OpenAI API and Models on GPTProto

gpt-5.6-luna is the fastest and cheapest tier of OpenAI's GPT-5.6 family, built for cost-sensitive, high-volume workloads: classification, extraction, summarization, and user-facing chat. The gpt 5.6 luna api on GPTProto costs $0.80/$4.80 per 1M tokens — 20% under OpenAI's $1/$6 list price.

gpt-5.6-terra is the balanced tier of OpenAI's GPT-5.6 family, positioned for everyday production traffic: coding, RAG, document analysis, and structured outputs. The gpt 5.6 terra api on GPTProto costs $2/$12 per 1M tokens — 20% under OpenAI's $2.50/$15 — billed from one balance shared across 200+ models.

gpt-5.6-sol is OpenAI's flagship reasoning model for multi-step logic and autonomous agents, released July 2026. The gpt 5.6 sol api on GPTProto costs $4/$24 per 1M tokens — 20% under OpenAI's $5/$30 list — billed from one balance shared across 200+ models.

The gpt-5.1 chat latest API serves the GPT-5.1 snapshot that ran inside ChatGPT, tuned for fast, natural conversation. With a 128K-token context window, text and image input, and native function calling, gpt 5.1 chat fits chatbots, support agents, and RAG. Generate one GPTProto gpt 5.1 chat api key and call it alongside gpt 5.5 and every other model from a single endpoint.

The gpt 5.4 pro api is a high-fidelity model designed for complex logic and backend coding. Known for solving historic math problems, this gpt provides deep technical accuracy for researchers and large institutions seeking stable pro output.

The gpt 5.5 pro api delivers scientific-grade reasoning at blazing speeds. Optimized for professional developers, this gpt model slashes token consumption while excelling in complex code debugging and long-context logic tasks.

GPT-5.5 represents a significant shift in speed and creative intelligence. Users transition to GPT-5.5 for its enhanced coding logic and emotional context retention. While GPT-5.5 pricing reflects its premium capabilities, the GPT 5.5 api efficiency often reduces total token waste. This guide analyzes GPT-5.5 performance metrics, token costs, and creative writing improvements. GPT-5.5 — a breakthrough in conversational AI and complex reasoning.

gpt-image-2 is OpenAI's April 2026 image model: agentic "thinking" that plans composition before rendering, native 2K output, multilingual in-image text (including CJK), and mask-based editing with up to 16 reference images. Route it through GPTProto with the standard OpenAI request shape.

The text-embedding-ada-002 model is the industry standard for transforming text into high-dimensional vector representations. By utilizing text-embedding-ada-002, developers can achieve unparalleled accuracy in semantic search, recommendation engines, and sentiment analysis tasks. This specific ai model optimizes cost and performance, making the text-embedding-ada-002 api a top choice for enterprise-grade ai applications. At GPTProto, we provide seamless access to text-embedding-ada-002 without the hassle of complex credit systems. By integrating text-embedding-ada-002 into your stack, you unlock the ability to process vast amounts of unstructured data with ease, ensuring your ai projects remain scalable and efficient.

The GPT-5.4 Nano API is OpenAI's high-efficiency, text-to-text endpoint for developers who need reliable intelligence without the cost or latency of larger models. Built for real-time classification, intent detection, and concise summarization, GPT-5.4 Nano runs at 150+ tokens per second and lists at $0.16 / 1M input and $1 / 1M output tokens — currently 20% off on GPTProto. It's a cost-effective, pay-as-you-go path to production AI, with one API key that works across every model on the platform.

The gpt-5.4-mini AI model represents the pinnacle of compact intelligence, offering developers a high-efficiency alternative for high-volume tasks. Designed for the Responses API, gpt-5.4-mini excels in speed, cost-effectiveness, and reasoning capabilities compared to previous generations. On GPTProto.com, gpt-5.4-mini provides a seamless integration experience with no credit limitations and ultra-stable performance. Whether you are building real-time chat agents or complex data processing pipelines, gpt-5.4-mini delivers consistent results. By leveraging the gpt-5.4-mini API, businesses can scale their AI operations without the typical overhead of larger, more expensive reasoning models.

gpt-5.4 represents the latest evolution in large language models, moving beyond simple chat completions into a fully agentic ecosystem. Available now on GPT Proto, gpt-5.4 utilizes the revolutionary Responses API to provide built-in tools like web search and code interpreter natively. With a significant boost in reasoning capabilities and a 3% improvement in SWE-bench scores over its predecessors, gpt-5.4 is designed for developers who need stateful context and high-fidelity output for complex problem-solving. Experience the future of AI automation with gpt-5.4 on our high-stability platform.

