LLM models

Claude Opus 5.5

An AI model built for code and autonomous agents. It features a context window of one million tokens and enables detailed analysis of documents, charts, and screenshots. It is 40% less expensive than its predecessor (Opus 5)

An AI model built for code and autonomous agents. It features a context window of one million tokens and enables detailed analysis of documents, charts, and screenshots. It is 40% less expensive than its predecessor (Opus 5) » Learn more: ChatGPT Perplexity Tool of the Week Sep 21 – 27, 2026 Verified Tool Freemium 220257 Similar AI Tools GPT-6 Astra Claude Fable 5.1 GPT‑6.1 Sol

GPT-6 Astra

The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting research. With a context of 1 million tokens

The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting research. With a context of 1 million tokens » Learn more: ChatGPT Perplexity Tool of the Week Aug 25 – 31, 2026 Verified Tool Freemium 218548 Similar AI Tools Claude Fable 5.1 Claude Fable 5 Grok 4.6

Claude Fable 5.1

Anthropic's LLM model for coding, research, and long, complex tasks. With improved performance and reduced costs on agent-based workloads. It also produces far fewer false security alerts

Anthropic's LLM model for coding, research, and long, complex tasks. With improved performance and reduced costs on agent-based workloads. It also produces far fewer false security alerts » Learn more: ChatGPT Perplexity Verified Tool Paid 211777 Similar AI Tools GPT-6 Astra Claude Fable 5 Grok 4.6

GPT‑6.1 Sol

An upgraded version that comes close to the intelligence of the GPT-6 Astra model at about one-fifth the cost. Enjoy better results in programming, writing, and agent-based tasks. You’ll also benefit from a context size exceeding one million tokens

An upgraded version that comes close to the intelligence of the GPT-6 Astra model at about one-fifth the cost. Enjoy better results in programming, writing, and agent-based tasks. You’ll also benefit from a context size exceeding one million tokens » Learn more: ChatGPT Perplexity Verified Tool Freemium 210984 Similar AI Tools Claude Opus 5.5 GPT-6 Astra Claude Fable 5.1

Claude Fable 5

Discover a next-generation AI model designed for advanced use while remaining highly secure. You’ll enjoy top-tier performance for coding, analysis, and research, while safeguards block sensitive applications such as cybersecurity and biology

Discover a next-generation AI model designed for advanced use while remaining highly secure. You’ll enjoy top-tier performance for coding, analysis, and research, while safeguards block sensitive applications such as cybersecurity and biology » Learn more: ChatGPT Perplexity Tool of the Week Jun 8 – 14, 2026 Verified Tool Paid 210461 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Grok 4.6

GPT-6 Sol and Luna

Choose between two models optimized for professional work, coding, and using tools. They improve speed and significantly reduce costs compared to the previous generation

Choose between two models optimized for professional work, coding, and using tools. They improve speed and significantly reduce costs compared to the previous generation » Learn more: ChatGPT Perplexity Verified Tool Freemium 207352 Similar AI Tools Claude Opus 5.5 GPT-6 Astra Claude Fable 5.1

Claude Sonnet 5.5

A model that is 30% faster and up to 30% less expensive than the Sonnet 5 version, designed for debugging, drafting polished documents, and creating presentations. It also allows you to work on texts, interfaces, and images

A model that is 30% faster and up to 30% less expensive than the Sonnet 5 version, designed for debugging, drafting polished documents, and creating presentations. It also allows you to work on texts, interfaces, and images » Learn more: ChatGPT Perplexity Verified Tool Freemium 206698 Similar AI Tools Claude Opus 5.5 GPT-6 Astra Claude Fable 5.1

Grok 4.7

A reasoning model that is twice as fast and half the cost, works longer on difficult tasks, checks its own work more thoroughly, and is highly resistant to attempts to circumvent it. It integrates easily with Cursor or via API

A reasoning model that is twice as fast and half the cost, works longer on difficult tasks, checks its own work more thoroughly, and is highly resistant to attempts to circumvent it. It integrates easily with Cursor or via API » Learn more: ChatGPT Perplexity Verified Tool Freemium 206349 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Claude Fable 5

Grok 4.6

A powerful LLM model designed for coding, research, and long-running agentic tasks, featuring 500,000 tokens of context, tool calls, and fine-tuned reasoning effort. Available directly in Cursor and Grok Build

