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OpenAI: GPT-6 Sol Pro API Pricing
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?
- Z.ai: GLM 5.3 Prime — $2.8 in / $8.8 out per 1M
- OpenAI: GPT-5.1-Codex-Max — $1.25 in / $10 out per 1M
- OpenAI: GPT-5.1 — $1.25 in / $10 out per 1M
- OpenAI: GPT-5.1-Codex — $1.25 in / $10 out per 1M
- OpenAI: GPT-5 — $1.25 in / $10 out per 1M
- Google: Gemini 2.5 Pro — $1.25 in / $10 out per 1M
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 21, 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. 20 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 21, 2026, refreshed daily. How we collect prices