The o3-mini/text-to-text model represents the pinnacle of cost-efficient reasoning. Engineered by OpenAI and hosted on the high-performance GPT Proto platform, o3-mini/text-to-text excels in complex problem-solving across mathematics, programming, and scientific domains. Unlike standard large language models, o3-mini/text-to-text utilizes a specialized reasoning chain to verify logic before responding, significantly reducing hallucinations. By integrating o3-mini/text-to-text through GPT Proto, users gain access to a streamlined infrastructure that minimizes latency while maintaining the deep cognitive capabilities required for sophisticated enterprise applications.

The gpt-5.3-codex/text-to-text model represents the pinnacle of agentic text and code generation. Built on the revolutionary Responses API framework, this model transcends traditional chat completions by offering native multi-turn state management and integrated tool use. Whether you are automating complex software refactoring or building high-fidelity reasoning agents, gpt-5.3-codex/text-to-text delivers a 30% improvement in logic consistency over previous iterations. On GPT Proto, developers gain access to this powerhouse with optimized prompt caching and a transparent 'Add Funds' billing system that ensures maximum ROI for enterprise-scale deployments.

The gpt-4.1-mini-2025-04-14/text-to-text is a revolutionary compact language model designed for high performance text generation with minimal latency. Released in early 2025, this model bridges the gap between massive flagship models and ultra fast lightweight versions. It excels in real time conversational agents, complex summarization, and structured data extraction. Unlike its predecessors, gpt-4.1-mini-2025-04-14/text-to-text leverages a new distillation architecture that retains 95% of the reasoning power of the full GPT 4 suite while reducing token costs significantly. Developers favor gpt-4.1-mini-2025-04-14/text-to-text for its ability to handle nuanced instructions and technical prose without the overhead of larger systems.

gpt-5.2-codex/text-to-text represents the pinnacle of OpenAI's reasoning series, specifically optimized for high-density logic and programmatic structures on the GPT Proto platform. Building upon the foundational GPT-5 architecture, this codex variant integrates specialized training for syntax accuracy and algorithmic problem solving. It functions as a high-intelligence text-to-text engine that excels in translating complex human requirements into executable logic or nuanced technical prose. By utilizing the refined gpt-5.2-codex on GPT Proto, developers gain a significant edge in speed and context retention compared to standard reasoning models, making it the premier choice for enterprise-grade automation and deep research applications.

gpt-5.2 represents the cutting edge of OpenAI's language model evolution, specifically refined for deep reasoning and multimodal efficiency. As an incremental but powerful update within the GPT-5 ecosystem, gpt-5.2 introduces enhanced control over reasoning effort and improved instruction following through the new Responses API. This model is designed for developers who require high precision in code generation, logical deduction, and vision processing. On the GPT Proto platform, users can leverage gpt-5.2 for enterprise-grade applications, benefiting from its superior context window and low-latency performance. Whether building autonomous agents or complex analytics tools, gpt-5.2 provides the scalability and reliability required for modern AI-driven innovation.

gpt-image-1.5/text-to-image is an advanced multimodal AI model built for accurate and fast text-to-image generation. Part of the GPT family, it leverages foundational GPT technology but is uniquely optimized for visual synthesis. Developers use it for rapid prototyping, creative design workflows, and automated image generation tasks. Compared to standard GPT models, it adds robust image processing, visual creativity, and seamless integration with multimodal workflows, making it a powerful tool for digital content creators, marketers, and product teams operating in diverse industries.

gpt-5.2-pro-2025-12-11 is a state-of-the-art AI language model designed for developers and enterprises needing robust text generation, code assistance, and data analysis. As part of the GPT-5 series, it offers enhanced speed, improved context management, and multimodal support. Compared to its predecessors, gpt-5.2-pro-2025-12-11 delivers superior accuracy, creative flexibility, and scalable API performance, making it ideal for demanding business and technical applications.

gpt-5.2-2025-12-11/text-to-text is a state-of-the-art AI language model from OpenAI’s fifth generation, designed for high-speed and precise text generation. Built on enhanced transformer technology, it supports advanced creative writing, programming help, summarization, and technical content. Improving on prior GPT models, it delivers faster responses, better accuracy, and more context-aware outputs, making it ideal for developers, enterprises, researchers, and writers demanding reliable performance. Its specialized text-to-text focus ensures consistent, logical, and human-like output for modern AI-powered applications.

gpt-5.2-chat-latest/text-to-text is a cutting-edge text modality AI model from OpenAI, designed for developers needing fast, accurate, context-driven output in chat, writing, programming, and analytics. Building on the GPT-5 family, it offers improved response speed and logic over previous versions. This model delivers stable, creative, and scalable text processing, making it ideal for applications in content generation, automated support, technical writing, and data analysis. Compared to earlier GPT models, it features deeper contextual reasoning and better adaptation for professional workflows, setting it apart in quality and efficiency for technical users across industries.

