New from OpenAI

GPT-5.6 online: Sol, Terra and Luna, pay per use

OpenAI's GPT-5.6 family arrived on July 9, 2026 in three tiers: Sol for frontier reasoning and long agent runs, Terra for balanced everyday work, and Luna for fast, cheap replies. On avots.ai you run all three pay per use, no subscription, and the same balance also covers Claude Opus 5, Gemini, Kimi K3 and 40+ image, video and music models.

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Three tiers

Sol, Terra, Luna: which GPT-5.6 to pick

 SolTerraLuna
Best forfrontier reasoning, long agentsbalanced everyday workfast, high volume, cheap
Price per 1M in / out$5 / $30$2.5 / $15$1 / $6
Context window1M tokens1M tokens1M tokens
Visionyesyesyes
On avots.aipay per usepay per usepay per use

The number is the generation, the name is the tier: pick Sol for the hardest reasoning and agent runs, Terra for everyday quality at a fair price, Luna when speed and volume matter more than depth. Switch freely, one balance covers all three.

What is new

What GPT-5.6 brings

Top of Agents' Last Exam

Sol set a new high on real professional workflows across 55 fields, ahead of Claude Fable 5.

1M token context

All three tiers read about a million tokens and up to 128k output, with a February 2026 knowledge cutoff.

Programmatic tool calling

The model writes JavaScript that runs in an isolated sandbox, so agents chain tools without extra round trips.

Predictable caching

Explicit cache breakpoints and a 30 minute cache life make long, repeated prompts cheaper and steadier.

Three steps

How to use GPT-5.6

Create an account

Sign up on app.avots.ai with email, Google or Telegram. Takes a minute.

Top up from 0.99 EUR

1,000 tokens cost 0.99 EUR. No plan to choose, no renewal, the balance sits there until you use it.

Pick Sol, Terra or Luna

Choose a GPT-5.6 tier in the model picker, or let Agent Avots route for you. Every reply shows its token cost.

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One balance

Where you can use GPT-5.6

Web app

app.avots.ai on desktop and mobile, no install needed.

Telegram

GPT-5.6 in @AvotsAIbot, same balance, from any phone.

MCP

Use it inside Claude Desktop, Cursor or Cline via the MCP server.

Try GPT-5.6 for under a euro

1,000 tokens cost 0.99 EUR and Luna replies cost a handful of them. The same balance unlocks Sol and Terra, plus Claude Opus 5, Gemini, Kimi K3, Veo video and Nano Banana images.

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Guides

Related pages

Kimi K3

Moonshot's frontier open model, number one at coding, 1M context.

GPT-5 Image

OpenAI's image model for generations and edits. Live now.

avots.ai runs 40+ AI models for chat, image, video and audio on one balance. See the full list on the Tools page or open the app and start creating.

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FAQ

GPT-5.6 questions

What are GPT-5.6 Sol, Terra and Luna?
In GPT-5.6 the number is the generation and Sol, Terra and Luna are capability tiers. Sol is the top model for frontier reasoning and long agent runs, Terra balances quality, speed and cost for everyday work, and Luna is the fastest and cheapest. All three share a 1 million token context window and vision.
How much does GPT-5.6 cost on avots.ai?
Pay per use, no subscription. Per million tokens: Sol is 5 USD input and 30 USD output, Terra is 2.5 and 15, Luna is 1 and 6. Top up from 0.99 EUR and every reply shows its token cost before you run.
What is GPT-5.6 best at?
Long horizon agent work and coding. Sol set a new high on Agents' Last Exam, an evaluation of real professional workflows across 55 fields, and scores strongly on Terminal-Bench. GPT-5.6 also adds programmatic tool calling, running model-written JavaScript in an isolated sandbox, and more predictable prompt caching.
Is it the real OpenAI GPT-5.6?
Yes. avots.ai routes to OpenAI's GPT-5.6 Sol, Terra and Luna through official APIs. Same models and weights, pay per use instead of a monthly plan.
Can I use GPT-5.6 with Claude and Kimi on one balance?
Yes. One balance covers 40+ models: GPT-5.6, Claude Opus 5, Gemini, Kimi K3 and DeepSeek for chat, plus Veo, Sora and Nano Banana for media. Use them in the web app, Telegram, MCP or the API.
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