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GPT 5.6 Sol API pricing, benchmarks and specs | AshnaAI

OpenAI

GPT 5.6 Sol

GPT 5.6 Sol is the highest-capability GPT-5.6 variant for demanding coding and multimodal reasoning.

Try this model API docs

Model details

Model ID: gpt-5.6-sol
Provider: OpenAI
Modality: Text generation
Context window: 1,050,000 tokens
Input → output: Text / image → text
Released: Jul 9, 2026
Available on AshnaAI: Oct 3, 2026

Where this model fits

Best capabilities

Multi-step reasoning and complex instruction following
Tool calling and agent workflows
Image and document understanding
Web-connected research tasks

Best for

Complex analysis, planning, research, and high-stakes knowledge work
Tasks where response quality matters more than minimum latency
Agents that need to call APIs or execute multi-step workflows

Not ideal for

Ultra-low-cost, latency-sensitive, high-volume classification

Benchmarks

Source: OpenAI GPT-5.6

Terminal-Bench 2.188.8

Source: OpenAI GPT-5.6

Pricing (USD)

Limited-time 30% discount

Input / 1M tokens: $4.82$3.37
Output / 1M tokens: $24.1$16.87
Cached input / 1M: $0.482$0.337
Cache write / 1M: $6.02$4.22

Capabilities

reasoningSupported
toolsSupported
visionSupported
web searchSupported
filesSupported

Available regions

US East (N. Virginia)

us-east-1

Europe (Frankfurt)

eu-central-1

Asia Pacific (Mumbai)

ap-south-1

Multi-region and provider failover: Active

Requests automatically switch to another region or provider if one becomes unavailable.