GPT-5.6 Sol API Cost Calculator

OpenAI's GPT-5.6 Sol: $5/M input · $30/M output · $0.5/M cached input. Price your own workload below.

Presets:

What GPT-5.6 Sol costs in practice

WorkloadInputOutputCost
Short chat message500250$0.010
10-page document + summary7,000500$0.050
Agent / coding session50,00010,000$0.550
1M tokens in + 1M out1,000,0001,000,000$35.00

GPT-5.6 Sol vs nearest rivals

Closest-priced alternatives on a mixed 10K-input / 2K-output request:

ModelInput $/MTokOutput $/MTokMixed request
GPT-5.6 Sol$5$30$0.110
Gemini 3.1 Pro Preview$2$12$0.044
Claude Opus 5$5$25$0.100
Claude Opus 4.8$5$25$0.100

Frequently asked questions

How much does the GPT-5.6 Sol API cost?

GPT-5.6 Sol costs $5 per million input tokens and $30 per million output tokens, with cached input at $0.5 per million (90% off).

How much does a typical chat message cost with GPT-5.6 Sol?

A short chat message (about 500 input and 250 output tokens) costs roughly $0.010 with GPT-5.6 Sol. At 1,000 such requests a day, that is about $300.00 per month.

Is GPT-5.6 Sol cheap compared to similar models?

GPT-5.6 Sol has the #23 cheapest input rate of the 26 models we track. On a mixed workload (10K input / 2K output), it costs $0.110 per request, versus $0.044 for Gemini 3.1 Pro Preview.

Related

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Last updated 2026-08-03. Prices verified againstOpenAI's official pricing page; see themethodology.