OpenAI: GPT-5.1 (batch)

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5.

• Context window: 400,000 tokens
• Input: image, text, file
• Output: text
• Pricing: $0.625/M input tokens, $5/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.