OpenAI model product
GPT-5.6-Terra
6 family, designed for workloads that balance intelligence and cost.
Updated Aug 12, 2026. Default version: GPT-5.6 Terra
LLMBoard score87.6GPT-5.6 Terra
Coverage80%44 benchmark families
Context window1.1MTokens
Official input price$2OpenAI API
GPT-5.6-Terra Specifications
Technical details for the model's default version.
- Version
- GPT-5.6 Terra
- Released
- Jul 9, 2026
- Knowledge cutoff
- Feb 16, 2026
- Parameters
- N/A
- Context window
- 1.1M
- Max output
- 128K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
GPT-5.6-Terra Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
GPT-5.6-Terra Benchmark Results
Benchmark scores for GPT-5.6 Terra.
GPT-5.6-Terra Arena Results
Preference and agent-evaluation results for the default version.
| agent tool hallucination | overall | 06 | 0.0 | N/A | 601.4K | |
| document style control | overall | 09 | 1482.3 | 1,969 | N/A | |
| document | overall | 10 | 1479.2 | 1,969 | N/A | |
| agent steerability | overall | 17 | 0.1 | N/A | 13.7K | |
| agent | overall | 18 | 0.0 | N/A | 646.1K | |
| agent bash recovery steps | overall | 18 | 0.1 | N/A | 17.9K | |
| agent praise complaint | overall | 21 | 0.0 | N/A | 3.4K | |
| webdev | overall | 22 | 1523.7 | 4,573 | N/A | |
| text factuality | overall | 29 | 1464.3 | 15,393 | N/A | |
| vision | overall | 29 | 1274.7 | 3,235 | N/A | |
| vision style control | overall | 29 | 1270.4 | 3,235 | N/A | |
| agent task outcome explicit | overall | 32 | -0.0 | N/A | 9.7K | |
| text style control | overall | 42 | 1465.0 | 15,421 | N/A | |
| text | overall | 44 | 1446.1 | 15,421 | N/A |
GPT-5.6-Terra Runtime Performance
Provider-specific output speed and catalog latency for GPT-5.6 Terra. Runtime does not affect the capability score.
| OpenAI | 86.691 tok/s | 2.184 s | 1.1M | 128K |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
GPT-5.6-Terra Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $2 input, $12 output per 1M
- Official provider
- OpenAI
- Lowest third-party
- From $1 input, $6 output per 1M via NanoGPT
- Tracked offerings
- 31
| Kenari | gpt-5-6-terra | global | N/A | N/A | 1.1M | |
| NanoGPT | openai/gpt-5.6-terra | global | $1 | $6 | 1.1M | |
| OpenRouter | openai/gpt-5.6-terra | global | $1 | $6 | 1.1M | |
| routing.run | gpt-5.6-terra | global | $1.5 | $9 | 1M | |
| Xpersona | gpt-5.6-terra | global | $1.5 | $2 | 372K | |
| Impossibl | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| CrossModel | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| LLM Gateway | gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| GitHub Copilot | gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| Ofox | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| Kilo Gateway | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| Kilo Gateway | openai/gpt-5.6-terra-pro | global | $2 | $12 | 1.1M | |
| Merge Gateway | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| Vercel AI Gateway | openai/gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| OpenAI | gpt-5.6-terra | global | $2 | $12 | 1.1M | |
| Amazon Bedrock | openai.gpt-5.6-terra | global | $2.2 | $13.2 | 1.1M | |
| Vivgrid | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| OpenCode Zen | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| Neon | gpt-5-6-terra | global | $2.5 | $15 | 1.1M | |
| Pioneer | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| AI-ROUTER | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| ZenMux | openai/gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| Abacus | gpt-5.6-terra | global | $2.5 | $15 | 1M | |
| Azure Cognitive Services | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| Azure | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| AIHubMix | gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| Cloudflare AI Gateway | openai/gpt-5.6-terra | global | $2.5 | $15 | 1.1M | |
| Databricks | databricks-gpt-5-6-terra | global | $2.5 | $15 | 1.1M | |
| Cortecs | gpt-5.6-terra | global | $2.75 | $16.5 | 1.1M | |
| Venice AI | openai-gpt-56-terra | global | $3.13 | $18.75 | 1M |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
GPT-5.6-Terra Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| GPT-5.6 Terra | 87.6 | N/A | 1.1M | 128K | No | Proprietary |
What is GPT-5.6-Terra?
Key information about GPT-5.6-Terra and its available data.
6 family, designed for workloads that balance intelligence and cost. 05M-token context window.
Data as of 2026-08-11.
GPT-5.6-Terra vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
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FAQ
Common questions about GPT-5.6-Terra.
When was GPT-5.6-Terra released?
GPT-5.6-Terra's default version was released on Jul 9, 2026.
How much does GPT-5.6-Terra cost?
GPT-5.6-Terra's official API price is $2 per million input tokens and $12 per million output tokens via OpenAI. The lowest tracked third-party offer starts at $1 input and $6 output via NanoGPT.
Who created GPT-5.6-Terra?
GPT-5.6-Terra was created by OpenAI.
What is the context window for GPT-5.6-Terra?
The default version has a 1.1M token context window.
Is GPT-5.6-Terra open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer GPT-5.6-Terra?
31 provider offerings are linked to the default version.
What models should I compare GPT-5.6-Terra with?
Nearby ranked alternatives include Qwen3.8 Max, Muse Spark 1.1, Claude Opus 4.8.