OpenAI · Strong all-rounder
Write fiction with GPT-6.1 Sol
Yes. On WriteWithPaige, writers on a paid plan can pick GPT-6.1 Sol, made by OpenAI, for any reply in their story. It reads your chapters and Story Bible and writes into your book, the same way Paige does. Each GPT-6.1 Sol reply uses credits: about 32–89 for a chat reply and about 40–112 for a new chapter. Paige stays the default and is included in every plan.
Updated October 23, 2026
GPT-6.1 Sol at a glance
- Made by
- OpenAI
- Released
- September 29, 2026(OpenAI: GPT-6.1 Sol system card)
- Context window
- About 1 million tokens (1,050,000)(OpenAI: GPT-6.1 Sol model docs)
- Group on WriteWithPaige
- Strong all-rounder
- Credits a reply
- About 32–89 for chat, 36–107 to continue, 40–112 for a new chapter
What OpenAI says: OpenAI describes it as near-Astra performance at a lower cost.(OpenAI: latest model guide)
What GPT-6.1 Sol is good at, and where it's weaker
Good for
- Close to GPT-6 Astra for much less, so it is a sensible everyday OpenAI choice.(OpenAI: latest model guide)
- It reads about a million tokens at once.(OpenAI: GPT-6.1 Sol model docs)
Weaker at
- In a blind style test, judges found Claude Opus 5.5 more varied and more metaphorical in almost every comparison.(Artificial Analysis: GPT-6.1 Sol vs Claude Opus 5.5)
- It always reasons before it writes, and The Batch measured it slower than the Sol model before it.(The Batch: GPT-6.1 Sol)
GPT-6.1 Sol or Paige?
Paige
Built for fiction and included in every plan. She knows the workspace best, runs Adventures, and writes the scenes you ask for within our content rules. No credits.
GPT-6.1 Sol
A second voice from OpenAI. Fast, sharp and clean. A great everyday choice. It follows OpenAI's content rules and uses about 32–89 credits a chat reply.
A simple way to choose: write with Paige, and when a scene stalls, ask GPT-6.1 Sol for the same scene. Keep the reply you like.
GPT-6.1 Sol compared with similar models
Same story, same workspace. These differ in voice, speed and credits.
| Model | Maker | Group | Best for in fiction | Context | Credits a replychat · continue · new chapter |
|---|---|---|---|---|---|
| GPT-6.1 Sol | OpenAI | Strong all-rounder | Fast, sharp and clean. A great everyday choice. | 1M tokens | 32–89 · 36–107 · 40–112 |
| Claude Opus 5.5 | Anthropic | Strong all-rounder | Careful with long stories and subtle character work. | 1M tokens | 63–177 · 72–214 · 79–223 |
| Gemini 4 Argon | Strong all-rounder | Strong all-rounder with a huge memory for long books. | 1M tokens | 32–89 · 36–107 · 40–112 | |
| Grok 4.7 | xAI | Strong all-rounder | Punchy voice, quick replies, happy to take creative risks. | 500K tokens | 32–90 · 35–107 · 35–107 |
Try GPT-6.1 Sol in three steps
- 1
Create a free account
Start with Paige on a real chapter.
- 2
Choose a paid plan
Other models are part of every paid plan. Paige stays included.
- 3
Pick GPT-6.1 Sol
Tap "Writing with: Paige" beside the chat box and choose GPT-6.1 Sol. Add credits when you need them: packs from US$10 (€10 in the eurozone) for 1,000 credits.
Frequently asked questions
Can I write a novel with GPT-6.1 Sol?
Yes. On WriteWithPaige, writers on a paid plan can pick GPT-6.1 Sol, made by OpenAI, for any reply in their story. It reads your chapters and Story Bible and writes into your book, the same way Paige does. Each GPT-6.1 Sol reply uses credits: about 32–89 for a chat reply and about 40–112 for a new chapter. Paige stays the default and is included in every plan.
How many credits does GPT-6.1 Sol use?
About 32–89 credits for a chat reply, 36–107 to continue a chapter, and 40–112 for a new chapter. The lower number is a typical reply; the higher one is a long reply deep into a big book, because the model reads more of your story. Every reply shows what it used. Credits come in packs from US$10 (€10 in the eurozone) for 1,000 credits.
Does GPT-6.1 Sol use my plan's daily messages?
No. Replies from GPT-6.1 Sol are paid with credits, so they don't count against Paige's daily allowance. Switch back to Paige and your plan works as before.
Will GPT-6.1 Sol write everything Paige writes?
Not always. GPT-6.1 Sol follows OpenAI's content rules, so it may turn down some requests or tone a scene down. A turned-down reply still uses credits. Paige is one tap away and is included in your plan.
Do I need a OpenAI account or API key?
No. You pick GPT-6.1 Sol inside WriteWithPaige and pay with credits. There is nothing to set up with OpenAI.
Is GPT-6.1 Sol better than Paige?
It depends on the scene. Paige is built for fiction, knows the workspace best and costs nothing extra. GPT-6.1 Sol gives you a second voice: try it on a scene you're stuck on and keep whichever reply you like. Adventures always run on Paige.
Keep exploring
All AI models
Every model you can write with, side by side, with credits per reply.
Claude Opus 5.5 vs GPT-6.1 Sol
Head-to-head for fiction writers.
Write fiction with Claude Opus 5.5
Careful with long stories and subtle character work.
Write fiction with Gemini 4 Argon
Strong all-rounder with a huge memory for long books.
Write fiction with Grok 4.7
Punchy voice, quick replies, happy to take creative risks.
AI fiction writer
How Paige drafts, continues and edits a novel with you.
Best AI tools for fiction
How the main AI writing tools compare for novelists.
Plans and pricing
What each plan includes. Paige comes with every plan.
Sources
Facts about each model come from its maker and the reviews below. Credit ranges come from WriteWithPaige. We don't publish our own benchmark scores.
Write your next chapter with GPT-6.1 Sol
Start free with Paige, choose a paid plan, then pick any model for any reply.
Start free