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Compare models

Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. GPT-6 SolOpenAIRemove
  2. Grok STT 1.0xAIRemove
  3. Perceptron Mk1.5PerceptronRemove
  4. S1Fish AudioRemove

4 is the maximum. Remove one to add another.

gpt-6-sol vs grok-stt-1.0 vs perceptron-mk1.5 vs s1
AttributeGPT-6 Solgpt-6-solGrok STT 1.0grok-stt-1.0Perceptron Mk1.5perceptron-mk1.5S1s1
Pricing
Input$2.00 / 1M$0 / 1M$0.15 / 1M$0 / 1M
Output$10.00 / 1M$0 / 1M$1.50 / 1M$0 / 1M
Cache Write (5m)$2.00 / 1MNot applicable$0.15 / 1MNot applicable
Cache Write (1h)$2.00 / 1MNot applicable$0.15 / 1MNot applicable
Cache Read$2.00 / 1MNot applicable$0.15 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context1.1MN/A36.9KN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionYesNoNoNo
Function CallingYesNoNoNo
JSON ModeYesNoNoNo
StreamingYesNoYesNo
Catalogue
ProviderOpenAIxAIPerceptronFish Audio
Categorychatvoicechatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released—2026-07-232026-09-252026-07-29
Description
SummaryGPT-6 Sol is OpenAI's cost-efficient high-end model in the GPT-6 series, positioned between the flagship GPT-6 Astra and the fast GPT-6 Luna tier. It is designed for professional knowledge work, agentic coding, business workflow automation, and computer-use tasks, with particular strength in long-horizon software engineering across real-world codebases. GPT-6 Sol approaches Astra-level factual reliability at a significantly lower cost, while sharing its clear and concise communication style. This balance of capability, reliability, and efficiency makes it well suited for production agents, complex engineering workflows, and scalable professional applicationsxAI Grok STT 1.0 speech-to-text. Billed per second of audio.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.