A powerful LLM model designed for coding, research, and long-running agentic tasks, featuring 500,000 tokens of context, tool calls, and fine-tuned reasoning effort. Available directly in Cursor and Grok Build » Learn more: ChatGPT Perplexity Tool of the Week Aug 10 – 16, 2026 Verified Tool Freemium 205857 Useful Links Official Website API Doc

Claude Opus 4.8

Take advantage of Anthropic’s AI model—more reliable, more honest, and four times less likely to overlook its own errors. Its fast mode delivers up to 2.5 times more tokens per second (at the same API rate as the previous version)

Take advantage of Anthropic’s AI model—more reliable, more honest, and four times less likely to overlook its own errors. Its fast mode delivers up to 2.5 times more tokens per second (at the same API rate as the previous version) » Learn more: ChatGPT Perplexity Tool of the Month June 2026 Verified Tool Paid 203066 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Claude Fable 5

Kimi K3

Moonshot's LLM model, which rivals the best proprietary models on numerous benchmarks. Designed for long-form coding, advanced reasoning, and knowledge work tasks, it is also the first open-source model to surpass the 2.8 trillion-parameter mark

Moonshot's LLM model, which rivals the best proprietary models on numerous benchmarks. Designed for long-form coding, advanced reasoning, and knowledge work tasks, it is also the first open-source model to surpass the 2.8 trillion-parameter mark » Learn more: ChatGPT Perplexity Tool of the Month July 2026 Freemium 202289 Useful Links Official Website Hugging Face Direct Access

Gemini 3.7 Flash

A fast and cost-effective model designed for code, agents, and complex workflows, with a 1-million-token context and significant improvements on long-running tasks and multi-step execution. Compared to its predecessor, this model scores 9 points higher on FrontierCode 1.1 and 16 points higher on DeepSWE v1.1

A fast and cost-effective model designed for code, agents, and complex workflows, with a 1-million-token context and significant improvements on long-running tasks and multi-step execution. Compared to its predecessor, this model scores 9 points higher on FrontierCode 1.1 and 16 points higher on DeepSWE v1.1 » Learn more: ChatGPT Perplexity Verified Tool Free 201993 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Claude Fable 5

DeepSeek-V4.1-Flash

A multimodal model with 552B parameters, of which only 8B are active at the input stage, featuring native visual understanding and accessible via API for your applications. This open-source model uses a Causal Encoder-Decoder architecture to respond to your text and image queries

A multimodal model with 552B parameters, of which only 8B are active at the input stage, featuring native visual understanding and accessible via API for your applications. This open-source model uses a Causal Encoder-Decoder architecture to respond to your text and image queries » Learn more: ChatGPT Perplexity Free 198003 Useful Links Official Website Hugging Face

GLM-5.3

A long-term coding and agent model based on GLM-5.2, featuring enhanced training, a 1-million-token context, and always-active reasoning that can be adjusted across three levels. This LLM stands out for its performance in logical reasoning and semantic understanding.

A long-term coding and agent model based on GLM-5.2, featuring enhanced training, a 1-million-token context, and always-active reasoning that can be adjusted across three levels. This LLM stands out for its performance in logical reasoning and semantic understanding. » Learn more: ChatGPT Perplexity Tool of the Week Aug 17 – 23, 2026 Free 196944 Useful Links Official Website Documentation ZCode

GLM-5.3-Flash

The first natively multimodal model in the GLM-5 family, capable of observing interfaces and generating code based on what it sees, with a context of 1 million tokens at a very low cost

The first natively multimodal model in the GLM-5 family, capable of observing interfaces and generating code based on what it sees, with a context of 1 million tokens at a very low cost » Learn more: ChatGPT Perplexity Free 196091 Useful Links Official Website Hugging Face Doc

DeepSeek V4

This Mixture-of-Experts model, with approximately 1 trillion parameters, features a 1M-token context, virtually infinite Engram memory, and multimodal capabilities for text, images, and video. It aims to achieve performance scores comparable to Claude Opus while remaining significantly more affordable (to be released under the Apache 2.0 license)

This Mixture-of-Experts model, with approximately 1 trillion parameters, features a 1M-token context, virtually infinite Engram memory, and multimodal capabilities for text, images, and video. It aims to achieve performance scores comparable to Claude Opus while remaining significantly more affordable (to be released under the Apache 2.0 license) » Learn more: ChatGPT Perplexity Free 194775 Useful Links Official Website Hugging Face Direct access API X

