GPT-5.2 vs Solar Pro 3: side-by-side summary

GPT-5.2 and Solar Pro 3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.2, from OpenAI, has a 400,000-token context window and is priced at $1.75/M tokens input, $14/M tokens output on OpenRouter.

Solar Pro 3, from upstage, has a 131,072-token context window and is priced at $0.15/M tokens input, $0.60/M tokens output on OpenRouter.

Context window

• GPT-5.2: 400,000 tokens
• Solar Pro 3: 131,072 tokens

Price

• GPT-5.2: $1.75/M tokens input, $14/M tokens output
• Solar Pro 3: $0.15/M tokens input, $0.60/M tokens output

Provided by

• GPT-5.2: OpenAI
• Solar Pro 3: upstage

• GPT-5.2 model details, providers and pricing
• Solar Pro 3 model details, providers and pricing