Agents & Models

OutcomeDev enables you to use the world's most powerful AI models. Here is how to choose the right one for your needs.

Available Agents

Claude (Anthropic)

The Coding Specialist

• Best For: Writing clean code, refactoring, and understanding large projects.

• Models:

  • Fable 5: Anthropic's most capable model, a tier above Opus for the hardest long-horizon work. 1M context.
  • Opus 5: The Opus flagship for coding and agentic work. 1M context, 128K max output.
  • Sonnet 5: Near-Opus agentic coding at Sonnet speed and cost. The recommended default.
  • Haiku 4.5: Lightweight and fast, ideal for simple tasks and quick responses.

  Opus 4.8, Opus 4.6, and Sonnet 4.6 were retired on July 24, 2026, superseded by Opus 5 and Sonnet 5 at the same price. Tasks that already ran on them keep their history.

Codex (OpenAI)

The Reasoner

• Best For: Architecture, logic, and following complex instructions.
• Models:
  • GPT-5.3 (Reasoning): The most advanced model for complex reasoning and problem-solving.
  • GPT-5.3-Codex: Excels in code generation, understanding, and completion.
  • GPT-5.3-Codex-Spark: Optimized for rapid code generation and quick iterations.
  • GPT-5.3 Instant: Fast responses for quick tasks.
  • GPT-5.2 (Thinking): "Thinks" before answering to solve hard logic puzzles.
  • GPT-5.2 Instant: Fast responses for quick tasks.

Gemini (Google)

The Multimodal Expert

• Best For: Working with images, design, and massive amounts of data.
• Models:
  • Gemini 3.1 Pro (Preview): Successor to Gemini 3 Pro with improved reasoning and token efficiency. Optimized for software engineering.
  • Gemini 3 Pro (Preview): Our most advanced reasoning model for complex multimodal problems (1M context).
  • Gemini 3 Flash (Preview): Agentic workhorse with near-Pro intelligence and balanced speed.
  • Gemini 3.1 Flash-Lite (Preview): Best-in-class cost/performance for high-volume agentic tasks.
  • Gemini 3 Pro Image (Preview): Specialized model for high-fidelity image generation and multimodal editing.
  • Gemini 2.5 Pro: Reliable, low-latency reasoning for advanced production tasks.
  • Gemini 2.0 Flash: Fast, multimodal model for general task completion.

Kimi (Moonshot AI)

The Agentic Marathoner

• Best For: Long-horizon agentic coding, frontend-heavy builds, and huge-context work.
• Models:
  • K3: 2.8T MoE flagship with Kimi Delta Attention and a 1M context window. Frontier agentic benchmarks (93.5% GPQA Diamond, 88.3% Terminal-Bench 2.1) and #1 on the Frontend Code arena at launch. Open weights promised by July 27, 2026.
  • K2.7 Code: Specialized MoE optimized for autonomous coding, fast and economical for everyday tasks.
  • K2.6: 1T MoE with 300 sub-agents, balanced general capabilities.

How to Choose?

Goal	Recommended Model
I need complex logic & architecture	Gemini 3.1 Pro (Preview) / GPT-5.3 (Reasoning)
I need high-quality code generation	Claude Opus 5 / Gemini 3.1 Pro (Preview)
I need complex agent capabilities/computer use	Claude Sonnet 5 / Gemini 3 Flash (Preview)
I need to work with designs/images	Gemini 3.1 Pro (Preview) / Gemini 2.5 Flash Image
I need a quick answer	Gemini 3.1 Flash-Lite (Preview) / GPT-5.3 Instant / Claude Haiku 4.5

Compare Mode

Not sure which model to use? Select the Compare agent. This allows you to run your prompt against multiple models simultaneously (e.g., Claude vs. GPT-5.2) so you can pick the best result.

Next Steps

Once you've chosen a model, you'll want to select the right framework for your project. Check out our Framework Guide to learn more.