gpt-5.2-pro/text-to-text is a powerful generative AI model from the fifth-generation GPT family designed for advanced text-only tasks. It excels in text creation, code support, and extended enterprise scenarios requiring high reliability and accuracy. Compared to earlier GPT versions, gpt-5.2-pro/text-to-text delivers faster, more context-rich outputs, precise response handling, and improved creative reasoning. It is ideal for developers and professionals needing scalable, efficient text workflow automation and robust language capabilities for critical projects.

gpt-5.2/text-to-text is a next-generation AI language model designed for rapid, precise text-based tasks such as writing, summarizing, code generation, and data analysis. As a part of the advanced GPT-5 family, it integrates improved text understanding with higher speed and accuracy compared to previous models. Its specialized architecture supports scalable performance, robust context management, and reliable results in professional settings. Developers, analysts, and educators benefit from its focused text-to-text processing, making it ideal for demanding workflows and seamless API integration. Compared to generic models, gpt-5.2/text-to-text offers enhanced analytic strength and optimized experience for enterprise applications.

GPT-5.1-Codex is an advanced coding model from OpenAI optimized for sustained, long-horizon software engineering tasks. It features a unique context compaction mechanism that preserves critical information across multiple sessions to handle large projects coherently. GPT-5.1-Codex-Max offers higher token efficiency, long-duration agentic coding workflows, and improved quality in debugging, refactoring, and CI/CD automation, making it ideal for complex and multi-file codebase management

The gpt 4o mini api is a high-performance small model from OpenAI. It offers 128k context, native vision support, and low latency for high-volume tasks. Ideal for cost-conscious devs needing GPT-4 level intelligence at a fraction of the price.

chatgpt 4o latest provides the exact dynamic RLHF tuning and multimodal performance seen in ChatGPT. With 128k context and low latency, it is the premier choice for agentic workflows and complex vision tasks on GPTProto.com.

GPT-5.1 is OpenAI's newest GPT-5 series model, designed for developers. It uses adaptive reasoning to dynamically adjust thinking time, speeding up simple tasks by 2-3x without sacrificing intelligence. New features like "reasoning-free" mode, 24-hour caching, and apply_patch/shell tools significantly boost code editing and programming efficiency. This release delivers a powerful and optimized AI experience.

GPT-image-1-mini is OpenAI’s lightweight model for creating new images directly from textual prompts. It provides fast and affordable image generation up to 1536×1024 resolution, with adjustable quality and fidelity. It’s ideal for bulk creative applications, though maximum micro-detail and photorealism are less than premium models

The text-embedding-3-small model represents a major leap in embedding efficiency and cost-effectiveness. As a cornerstone of modern natural language processing, text-embedding-3-small allows developers to transform text into high-dimensional vectors that capture deep semantic meaning. Optimized for Retrieval-Augmented Generation (RAG) and semantic search, text-embedding-3-small outperforms previous generations like ada-002 while reducing infrastructure costs. By integrating text-embedding-3-small through GPTProto, you gain access to a stable, low-latency API that supports dimensionality reduction, enabling faster vector database queries and more scalable AI solutions without the complexity of traditional credit systems.

The text-embedding-3-large model represents the pinnacle of semantic representation in the AI industry. With 3072 dimensions, text-embedding-3-large provides unparalleled nuance for vector search, recommendation engines, and RAG systems. Available via the high-speed GPTProto API, text-embedding-3-large allows developers to capture complex relationships in text data. Whether you are building a global search platform or a niche AI agent, text-embedding-3-large offers the stability and depth required for professional-grade deployments. GPTProto ensures that your text-embedding-3-large integration is cost-effective, reliable, and easy to scale without complex credit systems or hidden fees.

The gpt 5 chat model represents OpenAI's latest leap in reasoning and native multimodality. With a 256k context window and agentic planning, gpt 5 chat solves complex coding and scientific challenges with unparalleled accuracy.

The gpt 5 codex api by OpenAI is a frontier-class model for the full software development lifecycle. It offers a 256k context window, autonomous repo-level editing, and native vision-to-code generation with unparalleled reasoning.

