OpenAI
gpt-5.4-image-2
Released 
April 2026

OpenAI
gpt-5.4-image-2

Combines GPT-5.4 reasoning with GPT Image 2 generation to produce text-accurate, production-grade visuals in one API call.

Modality:
Text
Image
model ID
openai/gpt-5.4-image-2

Output Speed

N/A
tok/s

Intelligence Index

N/A
/ 100

Context Window

262144
tokens

Input price

48
Anytoken

Output price

90
Anytoken
GPT-5.4 Image 2: Reasoned Prompting Meets Text-Accurate Image Generation GPT-5.4 Image 2 is OpenAI's composite multimodal endpoint that pairs the GPT-5.4 language model with the GPT Image 2 generation tool through the Responses API. Rather than sending raw prompts to an image model, GPT-5.4 interprets, plans, and refines the request before GPT Image 2 renders it. The result is markedly stronger prompt adherence and near-perfect in-image text rendering. It suits teams generating marketing assets, UI mockups, infographics, and multilingual labels where legible text and instruction-following matter more than raw generation speed. Start generating with GPT-5.4 Image 2 via the AnyAPI.ai API

Performance

Why Reasoned Prompting Changes Image Output Quality

GPT-5.4 Image 2 excels at instruction-heavy, text-in-image generation. Because GPT-5.4 reasons about the request before invoking the image tool, prompts with multiple constraints and legible typography resolve far more reliably than with a bare image model. Independent testing shows GPT Image 2 rendering text at roughly 99% character-level accuracy across Latin and non-Latin scripts. For production teams, this means posters, packaging, UI mockups, and localized graphics can be generated in a single pass rather than corrected in post. The trade-off is latency: reasoning plus rendering pushes median generation into the low-20-second range.

Benchmarks

Independent Image Benchmark Signals

On OpenRouter's independent image benchmark, GPT-5.4 Image 2 records a median generation time of roughly 20.5 seconds, slightly slower than the standalone GPT Image 2 endpoint at about 16.3 seconds, reflecting the added GPT-5.4 reasoning step. Independent testing of the underlying GPT Image 2 model reports near-99% character-level text accuracy across Latin, CJK, Hindi, and Bengali scripts, plus native 2K output and up to eight coherent images per prompt. These figures position the model for quality-first, text-heavy visual workloads rather than high-throughput bulk generation, where faster diffusion models remain competitive.

Output Speed

N/A
tok/s

Intelligence Index

N/A
/ 100

MMLU

Broad world knowledge and problem-solving
0
%

GPQA

PhD-level scientific reasoning across physics, biology, chemistry.
0
%

HLE

Adherence to multi-step structured instructions.
0
%

LiveCodeBench

Tool-calling reliability in long agentic loops.
0
%

Technical Specifications

What the model supports

This is a composite endpoint: GPT-5.4 handles prompting and reasoning, then calls the GPT Image 2 generation tool. It accepts text, images, and files such as PDFs, and returns both images and text, with up to 16 reference images per request. The most production-relevant detail is that this specific image endpoint does not accept function-calling tools, so agentic tool orchestration must run through the standard GPT-5.4 endpoint. Its 272,000-token context is smaller than base GPT-5.4's 1.05M window, which matters for very long multimodal briefs.
Verified Specifications — 
gpt-5.4-image-2
Input modalities
Text
Image
output modalities
Text
Image
Context window
262144
 tokens
Maximum output tokens
262144
Reasoning
Yes
Knowledge cutoff
April 2026
Pricing (standard)
48
 AnyTokens in
 / 
90
 AnyTokens out

Comparison

GPT-5.4 Image 2 vs GPT Image 2: When Is the Reasoning Layer Worth It?

Both models share the same underlying image generator, so raw rendering quality, native 2K resolution, and text accuracy are effectively identical. The difference is orchestration. GPT-5.4 Image 2 routes the request through GPT-5.4 first, which reasons about intent, refines the prompt, and can move between text reasoning and image generation in one interaction. The standalone gpt-image-2 endpoint calls the Images API directly with no LLM overhead. The practical decision is whether you want automated prompt improvement and conversational multimodal flow, or the leanest, fastest path to a rendered image.

Dimension
gpt-5.4-image-2
gpt-5-image
Context window
262144
tokens
400000
tokens
Output speed
N/A
tok/s
N/A
tok/s
Intelligence Index
N/A
0
Input pricing
48
AnyToken
60
AnyToken
Output pricing
90
AnyToken
60
AnyToken
Knowledge cutoff
April 2026
August 2025

Choose GPT-5.4 Image 2 when prompts are complex, ambiguous, or benefit from reasoning — multi-constraint briefs, iterative conversational editing, or workflows mixing analysis and generation. Choose standalone GPT Image 2 when you already have well-specified prompts, need the lowest latency, and want to avoid paying for language-model tokens on every generation. Independent benchmarks show the standalone endpoint generating faster, so high-volume batch pipelines with fixed prompts generally favor it.

