GPT-6.1 Sol
A good performance / EU-hosting balance for a European company.
Overview
GPT-6.1 Sol was released on 29 September 2026, one week after GPT-6 Sol. According to OpenAI, it comes close to GPT-6 Astra on agentic coding, computer use and professional work, at one fifth of Astra's price. Pricing is unchanged from GPT-6 Sol at $2 input and $10 output per million tokens, and cached input drops to $0.10. The context window is 1.05 million tokens and output reaches 128,000 tokens. It is available through the API as gpt-6.1-sol, as well as in ChatGPT Work and Codex. Performance figures are OpenAI's own.
Skill profile
Not disclosed
Three independent measures
What people prefer, what the model can do, what the market uses. Each source has its biases and none is enough on its own: we show them side by side, never blended.
Strengths
- Very long context
Who is it for
- your data must stay in the EU
Access & availability
Key specifications
What it costs per month
Estimate from sourced API prices and a hardware tier for self-hosting. Assumptions are editable.
Assumptions: 36-month amortisation, 0.25 €/kWh, 22 days/month, 1 $ = 0.92 €. Excludes labour, software licences, redundancy.
nAIvigate Trust Index
What the vendor offers and documents for professional use in Europe. An undocumented criterion counts as zero and stays visible: the score rises when the vendor publishes, not when we assume.
18/20 criteria documented · 90 %
See the criteria▾
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[](https://naivigate.com/en/model/gpt-6-1-sol)Data & compliance
What we know, line by line, with source and date. These lines feed the Data and Enterprise families of the Trust Index above. GDPR compliance depends on your processing, not on the model alone.
| EU data residency | Not documented |
| Data processing agreement (DPA) | Yes |
| Transfer outside the EU | Depends on plan |
| Training on your data | No |
| Configurable retention | Yes |
| Zero Data Retention | Not documented |
| Self-hostable | No |
| Declared hosting | US/EU |
Quality of this card’s data
This score measures the quality of the data on this card: price, context, Elo, licence, documented, sourced and fresh. It measures neither the model nor its compliance: for that, see the Trust Index above.
3/6 documented · 1/6 primary sources
Advanced data · for expertsArchitecture, modalities, detailed cost, full benchmarks▾
| Arena Elo | — |
| MMLU | — |
| GPQA | — |
| HumanEval | — |
| SWE-Bench | — |
| MATH | — |