---
title: "GPT-5.6 Sol — API access"
description: "GPT-5.6 Sol API pricing: official $5/$30 per 1M tokens, from $2/$12 with the apiToken.sale discount. OpenAI-compatible endpoint, one key, prepaid balance."
url: "https://apitoken.sale/models/gpt-5-6-sol"
language: "en"
---
# GPT-5.6 Sol

GPT-5.6 Sol is the flagship of the GPT-5.6 line — the strongest reasoning and agentic coding model on the OpenAI-compatible endpoint. Here is what it costs per token, and how to run it cheaper on the same key and balance.

- **Model ID:** `gpt-5.6-sol`
- **Tier:** Flagship
- **Context window:** 272K tokens
- **Max output:** 32K tokens
- **Official price (per 1M):** $5 input / $30 output
- **Your price (per 1M):** input $2 → $1.5, output $12 → $9 (60%–70% off)
- **Base URL:** `https://openai.api.apitoken.sale/v1` · **Endpoints:** `POST /v1/responses`, `POST /v1/chat/completions` (Authorization: Bearer)

## Best for

- Agentic coding in Codex CLI, opencode and OpenAI-compatible tools.
- Hard reasoning with adjustable effort, up to the max level.
- Long multi-turn sessions with cached-input pricing.

## Notes

- gpt-5.6 is a convenience alias of gpt-5.6-sol — the same model at the same price.
- Text and image input, text output. SSE streaming on both Responses and Chat Completions.
- Requests above 272K input tokens bill at OpenAI long-context rates: 2× input and 1.5× output on the whole request.

## Call it

```bash
curl https://openai.api.apitoken.sale/v1/responses \
  -H "Authorization: Bearer $APITOKEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-5.6-sol", "input": "Reply with exactly: connected"}'
```

## FAQ

**How much does the GPT-5.6 Sol API cost?**

Officially $5 per 1M input tokens and $30 per 1M output tokens, with cached input at $0.50. On apiToken.sale the same requests start 60% cheaper — from $2/$12 — and reach $1.50/$9 at the maximum 70% discount.

**What is the model ID for GPT-5.6 Sol?**

gpt-5.6-sol (gpt-5.6 is an alias of the same model). Use it with the OpenAI SDK, Codex CLI, opencode or any OpenAI-compatible tool pointed at https://openai.api.apitoken.sale/v1.

**Does the same key really work for GPT and Claude?**

Yes. One sk-pool key and one prepaid balance cover both surfaces: Anthropic Messages API for Claude models and the OpenAI-compatible API for GPT models. The same discount applies to both.

---
API reference: https://apitoken.sale/md/docs · All models: https://apitoken.sale/md/models