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.
| Attribute | GPT-6 Luna Progpt-6-luna-pro | Perceptron Mk1.5perceptron-mk1.5 | Speech 2.8 HDspeech-2.8-hd |
|---|---|---|---|
| Pricing | |||
| Input | $0.10 / 1M | $0.15 / 1M | $0 / 1M |
| Output | $0.50 / 1M | $1.50 / 1M | $0 / 1M |
| Cache Write (5m) | $0.10 / 1M | $0.15 / 1M | Not applicable |
| Cache Write (1h) | $0.10 / 1M | $0.15 / 1M | Not applicable |
| Cache Read | $0.10 / 1M | $0.15 / 1M | Not applicable |
| Web Search | $0 / 1M | $0 / 1M | $0 / 1M |
| Context | |||
| Max context | 1.1M | 36.9K | N/A |
| Max output | N/A | N/A | N/A |
| Capabilities | |||
| Vision | Yes | No | No |
| Function Calling | Yes | No | No |
| JSON Mode | Yes | No | No |
| Streaming | Yes | Yes | No |
| Catalogue | |||
| Provider | OpenAI | Perceptron | MiniMax |
| Category | chat | chat | voice |
| Charge type | Pay As You Go | Pay As You Go | Pay As You Go |
| Released | — | 2026-09-25 | 2026-07-16 |
| Description | |||
| Summary | GPT-6 Luna Pro uses the same underlying model as GPT-6 Luna, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. It combines Luna's speed and cost efficiency with deeper reasoning and more reliable multi-step execution, making it well suited for advanced coding, computer use, and agentic workflows where higher solution quality is needed without moving to a larger GPT-6 tier. | Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token. | MiniMax Speech 2.8 HD text-to-speech. Billed per input character; each Chinese (Han) character counts as 2. |