PicksByModel · 2026-09-21

AI Models with Built-in Reasoning Modes: A Guide for Practitioners

This 27B-parameter reasoning model from PrismML supports coding, mathematics, tool calling, and image understanding. It has a 262K-token context window.

Overview of Available Options

The following AI models have built-in reasoning modes:

Model-Specific Capabilities

PrismML: Ternary Bonsai 2 27B

This 27B-parameter reasoning model from PrismML supports coding, mathematics, tool calling, and image understanding. It has a 262K-token context window.

Price:

  • Input per million tokens (MTOK): $0.075
  • Output per MTOK: $0.5

Z.ai: GLM 5.3 FlashX

GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, delivering inference speeds of up to 200 tokens/s.

Price:

  • Input per MTOK: $0.37
  • Output per MTOK: $1.25

DeepSeek: Flash Latest

This model redirects to the latest model in the DeepSeek Flash family and has a price for input and output as follows:

  • Input per MTOK: $0.13
  • Output per MTOK: $0.52

OpenAI: GPT Sol and GPT Terra Latest Models

Both of these models always redirect to the latest model in their respective families, with prices as follows:

  • GPT Sol:
  • Input per MTOK: $2.0
  • Output per MTOK: $10.0
  • GPT Terra:
  • Input per MTOK: $2.0
  • Output per MTOK: $12.0

Choosing the Right Model for Your Needs

Use PrismML's Ternary Bonsai 2 27B if you need:

  • Advanced coding and mathematical reasoning capabilities
  • Support for tool calling and image understanding

Consider this model when working with complex technical tasks.

Choose Z.ai's GLM 5.3 FlashX for:

  • High-speed inference (up to 200 tokens/s)
  • Multimodal support

Select this option if you prioritize speed in your workflow.

Select DeepSeek's Flash Latest Model When You Need:

  • The latest model and capabilities from the DeepSeek Flash family

This choice is ideal when working with rapidly changing or emerging technologies.

Use OpenAI's GPT Sol for:

  • High-end text generation and reasoning tasks
  • Large-scale applications

Opt for this option if you require advanced text processing capabilities.

Opt For OpenAI's GPT Terra When You Need:

  • The highest level of output quality from the GPT Terra family
  • Enterprise-level support

This model is recommended for large-scale, high-stakes applications.

Practical Considerations

When choosing an AI model with built-in reasoning modes, consider your specific needs and the task at hand. Evaluate each option based on its capabilities, pricing, and performance. Be sure to consult the latest data and prices before making a decision.

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