AI Engines

Free & Accessible (2025)

AI engines operating today, with hyperlinks to their official or authoritative pages, highlighting their strengths and noting those with multimodal (text + image) capabilities:

Summary Table: Best Free AI Engines for Students (June 2025)

AI Engine & Link	Developer	Strengths & Highlights	Multimodal Capability (Text + Image)
GPT-4o	OpenAI	Leading large language model with exceptional contextual understanding, multilingual fluency, and strong performance in reasoning, writing, and coding.	Yes (via GPT-4o Vision)
Claude 3.5 Sonnet	Anthropic	Emphasizes safety, alignment, and nuanced reasoning; strong in enterprise tasks and conversations.	Limited (image input in Claude Opus)
Gemini 1.5 Pro	Google DeepMind	Strong reasoning, fast responses, and robust multimodal integration (text, images, code, audio).	Yes
LLaMA 3	Meta AI	Open-source model with large parameter sizes, strong inference efficiency, and wide community use.	Emerging (via extensions)
DeepSeek-VL	DeepSeek	Open-source multimodal model excelling in text-image search, generation, and reasoning; scalable and versatile.	Yes
Mistral Large	Mistral AI	High-performance open-source LLM with fast inference and excellent generalization across NLP tasks.	Primarily text
Stable LM 2	Stability AI	Fully open-source LLM designed for accessibility; supports multimodal use via integrations.	Yes (via third-party UIs)
Amazon Q	Amazon	Cloud-optimized LLM for secure, scalable enterprise applications integrated with AWS.	Primarily text
Qwen 2	Alibaba	Open-source LLM with strong multilingual and domain versatility; community-backed development.	Emerging
XLNet	Google Brain / Microsoft	Permutation-based transformer model with superior generalization and text generation capability.	Text only
Grok-1.5	xAI	Conversational AI model emphasizing real-time interaction and memory; integrated into X (Twitter).	Emerging (limited vision integration)
Megatron-Turing NLG	NVIDIA & Microsoft	Massive-scale model optimized for high-throughput text generation, storytelling, and games.	Text only
PaLM 2 (deprecated)	Google	Previously strong in multilingual and semantic tasks; now replaced by Gemini family.	(but being phased out)

Multimodal Capability Legend
• Yes: Full support for text and image input/output
• Emerging / Limited: Experimental or partially available
• Text only

Key Notes
• Claude 3.5 is the latest available version (as of June 2025); no 3.7 exists publicly.
• PaLM 2 is considered deprecated in favor of Gemini models.
• LLaMA, DeepSeek, and Qwen are evolving toward multimodal use via open extensions.
• Most open-source models (e.g., LLaMA, Mistral, Stable LM) can be used freely in education or research.