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Scheduled for retirement on Jan 11, 2028. Still available at the prices below until then.

GPT-5.6 Terra

OpenAIReleased Jul 9, 2026KnowledgeFeb 2026
VisionTool useReasoningPrompt cachingStructured outputWeb search
Compare GPT-5.6 TerraCount tokens for GPT-5.6 Terra
Context
1.1M
Max output
128K
Serving providers
7
Cheapest input
$2.00 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.

Benchmarks

independent evaluations · source: ARC Prize and Artificial Analysis
Speed & latency
Output speed
132 t/s
tokens / second
Time to first token
133.98s
latency
Headline indices
Intelligence Index
42.1
of 100
Coding Index
76.7
of 100
Frozen Sep 9, 2026
Agentic Index
43.7
of 100
Frozen Sep 9, 2026
Individual benchmarks · click a row for effort variants
BenchmarkBest scoreEffortCost / task
APEX Agents39%default—
ARC-AGI-284%max$1.09
Automation Bench0.6default—
CritPt30%default—
GDPval v2Frozen Aug 18, 20261576.3default—
GPQA Diamond93%default—
Harvey Lab0.9default—
Humanity's Last Exam43%default—
IFBench71%default—
IT-Bench SRE51%default—
Long-Context Reasoning83%default—
Mlcr OverallFrozen Sep 9, 20260.3default—
MMMU-Pro81%default—
Omniscience0.1default—
Omniscience Accuracy0.5default—
Omniscience Non Hallucination0.1default—
SciCode55%default—
Terminal Bench400.4default—
TerminalBench Hard63%xhigh—
TerminalBench v2.188%default—
τ-bench Banking40%default—
τ²-bench86%default—
Artificial Analysis last published scores for this benchmark on Sep 9, 2026. Scores here are frozen at that date, and models released since are not on it.
Artificial Analysis last published scores for this benchmark on Aug 18, 2026. Scores here are frozen at that date, and models released since are not on it.

Pricing detail

cost beyond the standard rate · source: models.dev
Long context (>200K)
$4.00 / $18.00
input / output · per 1M

Pricing by serving provider

standard tier · per 1M tokens · click a provider to expand

Input pricing runs from $2.00 to $2.50 per 1M tokens across 7 providers, so the dearest route costs 25% more than the cheapest for the same model.

Serving providerInput /1MOutput /1MEndpoints
Aihubmix$2.00$12.001
Azure$2.00$12.001
Amazon Bedrock$2.00$12.001
OpenAICheapest$2.00$12.001
Standardgpt-5.6-terra
ComponentUnitStandardBatch
Text cached in/1M tok$0.20—
Text cache write/1M tok$2.50—
Text input/1M tok$2.00$1.00
Text output/1M tok$12.00$6.00
OpenRouter$2.00$12.001
VercelVercel reseller quote$2.00$12.001
Databricks$2.50$15.001
OpenRouter (batch)$1.00$6.001
Vercel is dearest at $4.00 / $24.00

Price history

listed seller prices, input and output per 1M tokens
Input Output
Input down 20% since first tracked
$0.00$5.00$10.00$15.00Jul 10Jul 31Aug 28Sep 16$12.00$2.00

Cost calculator

estimate your monthly spend on this model
$1,360
estimated / month

Model IDs

copy the exact identifier for your platform
openai/gpt-5.6-terra:batchopenai/gpt-5.6-terragpt-5.6-terraazure/gpt-5.6-terraglobal.openai.gpt-5.6-terraopenai/gpt-5.6-terraaihubmix/gpt-5.6-terraopenai/gpt-5.6-terradatabricks/databricks-gpt-5-6-terraopenai/gpt-5.6-terra-fastopenai/gpt-5.6-terraopenai/gpt-5.6-terra

Frequently asked questions

GPT-5.6 Terra pricing, context and availability

Is GPT-5.6 Terra still available?

Yes. GPT-5.6 Terra is scheduled for retirement on 2028-01-11.

How much does GPT-5.6 Terra cost?

GPT-5.6 Terra costs $2.00 per 1M input tokens from OpenAI, and $12.00 per 1M output tokens from OpenAI. Across 7 serving providers, input prices range from $2.00 to $2.50 per 1M tokens.

What is the context window of GPT-5.6 Terra?

GPT-5.6 Terra accepts up to 1.1M tokens of context and can return up to 128K output tokens.

Which providers serve GPT-5.6 Terra?

GPT-5.6 Terra is available from 7 serving providers, each with its own pricing and model ID. OpenAI is currently the cheapest.

What can GPT-5.6 Terra do?

GPT-5.6 Terra supports image input (vision), tool use, reasoning, prompt caching, structured output and web search.

Other OpenAI models

compare pricing across the OpenAI lineup
gpt-oss-120b$0.03/1M · 23 providersgpt-oss-20b$0.0145/1M · 15 providersGPT-5 Mini$0.25/1M · 9 providersGPT-5$1.25/1M · 9 providersGPT-5 Nano$0.05/1M · 8 providersGPT-5.6 Luna$0.20/1M · 7 providersGPT-4o-mini$0.15/1M · 6 providersGPT-5.4 Nano$0.20/1M · 6 providers
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

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