OpenAI / openai/gpt-5.6-sol-pro

GPT-5.6 Sol Pro - access through LLMTR

GPT-5.6 Sol Pro is suited to quality-first work that uses Sol through Responses API reasoning.mode=pro in the OpenAI GPT-5.6 family. It supports a 1.05M context window, 128K max output, text/image input, prompt caching, and true max reasoning effort. This LLMTR wrapper is not a separate OpenAI native slug; it routes to the base GPT-5.6 model and enables pro mode in the request body by default.

Technical specifications

Canonical IDopenai/gpt-5.6-sol-pro
ProviderOpenAI
Context window1,050,000 tokens
OperationsRESPONSES
Modalitiestext, image

Pricing

A 6% platform margin applies to credit top-ups; model usage prices are not separately marked up.

OperationMetricUnitPrice
RESPONSESINPUT_TEXTPER_1M_TOKENS$5.00
RESPONSESCACHE_READPER_1M_TOKENS$0.500000
RESPONSESOUTPUT_TEXTPER_1M_TOKENS$30.00

Example usage

With existing OpenAI SDK flows, change only the base URL and model identifier.

curl https://llmtr.com/v1/chat/completions \
  -H "Authorization: Bearer llmtr-your_key" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-5.6-sol-pro","messages":[{"role":"user","content":"Hello"}]}'

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