Major providers
OpenAI
GPT-5, GPT-5-mini, the o-series and the rest of the family.
Anthropic Claude
Claude Sonnet, Claude Haiku, Claude Opus.
Google Gemini
Gemini Flash, Gemini Pro and experimental models.
xAI Grok
Grok — models from xAI.
DeepSeek
DeepSeek — strong reasoning at affordable prices.
And more
Qwen, Yi, Mistral, Llama and new models as they ship.
Model capabilities
The catalog covers different use cases:- Chat & text: classic LLMs for conversation, code, analysis.
- Multimodal (vision): models that understand images.
- Tool use / function calling: invoke external tools from model output.
- Reasoning: chain-of-thought models (o4-mini, DeepSeek R1, Claude thinking).
- Embeddings: vector representations for search and RAG.
- Audio: speech recognition and synthesis (where supported).
Why FortAPI
No VPN required
Direct access to every model — calls are made through our infrastructure.
One API key
No separate accounts at OpenAI, Anthropic and others. One key — every frontier model worldwide.
Discounted vendor pricing
Billed per 1M tokens at a discount off each provider’s official site price. No hidden markup.
Low latency
Optimized request routing for fast response times.
Full catalog and pricing
The list of available models, current per-token prices and supported capabilities lives on the Pricing page on the main site at www.fortapi.com.Choosing a model
- Simple tasks (classification, short answers):
gpt-5-mini,gemini-flash,claude-haiku— most cost-efficient. - Complex tasks (long-form analysis, coding, reasoning):
gpt-5,claude-sonnet,gemini-pro. - Reasoning (math, logic, multi-step thinking):
o4-mini,deepseek-r1,claude-sonnet(withthinking). - Vision (images):
gpt-5,claude-sonnet,gemini-flash— all support vision.