GPT-6.1 Sol
GPT-6.1 Sol is OpenAI's flagship tier in the GPT-6.1 family, listed on the official pricing page on October 28, 2026. Short context (up to 272K input tokens) is $2.00 input / $0.10 cached / $10.00 output per 1M tokens, and long context above 272K is $4.00 / $0.20 / $15.00. Batch and Flex are half price, Fast is double and short-context only, and Sol alone gets an Ultrafast tier at $12.00 / $0.60 / $60.00.
Best For
Strengths
- OpenAI's flagship API tier with 1.05M context
- Exclusive Ultrafast processing tier at $12.00 / $60.00
- Batch and Flex at half price
- Native multimodal input with 128K max output
Weaknesses
- Twice the price of GPT-6.1 Terra on input and output
- Long-context pricing doubles above 272K input tokens
- Fast and Ultrafast tiers cost 2x and 6x standard
Related Alternatives
GPT-6.1 Terra
Half the price in the same family
Claude Opus 5.5
Anthropic's comparable frontier tier
Frequently Asked Questions
What are the GPT-6.1 Sol processing tiers?
Standard is $2.00 input / $0.10 cached / $10.00 output per 1M tokens at short context and $4.00 / $0.20 / $15.00 above 272K input tokens. Batch and Flex are half the standard price. Fast is double and offers only the short-context tier. Ultrafast, available for gpt-6.1-sol only, is $12.00 / $0.60 / $60.00 short-context and $24.00 / $1.20 / $90.00 long-context.
Is GPT-6.1 Sol or Terra the better value?
Terra is 50% cheaper on input and output at short context ($1.00 / $5.00 versus $2.00 / $10.00). Sol is worth the premium when you need the Ultrafast processing tier, which Terra does not offer, or when long-context requests dominate your traffic and the gap between $2.00 and $1.00 per 1M input tokens still matters at scale.
See GPT-6.1 Sol's full record in our database
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