OpenAI: GPT-5.5 Pro
OpenAI
Capabilities
Strengths
- Exceptional reasoning and complex problem-solving with extended thinking
- Industry-leading 1M+ context window for long-document processing
- Strong multimodal capability across text, vision, and structured outputs
- Excellent performance on high-stakes analytical and creative tasks
Weaknesses
- Highest pricing tier limits accessibility for cost-sensitive use cases
- Speed unknown; extended thinking likely causes latency on complex tasks
- Closed-source weights prevent local deployment or fine-tuning
- No public sustainability or training data transparency
Pricing
Input / 1M tokens
$30
Output / 1M tokens
$180
Context window
1,050k
Transparency
Open weights
0.0 / 10
Open training data
0.0 / 10
Open methodology
2.5 / 10
Licence openness
1.0 / 10
Provider disclosure
3.5 / 10
FMTI company score
N/A
Closed-source model with limited public methodology disclosure. OpenAI publishes some research but does not disclose training data, weights, or detailed architectural choices. Transparency baseline reflects industry-standard proprietary positioning.
Sustainability
Inference energy
N/A
Training footprint
N/A
Provider infrastructure
5.5 / 10
OpenAI's sustainability practices are not well-documented publicly. No clear commitments to renewable energy or carbon-neutral inference. Large model size and high compute costs suggest substantial energy footprint, but exact metrics unavailable.