Models

Kimi K3 is a high-performance AI model designed for advanced reasoning, coding, and complex task execution. It delivers strong performance on large-scale programming projects, multi-step problem solving, and knowledge-intensive applications. With broad context handling and multimodal capabilities, K3 is suitable for building powerful AI agents, developer tools, and enterprise-level applications.

GPT-5.5 is described by OpenAI as a smarter frontier model for coding, research, data analysis, and professional knowledge work. The official launch messaging emphasizes higher capability, better speed than previous difficult-work models, and strong performance on tasks involving documents and structured analysis. Its description should focus on broad professional intelligence rather than a single niche.

DeepSeek V4 Pro is described as a large-scale Mixture-of-Experts model with 1.6T total parameters and 49B activated parameters, while keeping a 1M-token context window for very large inputs. Its model cards emphasize advanced reasoning, coding, and long-horizon agent workflows rather than simple chat. The Pro variant is the capability-oriented member of the V4 family, making it better suited to full-codebase analysis, large research synthesis, and multi-step automation where depth matters more than the lowest possible latency.

DeepSeek V4 Flash keeps the V4 family’s 1M-token context window but uses a lighter MoE configuration, commonly described as 284B total parameters with 13B activated parameters. The emphasis is throughput: fast inference, lower cost per call, and production workloads that still need long-context handling. It is the better fit when the task volume is high and the workload benefits from V4-style long-context architecture without always requiring the deepest reasoning tier.

Qwen3.7 Plus takes the Qwen3.7 agent-oriented design in a more cost-effective direction. Third-party model cards describe it as supporting text and image input, with stronger vision-language ability and hybrid agent capability for GUI, mobile navigation, and visual-reference tasks. The model is suitable when users need the new Qwen3.7 capability profile without always paying for the Max tier.

GPT-4.1 is an OpenAI model generation focused on improved coding, instruction following, and long-context performance. Official announcements present it as a stronger developer model than GPT-4o for many programming and instruction-heavy tasks. Its catalog description should highlight practical coding reliability and long-context understanding.

GPT-4.1 Mini brings the GPT-4.1 family’s coding and instruction-following improvements into a faster, lower-cost form. It is suitable for high-volume developer tools, structured generation, extraction, and product features that do not require the full model. The main distinction is production efficiency while retaining the 4.1 generation’s task discipline.

GPT-4o is OpenAI’s multimodal flagship from the GPT-4o generation, built for text and image input with strong general intelligence. Official docs describe it as a versatile high-intelligence model suitable for a broad range of language and vision tasks. It remains useful where multimodal understanding and natural interaction matter more than the newest reasoning stack.

GPT-4o Mini is the fast and affordable small model in the GPT-4o family. OpenAI docs position it for focused tasks with text and image input, structured outputs, fine-tuning, and distillation workflows. It is best introduced as a lightweight multimodal production model rather than a reduced copy of GPT-4o.

GPT-5.3 Chat is the API-facing name for GPT-5.3 Instant, the ChatGPT snapshot designed to make everyday conversations smoother and more directly useful. OpenAI describes the update as improving answer accuracy, web-search contextualization, and conversational flow by reducing unnecessary caveats, dead ends, and overly cautious phrasing. It supports text and image input with text output, but OpenAI’s API docs mark it as deprecated in favor of newer GPT models.

GPT-5.3-Codex is OpenAI’s agentic coding model for Codex and similar development environments. It combines frontier software engineering performance with broader reasoning and professional knowledge, supports configurable reasoning effort, and is listed with a 400K context window and 128K max output tokens. OpenAI positions it as moving Codex beyond writing and reviewing code toward using computers, running terminal workflows, iterating on web apps, and handling real-world engineering tasks over long horizons.

GPT-5.4 is presented by OpenAI as a capable and efficient frontier model for professional work. Official materials emphasize coding, native computer use, spreadsheet/document/presentation workflows, improved factuality, and a large context window. It is well described as a practical work model that connects reasoning with real productivity tasks.

GPT-5.4 Mini is the smaller and faster member of the GPT-5.4 family. OpenAI documentation positions mini models for lower-latency workloads while retaining coding, tool use, multimodal reasoning, and strong instruction following. It is a good fit for well-scoped production tasks, subagents, and applications that need many fast calls.

GPT-5.4 Nano is the lowest-cost, smallest GPT-5.4 option for high-volume simple tasks. OpenAI’s model guidance positions nano models around latency and cost efficiency rather than maximum reasoning depth. It should be used in descriptions for classification, routing, extraction, lightweight generation, and other predictable workflows.

GPT-5.4 Pro is the more precise and higher-quality tier of GPT-5.4, built for demanding professional tasks. OpenAI’s model guidance separates Pro from the standard version by its stronger reasoning and accuracy expectations. In a catalog, it should be described as the choice for difficult analysis, complex code, and high-stakes knowledge work when extra depth is worth the cost.

GPT-5.5 Pro is the higher-compute variant of OpenAI’s GPT-5.5 generation, intended for the hardest professional tasks where answer quality matters more than speed. OpenAI materials describe the Pro tier as thinking harder for greater precision across coding, research, data analysis, and document-heavy work. It should be positioned for difficult reasoning and professional-grade deliverables rather than routine chat.

GPT-5.6 Luna is the general-purpose version of the Luna series, suitable for everyday AI applications. It can be used for chat Q&A, text rewriting, summarization, information extraction, simple reasoning, coding assistance, and office automation. Luna is a practical choice for prototypes, lightweight business features, batch content processing, and common user interaction scenarios. It is a good starting model when speed, simplicity, and cost control are important, while Luna Pro can be considered for tasks that require higher-quality or more stable outputs.

GPT-5.6 Luna Pro is the enhanced version of the Luna series, intended for higher-quality answers, more stable instruction following, and stronger task completion. It is suitable for complex conversations, content generation, knowledge Q&A, business analysis, coding assistance, and multi-step automation tasks. Luna Pro is well suited for product experiences where output quality and user experience matter, such as professional writing assistants, enterprise AI assistants, customer support, knowledge-base systems, and agent workflows. It is a good option when the task requires more reliability than the standard Luna model.

GPT-5.6 Sol is the standard version of the Sol series. It is suitable for general Q&A, text processing, content drafting, summarization, lightweight coding assistance, and business automation tasks. Sol is designed for scenarios that need solid general capability while keeping response efficiency and cost in mind. It can be used for product features, chat assistants, content-generation tools, data cleaning, knowledge-base Q&A, and batch-processing tasks. For large-scale usage or rapid prototyping, Sol is a flexible starting point.

GPT-5.6 Sol Pro is the Pro version of the Sol series, designed for complex tasks and higher-quality output. It is suitable for advanced writing, precise Q&A, business reasoning, code generation, structured analysis, and multi-turn task execution. Sol Pro is a good fit for tasks that require stronger accuracy, contextual understanding, and instruction completion. It can be used for professional content production, data-analysis assistants, knowledge Q&A systems, complex agent workflows, and internal enterprise AI tools.

GPT-5.6 Terra is the general-purpose version of the Terra series. It is suitable for everyday conversation, text generation, summarization, information extraction, lightweight reasoning, and coding assistance. Terra offers a practical balance between general capability, response efficiency, and cost. It can be used for chat assistants, content tools, office automation, knowledge-base Q&A, and batch text-processing workflows. For fast iteration or cost-sensitive applications, Terra is a strong default option within the Terra series.