Grok 4.5

Leverage powerful AI optimized for coding, finance, and autonomous tasks. This new LLM model from SpaceXAI is designed to be fast, cost-effective, and capable of handling complex end-to-end workflows. Trained with Cursor

Leverage powerful AI optimized for coding, finance, and autonomous tasks. This new LLM model from SpaceXAI is designed to be fast, cost-effective, and capable of handling complex end-to-end workflows. Trained with Cursor » Learn more: ChatGPT Perplexity Verified Tool Paid 192179 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Claude Fable 5

Gemini 3.1 Pro

A Google AI model capable of handling complex tasks involving text, images, audio, or video. It can summarize lengthy sources, analyze data, and assist in coding end-to-end interfaces

A Google AI model capable of handling complex tasks involving text, images, audio, or video. It can summarize lengthy sources, analyze data, and assist in coding end-to-end interfaces » Learn more: ChatGPT Perplexity Verified Tool Paid 190517 Useful Links Official Website Model Card API Doc

GLM-5.2

An open-source model designed for code and long-running tasks, with a context window of up to 1 million tokens. This Mixed Expert (MoE) LLM handles complex projects, analyzes entire repositories, and performs multi-step reasoning. It is available as open source under the MIT license

An open-source model designed for code and long-running tasks, with a context window of up to 1 million tokens. This Mixed Expert (MoE) LLM handles complex projects, analyzes entire repositories, and performs multi-step reasoning. It is available as open source under the MIT license » Learn more: ChatGPT Perplexity Tool of the Week Jun 15 – 21, 2026 Free 186682 Useful Links Official Website Hugging Face GitHub API Doc

Claude Sonnet 5

An LLM model built to act as a true technical collaborator. It plans, uses the browser and terminal, manages code across long contexts, and achieves Opus-level scores. It is also more affordable and better suited for autonomous agents

An LLM model built to act as a true technical collaborator. It plans, uses the browser and terminal, manages code across long contexts, and achieves Opus-level scores. It is also more affordable and better suited for autonomous agents » Learn more: ChatGPT Perplexity Tool of the Week Jun 24 – 30, 2026 Verified Tool Freemium 186059 Similar AI Tools GPT-6 Astra Claude Fable 5.1 Claude Fable 5

Gemini 3.6 Flash

Designed for intensive tasks, this model from Google’s Gemini family outperforms its predecessor in token efficiency while improving performance in coding and knowledge-based tasks. With a 1-million-token context, full multimodality, and better agentic task performance

Designed for intensive tasks, this model from Google’s Gemini family outperforms its predecessor in token efficiency while improving performance in coding and knowledge-based tasks. With a 1-million-token context, full multimodality, and better agentic task performance » Learn more: ChatGPT Perplexity Verified Tool Free 181478 Useful Links Official Website Direct Access Google AI Studio API Doc

GPT‑5.5 Instant

Use a more reliable and accurate ChatGPT. This new model significantly reduces hallucinations on sensitive topics (medicine, law, finance). It provides shorter responses and offers greater personalization based on your files, past conversations, and connected Gmail account

Use a more reliable and accurate ChatGPT. This new model significantly reduces hallucinations on sensitive topics (medicine, law, finance). It provides shorter responses and offers greater personalization based on your files, past conversations, and connected Gmail account» Learn more: ChatGPT Perplexity Tool of the Week May 4 – 10, 2026 Verified Tool Freemium 180819 Useful Links Official Website Direct access

Claude Opus 4.6

Anthropic API · Claude Opus 4.6

Anthropic's most powerful model, capable of handling contexts of 1 million tokens and reasoning adaptively. It coordinates multiple agents in parallel to solve complex tasks. You control the level of effort, intelligence, or cost with 4 available settings

Anthropic's most powerful model, capable of handling contexts of 1 million tokens and reasoning adaptively. It coordinates multiple agents in parallel to solve complex tasks. You control the level of effort, intelligence, or cost with 4 available settings » Learn more: ChatGPT Perplexity Tool of the Month February 2026 Verified Tool Paid 180796 Useful Links Official Website Direct access

Gemini 3

Google's most intelligent multimodal model: advanced reasoning, deep contextual understanding, autonomous agents, visual coding, and Deep Think mode. It performs particularly well for agentic coding

Google's most intelligent multimodal model: advanced reasoning, deep contextual understanding, autonomous agents, visual coding, and Deep Think mode. It performs particularly well for agentic coding » Verified Tool Free 180206 Useful Links Official Website Try it here AI Studio Google