GPT-5.6 Terra (Reseller)

GPT-5.6 Terra via third-party reseller channels (Responses API, 272K tiered billing).

Input price: $1.00–$2.00
Output price: $6.00–$9.00
Context: 1.1M
Max output: 128K
Modalities: InputTextImageOutputText
Capability: 160 (#14 of 89)
Human preference: 1448
30-day uptime: —
Released: 2026-07-09
Knowledge cutoff: —

Providers

Providers that serve this model. With Auto, each request goes to the best available provider. Prices in USD per 1M tokens; stats cover the last 30 days.

AutoInput$1.00–$2.00Output$6.00–$9.00Cache read—Context1.1MMax output128KWe send each request to the best-priced healthy provider. You pay that provider’s price.Reseller (managed pool)Input$1.00–$2.00Output$6.00–$9.00Cache read—ChinaNo training

Pricing

All prices for this model, by service tier.

Input: $1.00; per 1M tokens
Output: $6.00; per 1M tokens
Cache write (5 min): $1.25; per 1M tokens

Prompt > 272K tokens

Input: $2.00; per 1M tokens
Output: $9.00; per 1M tokens
Cache write (5 min): $2.50; per 1M tokens

Make a request

Set your provider preferences, then copy the request. It reads your API key from OHMYGPT_API_KEY.

Keep conversations on one provider

Later turns reuse the provider’s prompt cache, which can lower cost and latency.

curl https://api.ohmygpt.com/v1/responses \
  -H "Authorization: Bearer $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "codex/gpt-5.6-terra",
    "input": "Hello"
  }'

Similar models

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

Better value: more capable, lower price
Pareto frontier
This model
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Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-02), 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 Terra (Reseller)This model

Capability: 160
Input: $1.00–$2.00
Output: $6.00–$9.00

Inkling

Capability: 149
Input: $1.00
Output: $4.05

DeepSeek V4 Pro 0423

Capability: 149
Input: $0.99–$2.31
Output: $1.9806–$4.84

Kimi K2.6

Capability: 151
Input: $1.045
Output: $4.40

Claude Haiku 4.5

Capability: 142
Input: $1.10
Output: $5.50

Human preference ratings are from the LMArena Text Arena (CC BY 4.0, as of 2026-10-28): Elo ratings from blind votes, on a different scale from capability scores. lmarena.ai/leaderboard/text