GPT Image 2 vs GPT Image 1.5
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (12)
GPT Image 2 by OpenAI and GPT Image 1.5 by OpenAI represent two of the frontier AI models analyzed in our comprehensive 2026 AI benchmark and LLM comparison. In this head-to-head evaluation, we examine API token pricing, context window specifications, inference speed (tokens per second), and empirical reasoning performance. From a pure economic perspective, both models offer identical input token rates. On output generation, costs are matched. In data-heavy architectures requiring extensive repository or document analysis, both models provide an identical memory horizon with 4K tokens. In latency-sensitive production environments, GPT Image 2 leads in tokens-per-second throughput, making it ideal for real-time conversational agents and high-concurrency workflows. Below is the complete empirical head-to-head breakdown across cost, speed, context, and capability matrices.
Changez et Comparez les Modèles
Select any AI models from our verified benchmark database to generate live side-by-side matrices.
GPT Image 2
Image de pointed'OpenAI 2026 image modèle pour prompt-driven génération, editing et design.
$5.00 / 1M
$40.00 / 1M
4.1K tokens
68.5%
GPT Image 1.5
Mise à niveau imageImproved prompt-driven génération, editing et visuel design flux de travail.
$5.00 / 1M
$40.00 / 1M
4.1K tokens
52%
Différences Clés en un Coup d’Œil
- 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%).
| Caractéristique | GPT Image 2 | GPT Image 1.5 |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 59 | 46 |
Provider | OpenAI | OpenAI |
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 text | 4.1K tokens~6 A4 pages of text |
Max Output Tokens Per single request | 4K | 4K |
Throughput Speed Tokens generated per second | 21 tok/s | 17 tok/s |
SWE-bench Verified Real-world software engineering | 68.5% | 52% |
GPQA Diamond Graduate-level reasoning | 72.5% | 66% |
Qui gagne où ?
At-a-glance decision frameworkScores de Benchmarks Vérifiés
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
Latence et Temps de Réponse
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Simulateur Interactif de Coût de Tokens
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
GPT Image 2 · Strengths & Key Advantages
- le plus élevé image qualité dans le GPT image line
- Excellent compositional et lighting control
- fiable multitour image editing
- Excellent à accurate dans-image texte et typography
Considerations & Trade-offs
- Premium tarification par generated image
- génération latence still élevé pour interactif design
GPT Image 1.5 · Strengths & Key Advantages
- meilleur prompt fidelity que GPT image 1
- Cleaner typography et layout control
- Improved consistency à travers multi-image edits
- meilleur à préservant subject identity à travers edits
Considerations & Trade-offs
- Still expensive pour bulk génération
- Occasional sur-smoothing sur detailed textures
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | GPT Image 2 | GPT Image 1.5 |
|---|---|---|
Cost per Task Estimated USD to finish one task | $0.36 | $0.34 |
Output Tokens / Task Tokens generated per task | 9K | 9K |
Reasoning Tokens / Task Thinking tokens burned per task | 0K | 0K |
Spécifications Techniques
Architecture, release timeline, capabilities, and modalities.
| Caractéristique | GPT Image 2 | GPT Image 1.5 |
|---|---|---|
| Official API Model ID (SDK) | gpt-image-2 | gpt-image-1-5 |
| API Protocol | OpenAI Responses API & Chat Completions v1 | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2026-04 | 2025-11 |
| Knowledge Cutoff | March 2026 | October 2025 |
| Architecture | Frontier native multimodal image transformer | Native multimodal image generation transformer |
| Parameters | Confidential | Confidential |
| Enterprise Rate Limits (RPM / TPM) | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM | 10,000 – 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 window | Flat rate ($5/1M in) across full 4K window |
| Prompt Cache Policy & TTL | Automatic prefix caching at $0/1M (no extra cache-write fee) | Automatic prefix caching at $0/1M (no extra cache-write fee) |
| Computer Use / GUI Agent | Supported (Screen coordinate grounding, browser & desktop GUI action loops) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Prompt-based JSON extraction only | Prompt-based JSON extraction only |
| Web Search Grounding & Sandbox | Native Web Search tool + Hosted Code Interpreter & File Search RAG | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) |
| Multimodal Token Billing | Text 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 VRAM | Cloud-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 Classification | OpenAI Preparedness Framework Audited & System Card Published | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text, vision | text, vision |
| Output Modalities | image | image |
GPT Image 2 vs GPT Image 1.5: Réponses Rapides (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.
Verdict
Verdict & Model Selection Recommendation: Choose GPT Image 2 if your priority is High-end visual production and campaign assets. Its performance in demanding tasks justifies its operational token cost. Choose GPT Image 1.5 if your workflow prioritizes Design and marketing workflows needing reliable prompt adherence. For large-scale batch processing or customer-facing conversational interfaces, its balance of speed and economics delivers superior ROI.
Questions fréquentes
How does GPT Image 2 compare to GPT Image 1.5 in API token pricing and cost per token?+
Both GPT Image 2 and GPT Image 1.5 share matched API token pricing at $5.00 per 1M input tokens and $40.00 per 1M output tokens. Because their token economics are identical, your selection should be guided by benchmark latency, memory horizon, and reasoning capabilities rather than operational token fees.
Which model has a larger context window: GPT Image 2 or GPT Image 1.5?+
Both GPT Image 2 and GPT Image 1.5 offer an identical context window of 4K tokens (~3k words). Both architectures provide equal capacity for large document ingestion, multi-file codebases, and extended multi-turn conversation histories.
Which AI model is better for software engineering and coding: GPT Image 2 or GPT Image 1.5?+
GPT Image 2 scores 68.5% on SWE-bench Verified while GPT Image 1.5 scores 52%. For autonomous software engineering and multi-file debugging, GPT Image 2 holds the verified benchmark lead.
What is the difference in reasoning capability and extended thinking between GPT Image 2 and GPT Image 1.5?+
GPT Image 2 is optimized for low-latency direct generation. In contrast, GPT Image 1.5 focuses on standard fast inference.
How does inference speed (tokens per second) compare between GPT Image 2 and GPT Image 1.5?+
GPT Image 2 generates approximately 21 tokens per second, while GPT Image 1.5 delivers 17 tokens per second. In latency-sensitive production environments, GPT Image 2 provides faster time-to-first-token (TTFT) and higher streaming response velocity.
Can you implement a tiered LLM routing setup combining GPT Image 2 and GPT Image 1.5 to optimize costs?+
Yes! Tiered multi-model routing can optimize for latency and accuracy: you can route high-frequency conversational turns and latency-sensitive queries to GPT Image 2, and route deep architectural or complex reasoning queries to GPT Image 2. This balanced routing strategy maximizes system throughput and answer quality.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
Related reading
- GPT Image 1.5 vs Nano Banana Pro: Benchmarks, Pricing & Speed ComparisonComparer
- GPT Image 2 vs Nano Banana 2: Benchmarks, Pricing & Speed ComparisonComparer
- Nano Banana vs GPT Image 1.5: Benchmarks, Pricing & Speed ComparisonComparer
- Aion-3.0 vs Aion-Mini: Benchmarks, Pricing & Speed ComparisonComparer
- Aion-3.0 vs Gemini 3.6 Flash: Benchmarks, Pricing & Speed ComparisonComparer
- Aion-Mini vs Laguna XS 2.1: Benchmarks, Pricing & Speed ComparisonComparer
Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.
Sources: GetInfoUs Independent AI Benchmarks & Official API Specs