40.00 per milione di token di input/output, mentre GPT Image 1.5 costa $5.00 / $40.00. Nel costo combinato, GPT Image 2 risulta più economico.

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

GPT Image 2 supporta 4.1K token di contesto contro 4.1K token di GPT Image 1.5, mentre GPT Image 2 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.

Tokens & PricingContext WindowAI BenchmarksReasoning ModelsTool CallingModel Context Protocol (MCP)

Related reading

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).