---
title: "GPT-6.1 Terra vs. Sol in Codex: How to Unlock 2X Usage Multiplier & Computer-Use Workflows"
canonical_url: "https://tibosay.com/blog/gpt-6-1-terra-vs-sol-codex-model-selection"
type: "blog"
locale: "en"
description: "Tibo announced GPT-6.1 Terra on Day 22 with 2X more usage than 6.1 Sol across API and subscriptions. Here is when to use Terra vs. Sol to double your effective coding time."
published_at: "2026-10-27T08:00:00.000Z"
updated_at: "2026-10-27T08:00:00.000Z"
---

# GPT-6.1 Terra vs. Sol in Codex: How to Unlock 2X Usage Multiplier & Computer-Use Workflows
> Tibo announced GPT-6.1 Terra on Day 22 with 2X more usage than 6.1 Sol across API and subscriptions. Here is when to use Terra vs. Sol to double your effective coding time.

## 1. What Changed with GPT-6.1 Terra (Day 22 Ship)

On Day 22 of the 28-Day Challenge, @thsottiaux announced **GPT-6.1 Terra**:

> "Terra is back! Our first model that is significantly better at writing, personality and nuanced understanding of requests. Packs a punch across the board, very good at computer use, and gives 2X more usage than 6.1 Sol across API and subscriptions."

## 2. Tactical Model Routing: Terra vs. Sol

- 🌍 Use GPT-6.1 Terra (85% of tasks — 2X Quota Efficiency) : Full-stack feature implementation, frontend/UI polishing, multi-step computer use & browser verification, documentation, and refactoring with subtle product requirements.

- ☀️ Reserve GPT-6.1 Sol (15% of tasks — Heavy Deep Reasoning) : Only switch to Sol for tricky concurrency race conditions, compiler/AST transformations, or cryptographic proofs where Terra needs extra reasoning depth.

> **Key Takeaway (TL;DR)**: GPT-6.1 Terra gives 2X more usage quota than GPT-6.1 Sol across both subscriptions and API while excelling at computer use, UI implementation, and nuanced instruction following. Make Terra your default daily driver.

## Key Specifications

| Specification | Value |
| --- | --- |
| GPT-6.1 Terra Quota Multiplier | 2X more usage vs. GPT-6.1 Sol |
| Core Strengths | Computer Use, Nuanced Requests, Full-Stack |
| Recommended Task Share | 85% Terra / 15% Sol |
| Source Signal | @thsottiaux Day 22 Official Ship |

## Frequently Asked Questions

### Q: Does the 2X usage multiplier apply to ChatGPT Plus/Pro/Team subscriptions as well as API?

Yes. Tibo explicitly confirmed that GPT-6.1 Terra grants 2X more usage than 6.1 Sol across both API and subscriptions.

## Related Resources

- [Codex 429 & Banked Reset Strategy](https://tibosay.com/blog/codex-429-quota-and-banked-reset-strategy)
- [AGENTS.md Token Optimization Playbook](https://tibosay.com/blog/codex-agents-md-token-optimization)
- [Live TiboSay Reset Radar & CLI](https://tibosay.com/cli)