GPT-6 Sol vs o3-pro
Comparing GPT-6 Sol and o3-pro across benchmarks, pricing, and capabilities.
OpenAI · OpenAI · Updated for 2026
Which is better?
GPT-6 Sol and o3-pro trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, GPT-6 Sol is roughly 8.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6 Sol also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-6 Sol
- cost matters — it's about 8.8x cheaper per token
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose o3-pro
- you want predictable pricing at $20.00/M input and $80.00/M output
At a glance
The differences that matter most.
Individual benchmarks
5 reported for GPT-6 Sol · 0 for o3-pro
GPT-6 Sol and o3-prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-6 Sol ($2.00/1M tokens) is 10.0x cheaper than o3-pro ($20.00/1M tokens).
For output processing, GPT-6 Sol ($10.00/1M tokens) is 8.0x cheaper than o3-pro ($80.00/1M tokens).
In conclusion, o3-pro is more expensive than GPT-6 Sol.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6 Sol accepts 1,050,000 input tokens compared to o3-pro's 200,000 tokens. GPT-6 Sol can generate longer responses up to 128,000 tokens, while o3-pro is limited to 100,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-6 Sol and o3-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-6 Sol
o3-pro
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-6 Sol was released on 2026-09-22, while o3-pro was released on 2025-06-10.
GPT-6 Sol is 16 months newer than o3-pro.
Sep 22, 2026
0 days ago
1.3yr newerJun 10, 2025
1.3 years ago
Knowledge Cutoff
When training data ends
GPT-6 Sol has a knowledge cutoff of 2026-04-20, while o3-pro has a cutoff of 2024-05-31.
GPT-6 Sol has more recent training data (up to 2026-04-20), making it potentially better informed about events through that date compared to o3-pro (2024-05-31).
Apr 2026
1.9 yr newerMay 2024
Provider Availability
GPT-6 Sol is available from OpenAI. o3-pro is available from OpenAI.
GPT-6 Sol
o3-pro
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6 Sol and o3-pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6 Sol vs o3-pro.