GPT-5 vs GPT-6.1 Sol (Batch)

Lower and Larger mark one number at a time; they don’t rank the models. How well a model does depends on your task; see Benchmarks for measured results.

DetailGPT-5openai/gpt-5GPT-6.1 Sol (Batch)openai/gpt-6.1-sol-batch
Makeropenaiopenai
KindChatChat
Input per 1M tokens$1.3125$1.05 Lower
Cached input per 1M tokens$0.13125$0.0525
Cache write per 1M tokensSame as input$1.3125
Output per 1M tokens$10.50$5.25 Lower
Context window400,000 tokens1,050,000 tokens Larger
Max output128,000 tokens128,000 tokens
CapabilitiesReasoning, tool use, vision, file input, web search, fastReasoning, tool use, vision, file input
TakesText, image, pdfText, image, pdf
ReturnsTextText
Zero data retentionYes, on every providerNot on every provider
No training on requestsYes, on every providerYes, on every provider
Released2025-08-072026-09-29

Example costs

Example requests, priced at today’s rates with no cached input.

Example requestGPT-5GPT-6.1 Sol (Batch)
1,000 tokens in, 200 out$0.003413$0.0021
10,000 tokens in, 1,000 out$0.023625$0.01575
100,000 tokens in, 4,000 out$0.17325$0.126