Manually choose competitor
Complexity
| Feature | ||
|---|---|---|
| Pricing | Paid | Freemium |
| Price from | — | $8/mo |
| Free tier | No | Yes |
| API | Yes | Yes |
| Open source | No | No |
| Platforms | Desktop | Desktop |
| Models | Cplx | Openai |
| Context window | 1M | 128k |
| Launched | 2024 | 2025 |
Top alternatives to Complexity
See all alternatives →OpenAI
OpenAI's main chat interface, supporting GPT-4o, image input, voice, browsing, and DALL-E generation
Google Gemini
Google's multimodal AI with long-context processing and built-in Search grounding
Claude
Anthropic's AI assistant, rated strongest for coding and instruction-following
Grok
xAI's conversational model with real-time access to X posts
Inline Help
AI-powered knowledge base for customer support
Friday
Get AI suggestions while writing email
Specs
| Pricing | Paid |
|---|---|
| Free tier | No |
| API | Yes |
| Open source | No |
| Platforms | Desktop |
| Models | Cplx |
| Context window | 1M |
| Launched | 2024 |
News
Hy4 makes the open-model choice a serving decision
August 30, 2026
Tencent’s Hy4 preview combines 770B total parameters, 49B activated per token, a 1M context, and documented vLLM and SGLang serving paths. Its internal evaluation is promising but not independent proof of general superiority.

