OFFICIAL MODEL PROFILE

GPT-5.6 Terra

Catalog entry documented by the provider, with clearly scoped public ranking signals.

OpenAIAssumption · GPTPublic evidence · General availability · Aging
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Official model ID

gpt-5.6-terra

Public evidence · General availability · Aging
Provider
OpenAI
Model family
GPT
Release generation
Assumption · Current generation
Catalog status
Public evidence · General availability · Aging
Automatically verified
Oct 1, 2026
Lifecycle last verified
Lifecycle source
Lifecycle source
Lifecycle evidence
The linked official OpenAI catalog lists the exact model ID gpt-5.6-terra as currently available; account, region, product, and endpoint access can still vary.
Public evidence

Common family use cases

Assumption · Everyday work · Solve problems or code · Use current information or tools

Family limitations

Assumption · Closed weights and provider-controlled deployment.

Published ranking signals

Ranked configurations · 1

Verify the exact version before choosing: capabilities, price, context limits, latency, tools, and regional availability can differ by provider access path.

Assumption · OpenGPT catalog guidance

Best for

  • Day-to-day production work that needs a practical quality and efficiency trade-off.
  • Managed reasoning, coding, multimodal, and tool-connected workflows.

Strengths

  • The balanced role targets a practical middle ground between capability and operating efficiency.
  • GPT-5.6 Terra is provider-listed as the balanced release in its model family.

Weaknesses

  • General availability does not guarantee identical capabilities across every product, account, or endpoint.
  • Verify exact capabilities, pricing, latency, context limits, tools, and regional availability with the provider.

Alternatives

Assumption · These points are OpenGPT decision guidance derived from provider-confirmed family, catalog role, and lifecycle information. They are not measured results for this exact version. Verify capabilities, pricing, latency, context limits, tools, and regional availability with the provider.

Model family

Family-level guidance

The following summary describes the broader model family from official positioning. It is not a measured result for this exact version.

Assumption · Model family: GPT

GPT

A broad proprietary model family with a mature API and tool ecosystem.

Everyday workSolve problems or codeUse current information or toolsRead, analyze, or writeWork with images or audio
Catalog verification source ↗

Family strengths

Covers general, coding, vision, and tool-based workflows. Straightforward managed API with extensive developer tooling.

Family limitations

Closed weights and provider-controlled deployment. Cost, latency, and limits vary by exact model and service tier.

Verify the exact version before choosing: capabilities, price, context limits, latency, tools, and regional availability can differ by provider access path.

Provider documentation and OpenGPT catalog classification are labeled separately.

Version differences

Compare two catalog model IDs from one model family. Provider IDs, sources and published ranking signals are shown; OpenGPT catalog classification is labeled separately.
GPT-5.6 Terra / GPT-6 Astra
Version differencesGPT-5.6 TerraGPT-6 Astra
Official model IDgpt-5.6-terragpt-6-astra
Directory statusPublic evidence · General availability · AgingHistorical · Not automatically certified
OpenGPT catalog roleAssumption · BalancedAssumption · Flagship
Current public ranking signals——
Provider sourceOpenAI ↗OpenAI ↗
Model detailsModel details →Model details →

No verified feature-difference data is available. OpenGPT does not infer speed, price, context length, or quality.

OFFICIAL MODEL PROFILE

Official resources

These links go to the provider. Availability and the selectable version can vary by product, account, region, and endpoint.

OFFICIAL MODEL PROFILE

Published ranking signals

Each row preserves one published metric and source. Scores from different sources are not interchangeable.

1

User preference

Ranked configurationsLMArena #45 · xHigh ↗ · Not the current configuration’s rank
Source and configuration

These ranks belong to the listed evaluation configurations, not the current configuration or measured quality on your task.

gpt-5.6-terra-xhigh · Text · Style control · OverallSource ↗
snapshot:8361fb781955a675a1d6766d3baafd383abd211caf1b589972affe35c9368f0a