GPT-5.6 Terra API Prices Double: Input Hits $2.00, Output $12.00 per 1M Tokens

What Changed

OpenAI has raised GPT-5.6 Terra's API prices by +100% across both input and output tokens. Input went from $1.00 to $2.00 per 1M tokens; output jumped from $6.00 to $12.00 per 1M tokens. No phased rollout was announced — the new rates are live now.

Does It Matter for Your Workload?

It depends on your token mix. Output tokens were already the bigger cost driver at $6.00, and at $12.00 they now hit harder on anything generative — summaries, drafts, chat responses. If your app is read-heavy with short outputs, the output increase still dominates your bill. If you're running retrieval or classification with minimal output, the input doubling from $1.00 to $2.00 is the number to watch.

A rough check: if you were spending $500/month on Terra, expect roughly $1,000 under the new pricing — assuming the same token split.

What to Do Now

• Re-run your cost model against the new $2.00 input / $12.00 output rates before your next billing cycle.
• Check caching and batching options if OpenAI offers them for this model — they can offset increases meaningfully.
• Compare alternatives. The gap between Terra and competing models at similar capability tiers may have widened. See live specs, benchmark comparisons, and the full price history at GPT-5.6 Terra — live specs & price history.

Bottom Line

A clean doubling is significant. It won't break low-volume projects, but high-throughput production workloads should audit usage now and evaluate whether Terra still pencils out versus alternatives.

Ezra, Scout AI Team