GPT-5.6 Terra

Released July 9, 2026 with the GPT-5.6 family. Terra is the balanced mid-tier: OpenAI positions it at near-GPT-5.5 quality for roughly half the price, with a ~1.05M-token context and 128K max output.

GPT-5.6 Terra strengths

• Near-flagship quality at mid-tier pricing
• Strong general reasoning and coding
• ~1.05M context / 128K max output
• Multimodal (text + image)
• Drop-in upgrade from GPT-5.4

Pricing & context

Cost guide: a typical call of about 10K input + 2K output tokens costs roughly $0.055 at list prices. Worth modelling against cheaper tiers before committing high-volume traffic.

When to choose GPT-5.6 Terra

GPT-5.6 Terra is best for most production apps wanting near-flagship quality at roughly half the flagship price. If you need maximum capability, step up to GPT-5.6 Sol; for high-volume work, drop to GPT-5.6 Luna.

GPT-5.6 Terra FAQ

How much does GPT-5.6 Terra cost?

GPT-5.6 Terra is priced at $2.50 per 1M input tokens and $15.00 per 1M output tokens (public API list price), with a ~1.05M-token context window. A typical 10K-input / 2K-output call costs roughly $0.055.

What is GPT-5.6 Terra best for?

GPT-5.6 Terra by OpenAI is best for most production apps wanting near-flagship quality at roughly half the flagship price.

How does GPT-5.6 Terra compare to GPT-5.6 Sol?

Terra is the balanced tier: it targets near-Sol quality at half the price ($2.50 / $15 vs $5 / $30). Sol adds maximum reasoning and Ultra subagent mode for the hardest tasks.

Is GPT-5.6 Terra multimodal?

Yes. GPT-5.6 Terra supports text and image input.

Tools that use GPT-5.6 Terra