Limitations & Trade-offs

Where gpt-5.4-image-2 falls short

1
Higher latency from the reasoning step. Because GPT-5.4 reasons before invoking the image tool, independent benchmarks show median generation near 20.5 seconds versus roughly 16.3 seconds for standalone GPT Image 2. For interactive UIs or bulk pipelines where every second compounds, the added reasoning overhead is a real cost. Workloads with pre-optimized prompts often see little quality benefit from the extra step and should consider the direct image endpoint.
2
No function calling on this endpoint. This composite image endpoint does not accept tools, so function calling is unavailable here. Agentic architectures that need the model to call external functions, retrieve data, or orchestrate multi-tool workflows alongside image generation must route those steps through the standard GPT-5.4 text endpoint. Teams building tool-using agents cannot rely on this single endpoint for both generation and orchestration.
3
Smaller context window than base GPT-5.4. This endpoint exposes a 272,000-token context, well below base GPT-5.4's 1.05M-token window. Long multimodal briefs, extensive brand guidelines, or large document context feeding a single generation request may exceed the available window. For very long-context grounding before generation, pre-summarize with the larger GPT-5.4 endpoint and pass a condensed brief here.
4
Higher per-output cost than raw image models. Combined language-model token billing plus separate image-output rates make GPT-5.4 Image 2 more expensive per finished asset than lean diffusion-based generators. For A/B testing, e-commerce catalogs, or high-volume batch generation with simple prompts, that premium is hard to justify. Reserve it for cases where reasoning-driven prompt adherence and text accuracy directly improve the output.

Best-Fit Workloads

Where this model earns its place

01

Text-in-image marketing assets


Posters, packaging, and social graphics that must contain readable headlines, fine print, and brand names benefit directly from GPT Image 2's near-99% character-level text accuracy. GPT-5.4's reasoning layer helps enforce layout and copy constraints in a single pass, reducing manual correction. This is the model's strongest fit for production marketing pipelines.

02

UI and product mockups


Generating interface mockups with real, legible labels, buttons, and menu text is a standout use case. The reasoning step interprets multi-element layout instructions before rendering, and native 2K output produces assets usable in design reviews. Designers can iterate conversationally, refining a mockup across turns rather than restarting from scratch.

03
Multilingual and localized visuals


Because the underlying model renders text accurately across Latin and non-Latin scripts including CJK, Hindi, and Bengali, it fits localized ad campaigns, multilingual labels, and educational materials. GPT-5.4's multilingual understanding helps interpret localization intent, generating region-specific graphics with correct in-image typography in one workflow.

04

Conversational infographics and diagrams


Infographics with legible data annotations and educational diagrams benefit from reasoning before generation, since these outputs require correct labels, ordering, and multi-constraint composition. The endpoint's ability to accept reference images and PDFs as input supports grounding a diagram in existing source material, then producing a coherent visual explanation.

Pricing in anytokens via AnyAPI
Input
48
Output
90
Cache write
Cache read

Integration

Access gpt-5.4-image-2 via AnyAPI.ai

Access gpt-5.4-image-2 through AnyAPI.ai using a unified API built for multi-model AI applications. Integrate gpt-5.4-image-2 without maintaining a separate provider-specific connection, and keep the flexibility to test, switch, or combine models as your application requirements evolve.

01

One API integration

Access gpt-5.4-image-2 and other AI models through the same API workflow instead of maintaining separate integrations for every provider.

02

Easy model switching

Test gpt-5.4-image-2 against alternative models or switch models as your performance, capability, or cost requirements change without rebuilding your application around another provider API.

03

Flexible for production

Use gpt-5.4-image-2 from experimentation through production while keeping your AI stack flexible as workloads, traffic, and model requirements evolve.

04

Multi-model applications

Use gpt-5.4-image-2 for the workloads where it performs best and combine it with other models for tasks that require different capabilities, performance, or efficiency.

Frequently Asked Questions

Answers to common questions about integrating and using this AI model via AnyAPI.ai

GPT-5.4 Image 2 is a composite OpenAI endpoint that combines the GPT-5.4 language model with the GPT Image 2 generation tool. GPT-5.4 reasons about and refines the prompt, then GPT Image 2 renders it. It accepts text, images, and PDF files, and returns both images and text.

This composite image endpoint has a 272,000-token context window and supports up to 128,000 completion tokens. That is smaller than base GPT-5.4's 1.05M-token window, so very long multimodal briefs may need to be condensed before being passed to this endpoint.

No. This specific image endpoint does not accept tools, so function calling is unavailable here. It does support structured outputs via a JSON schema in response_format. Agentic tool orchestration must be handled through the standard GPT-5.4 text endpoint instead.

Both use the same image generator, so rendering quality is comparable. GPT-5.4 Image 2 adds a reasoning and prompt-refinement layer via GPT-5.4, improving instruction-following at the cost of higher latency. Standalone gpt-image-2 calls the Images API directly with no language-model overhead, generating faster for well-specified prompts.

It is strongest for text-heavy, instruction-driven visuals: marketing assets with legible copy, UI mockups, multilingual labels, and infographics. The underlying model renders text at roughly 99% character-level accuracy across Latin and non-Latin scripts at native 2K resolution, making it well suited to production assets rather than high-volume batch generation.