GPT-5.6 Sol
OpenAI's previous reasoning model.
GPT-5.6 Sol is an OpenAI model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Facts
- Context window
- 1M tokens
- Input
- Text and images
- Thinking effort
- Adjustable, up to Extra high
- Speed
- Deliberate
- Available on
- All plans
- Intelligence rank at Vani
- #10
Based on data from Artificial Analysis (artificialanalysis.ai). The ranking is Vani's ordering of the models it offers and is not endorsed by Artificial Analysis. Source
Guide
Best for
- Research
- Coding
Compare with
- OpenAIGPT-5.6 Terra
GPT-5.6 Terra is an OpenAI model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Compare side by side - AnthropicClaude Opus 4.6
Claude Opus 4.6 is an Anthropic model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Compare side by side - Moonshot AIKimi K3
Kimi K3 is a Moonshot AI model with a 1M-token context window. It lets you choose how hard it thinks.
Compare side by side
For developers
Use this model on the Vani API with the OpenAI- or Anthropic-compatible endpoints. Prepaid API prices per 1M tokens:
- Model id
- openai/gpt-5.6-sol
- Input
- $2.80
- Output
- $14.00
- Cached input
- $0.28