Model Comparison
GPT-5.6 Sol vs o1-miniWhich is better in 2026?
GPT-5.6 Sol significantly outperforms across most benchmarks. o1-mini is 2.1x cheaper per token.
Verdict: GPT-5.6 Sol vs o1-mini — which is better?
GPT-5.6 Sol (by OpenAI) and o1-mini (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
GPT-5.6 Sol outperforms in 1 benchmarks (GPQA), while o1-mini is better at 0 benchmarks. GPT-5.6 Sol significantly outperforms across most benchmarks.
On price, o1-mini is roughly 2.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.6 Sol also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose GPT-5.6 Sol if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Jul 2026
Choose o1-mini if…
- cost matters — it's about 2.1x cheaper per token
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.6 Sol outperforms in 1 benchmarks (GPQA), while o1-mini is better at 0 benchmarks.
GPT-5.6 Sol significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.6 Sol ($5.00/1M tokens) is 1.7x more expensive than o1-mini ($3.00/1M tokens).
For output processing, GPT-5.6 Sol ($30.00/1M tokens) is 2.5x more expensive than o1-mini ($12.00/1M tokens).
In conclusion, GPT-5.6 Sol is more expensive than o1-mini.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.6 Sol accepts 1,050,000 input tokens compared to o1-mini's 128,000 tokens. GPT-5.6 Sol can generate longer responses up to 128,000 tokens, while o1-mini is limited to 65,536 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.6 Sol supports multimodal inputs, whereas o1-mini does not.
GPT-5.6 Sol can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.6 Sol
o1-mini
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5.6 Sol was released on 2026-07-09, while o1-mini was released on 2024-09-12.
GPT-5.6 Sol is 22 months newer than o1-mini.
Jul 9, 2026
1 weeks ago
1.8yr newerSep 12, 2024
1.9 years ago
Knowledge Cutoff
When training data ends
GPT-5.6 Sol has a documented knowledge cutoff of 2026-02-16, while o1-mini's cutoff date is not specified.
We can confirm GPT-5.6 Sol's training data extends to 2026-02-16, but cannot make a direct comparison without o1-mini's cutoff date.
Feb 2026
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Provider Availability
GPT-5.6 Sol is available from OpenAI. o1-mini is available from OpenAI, Azure.
GPT-5.6 Sol
o1-mini
Outputs Comparison
Key Takeaways
GPT-5.6 Sol
View detailsOpenAI
o1-mini
View detailsOpenAI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against GPT-5.6 Sol and o1-mini side-by-side, then vote on the output you prefer.
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FAQ
Common questions about GPT-5.6 Sol vs o1-mini.