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OpenAI: GPT-6 Sol Pro API Pricing

OpenAI: GPT-6 Sol Pro is an API model from openai. It costs $2 per 1M input tokens and $10 per 1M output tokens, with cached input at $0.2. Its context window is 1,050,000 tokens with up to 128,000 output tokens. A workload of 10M input + 2M output tokens costs about $40 per month.
Input
$2
per 1M tokens
Output
$10
per 1M tokens
Cached input
$0.2
per 1M tokens
Context window
1.05M
1,050,000 tokens
Blended (80/20)
$3.6
per 1M tokens

GPT-6 Sol Pro is the same underlying model as [GPT-6 Sol](https://openrouter.ai/openai/gpt-6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

How much does OpenAI: GPT-6 Sol Pro cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: GPT-6 Sol Pro costs about $40 ($20 input + $20 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to OpenAI: GPT-6 Sol Pro?

Where to run OpenAI: GPT-6 Sol Pro

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

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Compare OpenAI: GPT-6 Sol Pro with other models

OpenAI: GPT-6 Sol Pro vs OpenAI: gpt-oss-20bOpenAI: GPT-6 Sol Pro vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-6 Sol Pro vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-6 Sol Pro vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-6 Sol Pro vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-6 Sol Pro vs OpenAI: GPT-6 Luna Pro (batch)

Frequently asked questions

How much does OpenAI: GPT-6 Sol Pro cost?

OpenAI: GPT-6 Sol Pro costs $2 per 1M input tokens and $10 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $40.

What is the context window of OpenAI: GPT-6 Sol Pro?

OpenAI: GPT-6 Sol Pro has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.

What are cheaper alternatives to OpenAI: GPT-6 Sol Pro?

Cheaper models include Z.ai: GLM 5.3 Prime ($2.8 in / $8.8 out), OpenAI: GPT-5.1-Codex-Max ($1.25 in / $10 out), OpenAI: GPT-5.1 ($1.25 in / $10 out). See the full list on this page.

Is OpenAI: GPT-6 Sol Pro free to use?

No. OpenAI: GPT-6 Sol Pro is a paid model at $2 input / $10 output per 1M tokens. 21 free models are listed on the free models page.

Provider: openai · Model ID: openai/gpt-6-sol-pro · Modality: text+image+file->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices