GPT-5.6 Terra Pro
by OpenAIChat
GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...
- Context
- 1.05M tokens
- Max output
- 128,000 tokens
- Released
- 2026-07-09
- Weights
- unknown
openai/gpt-5-6-terra-pro · also seen as openai/gpt-5.6-terra-pro:batch
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-07-09
- Weights
- unknown
- Input
- File, Image, Text
- Output
- Text
- Context window
- 1,050,000 max across endpoints
- Max output
- 128,000
- Providers
- 0 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $2.00 in at OpenRouter, via gateway, fees not verified
More details
- Last updated
- —
- Knowledge cutoff
- 2026-02-16
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoning
- Image inputunknown
- PDF inputunknown
- Audio inputunknown
- Audio outputunknown
- Video inputunknown
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperatureunknown
- Streamingunknown
- Attachmentsunknown
Endpoints
One row per provider and variant; gateways are listed separately.
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Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs GPT-5.6 Terra Pro |
|---|---|---|---|---|---|
| Deep Research Max Preview (Apr-21-2026)Google | $3.67 | $2.00 | $12 | 131K | +0% |
| Deep Research Preview (Apr-21-2026)Google | $3.67 | $2.00 | $12 | 131K | +0% |
| Gemini 3.1 Pro PreviewGoogle | $3.67 | $2.00 | $12 | 1.05M | +0% |
| Gemini 3.1 Pro Preview Custom ToolsGoogle | $3.67 | $2.00 | $12 | 1.05M | +0% |
| Gemini 3.1 Pro (Preview High)Google | $3.67 | $2.00 | $12 | 1.05M | +0% |
| Gemini 3.1 Pro (Preview Low)Google | $3.67 | $2.00 | $12 | 1.05M | +0% |
| Gemini 3.5 TranscribeGoogle | $3.67 | $2.00 | $12 | 98.3K | +0% |
| gemini 1.0 proGoogle | $3.67 | $2.00 | $12 | 1.05M | +0% |
More from OpenAI
Newest OpenAI models in the catalogue. All OpenAI models
| Model | Released | Context | Listed price |
|---|---|---|---|
| GPT-6.1 Sol Ultrafast | 2026-10-08 | 1.05M | from $12 |
| GPT-6 Luna Decisions | 2026-10-06 | 1.05M | unpriced |
| GPT-6.1 Sol | 2026-09-29 | 1.05M | from $2.00 |
| GPT-6.1 Sol Pro | 2026-09-29 | 1.05M | from $2.00 |
| GPT-6 Luna | 2026-09-22 | 1.05M | from $0.10 |
| GPT-6 Sol | 2026-09-22 | 1.05M | from $2.00 |
| GPT-6 Sol Pro | 2026-09-22 | 1.05M | from $2.00 |
| GPT-6 Luna Pro | 2026-09-22 | 1.05M | from $0.10 |
Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model