Sora 2 Pro is OpenAI's higher-fidelity text-to-video model. Send a text prompt, get back an MP4 with motion, physics, and audio generated in the same pass. On GPTProto you call the Sora 2 Pro API with one key and one balance shared across 200+ models — no separate OpenAI developer account, and no usage-tier requirement to clear before the model unlocks.

sora2 represents the pinnacle of generative video technology, offering unprecedented realism and temporal consistency. As the successor to the original video modeling frameworks, sora2 leverages a transformer-based diffusion architecture to synthesize complex scenes with physical accuracy. Whether you are generating cinematic landscapes or detailed character interactions, sora2 provides the fidelity required for professional production. By integrating sora2 via GPTProto, developers gain access to a stable api with flexible pricing, bypassing the limitations of traditional credit systems while ensuring top-tier ai performance for every frame generated.

The gpt 5 pro api delivers flagship performance with native multimodal tokens and System-2 reasoning. Build complex autonomous agents using 256k context and high-fidelity video understanding, all through our unified GPTProto.com platform.

The gpt 4o api delivers flagship multimodal performance with 100% schema adherence. This 2024-08-06 snapshot offers 128k context, 2x speed over Turbo, and reduced pricing for high-volume developer needs and complex reasoning agents.

The GPT 5 Nano API is OpenAI's fastest multimodal model, offering 128k context and native audio processing. Perfect for high-volume orchestration and real-time support, it delivers superior reasoning at just $0.05 per million input tokens.

The gpt 5 mini api offers GPT-4o-level intelligence with sub-second latency. Optimized for high-volume production, this multimodal model supports 128k context windows for reliable extraction and real-time reasoning at a minimal cost.

GPT 5 API offers frontier agentic autonomy and system-2 reasoning. This native multimodal model supports a 256k context window, enabling complex task planning and deep logic verification across text, audio, and video for advanced applications.

OpenAI's gpt 4o mini api delivers superior intelligence for high-volume tasks. With a 128k context window and multimodal support, this mini model excels in reasoning and structured data extraction while maintaining ultra-low latency and cost.

Turn up to 2,000 input tokens into steerable spoken audio with 13 built-in voices and MP3, Opus, AAC, FLAC, WAV, or PCM output. Access gpt-4o-mini-tts on GPTProto at $0.42 per 1M text-input tokens and $8.40 per 1M audio-output tokens—30% below OpenAI's listed rates.

The gpt 4o transcribe api delivers accurate speech-to-text. This gpt 4o powered api handles whispering and standard speech through advanced air current modeling and reasoning models, ensuring your transcribe projects succeed with GPTProto.

gpt-4.1-2025-04-14/text-to-text is an advanced natural language AI model from OpenAI’s latest GPT-4.1 generation, specializing in complex text generation, intelligent code assistance, and nuanced data processing. Designed for enterprise reliability and developer productivity, it delivers more precise outputs, faster inference, and improved context understanding compared to earlier versions. Tailored for text-to-text tasks, it outperforms many general models in structured content creation, professional communication, and scalable document workflows.

o4-mini is a high-speed, cost-efficient reasoning model on GPTProto.com. It bridges the gap between basic chat and frontier logic, offering native multimodal capabilities, agentic tool-use, and superior STEM performance for complex tasks.

o3 is OpenAI’s premier reasoning model, built for elite STEM tasks and advanced coding. With 200k context and high-effort logical thinking, o3 sets new benchmarks in math and complex problem-solving for developers on GPTProto.com.

The GPT 4.1 nano api delivers sub-second latency and high-throughput performance. Optimized for structured outputs and vision tasks, this gpt model provides a cost-effective alternative to larger LLMs without sacrificing technical reliability.

The gpt 4.1 mini api delivers sub-second latency and 128k context for high-frequency utility tasks. Optimized for speed and cost, it offers superior visual logic and native structured outputs for developers building agentic workflows at scale.

The gpt 4.1 api is a specialized model version favored for its deep intellectual nuances and creative writing prowess. While newer models emerge, gpt 4.1 remains a reliable choice for consistent, non-corporate style outputs.

The gpt-image-1/image-edit model represents a paradigm shift in visual manipulation. Unlike traditional diffusion-based editors, gpt-image-1/image-edit is a natively multimodal large language model. This means it doesn't just process pixels; it understands the semantic context of your requests. Whether you are adding a complex object to a scene or modifying lighting based on world knowledge, gpt-image-1/image-edit delivers unparalleled coherence. By integrating gpt-image-1/image-edit into your workflow on GPT Proto, you gain access to a tool that follows instructions with human-like reasoning, ensuring your visual edits are both creative and technically accurate.

gpt-4o/text-to-text is OpenAI’s latest-generation language model designed for high-performance text generation and understanding. It combines optimized speed, improved logic, and multi-turn conversational skills. Ideal for real-time writing, code generation, and data analysis, gpt-4o/text-to-text stands apart from previous models like GPT-4 because of its scalable throughput and context-aware accuracy. Developers rely on it for reliable automation and productivity across business, tech, and education sectors.