Agent workflow guide
Best AI Models for Agents
Agentic work is not just "best benchmark wins." You need strong tool use, long-context memory, reliability, and sane cost under repeated calls.
GPT-5.5
Best for: Complex reasoning
Tool use: 9.7 • Reasoning: 9.8 • Context: 1M
OpenAI flagship. Strong coding and reasoning.
GPT-5.4
Best for: Coding
Tool use: 9.7 • Reasoning: 9.5 • Context: 1M
Strong coding performance. Excellent tool integration.
Gemini 3.1 Pro Preview
Best for: Multimodal tasks
Tool use: 9.3 • Reasoning: 9.5 • Context: 1M
Best long-context handling. Strong multimodal.
Grok 4.1 Fast
Best for: Long context
Tool use: 8.8 • Reasoning: 9.1 • Context: 2M
Largest context window (2M tokens). Built-in web & X search.
GPT-OSS-120B
Best for: Self-hosted
Tool use: 9 • Reasoning: 9.2 • Context: 128K
Open weights from OpenAI. Runs on single 80GB GPU.
Fast picks
- GPT-5.5 for highest-end planning and hard multi-step work
- GPT-5.4 for strong operator-style tool use at lower cost
- Gemini 3.1 Pro Preview for multimodal and long-context agents
- Grok 4.1 Fast for giant context and cheap repeated workloads
- GPT-OSS-120B for private self-hosted agent systems