GR 
Grok 4 ✓
grok.com
The latest high-performance LLM model from xAI, specialized in reasoning and logic. This AI has achieved record results in academic and mathematical tests. Multi-agent version tackles the toughest challenges
Best LLM models alternatives to GPT‑5.5
Looking beyond GPT‑5.5? Here are the top alternatives people compare, ranked by how much they overlap with GPT‑5.5 and community votes. Pricing and ratings are from the directory — nothing is guessed.
Try GPT‑5.5 first
If GPT‑5.5 fits your workflow, start there — it is paid .
Best alternatives to GPT‑5.5
All LLM models → OL 
ollama.com
Chat with local LLM language models like Llama2, Mixtral or Code Llama. Compatible with macOS, Linux and soon Windows
CL 
anthropic.com
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)
KI 
kimi.ai
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
CL
anthropic.com
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
DE 
deepseek.com
An open-source LLM model that excels in mathematical reasoning and programming. Solve complex problems and generate code with accuracy comparable to the best commercial models available
Side-by-side comparison
| Grok 4 | Ollama | Claude Opus 4.8 | Kimi K3 | |
|---|---|---|---|---|
| Pricing | Paid | Free | Paid | Freemium |
| Rating | ★★★★☆ 4.4/5 | ★★★★★ 5.0/5 | ★★★★☆ 4.4/5 | ★★★★☆ 4.4/5 |
| Votes | 591 | 407 | 293 | 290 |
| Verified | ✓ Yes | — | ✓ Yes | — |
| Categories | AI Chat & Assistant LLM models | AI Useful LLM models | LLM models | LLM models |
| Visit | Visit | Visit | Visit |
Which alternative should you pick?
Cheapest option
Start free: Ollama.
Best rated
Highest rating in this group is 4.4/5 — filter the table above to compare.
Narrow it down
Open the ⇄ compare tool on each card and put up to 4 tools side by side.