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GPT-5.6 Terra

A balanced GPT-5.6 model for strong reasoning and coding performance at a lower price point.

Try in ChatCompare
Input price
$1.80–$3.60list $2.00-10%
Output price
$10.80–$16.20list $12.00-10%
Context
1.1M
Max output
128K
161 (#16 of 79)
1449
—
Released
2026-07-09
Knowledge cutoff
2026-02-16
InputTextImageOutputText

Providers

This model is served by the dedicated providers below. We pick the provider for each request, so provider preferences don’t apply, including a provider named in your request. Prices in USD per 1M tokens. Need a custom setup? Contact [email protected].

Included providers2
  • SuccessTTFT
  • Azure AI FoundryGlobal——
  • OpenAIUnited States——

Pricing

Prices for this model. Each request is billed at these prices, whichever provider serves it.

ItemStandardFlexBatchPriorityPrice
Prompt ≤ 272K tokens
Inputper 1M tokens$1.80list $2.00-10%$0.90list $1.00-10%$0.90list $1.00-10%$3.60list $4.00-10%—
Outputper 1M tokens$10.80list $12.00-10%$5.40list $6.00-10%$5.40list $6.00-10%$21.60list $24.00-10%—
Cache readper 1M tokens$0.18list $0.20-10%$0.09list $0.10-10%$0.09list $0.10-10%$0.36list $0.40-10%—
Cache write (5 min)per 1M tokens$2.25list $2.50-10%$1.125list $1.25-10%$1.125list $1.25-10%$4.50list $5.00-10%—
Cache write (1 hour)per 1M tokens$4.50list $5.00-10%$2.25list $2.50-10%$2.25list $2.50-10%$9.00list $10.00-10%—
Prompt > 272K tokens
Inputper 1M tokens$3.60list $4.00-10%$1.80list $2.00-10%$1.80list $2.00-10%$7.20list $8.00-10%—
Outputper 1M tokens$16.20list $18.00-10%$8.10list $9.00-10%$8.10list $9.00-10%$32.40list $36.00-10%—
Cache readper 1M tokens$0.36list $0.40-10%$0.18list $0.20-10%$0.18list $0.20-10%$0.72list $0.80-10%—
Cache write (5 min)per 1M tokens$4.50list $5.00-10%$2.25list $2.50-10%$2.25list $2.50-10%$9.00list $10.00-10%—
Cache write (1 hour)per 1M tokens$9.00list $10.00-10%$4.50list $5.00-10%$4.50list $5.00-10%$18.00list $20.00-10%—
Web searchper request————$0.009list $0.01-10%

Try it

Runs on your balance and is billed like any API request.

Provider preferences don’t apply to this model. Need a custom setup? Contact [email protected].

Accepts images, or paste them in

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The answer streams in here.

Billed by usage

Similar models

Other models with the same output types at a similar price.

  • Better value: more capable, lower price
  • Pareto frontier
  • Similar models

Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-10), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

GPT-5.6 TerraThis model
161
Input
$1.80–$3.60
Output
$10.80–$16.20
—
Input
$1.80
Output
$9.00
169
Input
$1.80–$3.60
Output
$9.00–$13.50
156
Input
$1.65
Output
$4.951
—
Input
$1.65
Output
$8.25

Human preference ratings are from the LMArena Text Arena (CC BY 4.0, as of 2026-11-09): Elo ratings from blind votes, on a different scale from capability scores. lmarena.ai/leaderboard/text