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 | Perceptron Mk1.5perceptron-mk1.5 | GPT-5.6 Terragpt-5.6-terra |
|---|---|---|
| Pricing | ||
| Input | $0.15 / 1M | $2.00 / 1M |
| Output | $1.50 / 1M | $12.00 / 1M |
| Cache Write (5m) | $0.15 / 1M | $2.00 / 1M |
| Cache Write (1h) | $0.15 / 1M | $2.00 / 1M |
| Cache Read | $0.15 / 1M | $2.00 / 1M |
| Web Search | $0 / 1M | $0 / 1M |
| Context | ||
| Max context | 36.9K | 1M |
| Max output | N/A | N/A |
| Capabilities | ||
| Vision | No | Yes |
| Function Calling | No | Yes |
| JSON Mode | No | Yes |
| Streaming | Yes | Yes |
| Catalogue | ||
| Provider | Perceptron | OpenAI |
| Category | chat | chat |
| Charge type | Pay As You Go | Pay As You Go |
| Released | 2026-09-25 | — |
| Description | ||
| Summary | Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token. | GPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is designed for everyday coding, reasoning, and agentic workflows, delivering strong performance while balancing capability and cost. Offering near-flagship quality at approximately half the cost of Sol, GPT-5.6 Terra is well suited for production applications that require reliable reasoning, software development, and scalable agent execution. |