GPT-5.6 (Sol, Terra & Luna) Pricing Calculator 2026
Estimate your total cost including hidden fees
The GPT-5.6 (Sol, Terra & Luna) calculator estimates the cost of your selected plan. Change the team size where pricing is per person, choose an available billing period, and add reported extras that apply to your contract.
Enter your requirements below to see the recurring cost and first-year total. Unverified extras are excluded.
- Plans: 3 tiers; $0.20–$30/per million tokens
- Conversation History Reprocessing: $5,000
- System Prompt Overhead: $400
- Infrastructure for Open-Source Models: exceeding $12 million
Reported extras may depend on your usage and contract. Confirm the final quote with GPT-5.6 (Sol, Terra & Luna).
GPT-5.6 (Sol, Terra & Luna) pricing ranges from $0.2 to $30 per per million tokens as of September 2026. GPT-5.6 (Sol, Terra & Luna) offers 3 pricing tiers. Reported extras are shown below. Only costs with a clear amount and billing basis can be added to the estimate. Pricing verified from 3 sources by CostBench.
Estimate Your Monthly Cost
Enter your expected monthly usage:
GPT-5.6 Luna (Economy)
- OpenAI reduced GPT-5.6 API pricing on July 30, 2026; rates here reflect the post-reduction schedule
- Cache writes billed at 1.25x the model's uncached input rate
- Batch API offers 50% off standard rates for async workloads
GPT-5.6 Terra (Balanced)
- OpenAI reduced GPT-5.6 API pricing on July 30, 2026; rates here reflect the post-reduction schedule
- Cache writes billed at 1.25x the model's uncached input rate
- Batch API offers 50% off standard rates for async workloads
GPT-5.6 Sol (Flagship)
- OpenAI reduced GPT-5.6 API pricing on July 30, 2026; rates here reflect the post-reduction schedule
- Cache writes billed at 1.25x the model's uncached input rate
- Batch API offers 50% off standard rates for async workloads
- ChatGPT Plus, Pro, Business, and Enterprise users access Sol, Terra, and Luna with selectable effort levels
- Sol promotional pricing is available at least through November 21, 2026
Compare at This Team Size
Frequently Asked Questions
01 How accurate is this GPT-5.6 (Sol, Terra & Luna) pricing calculator?
This calculator uses official GPT-5.6 (Sol, Terra & Luna) pricing data verified as of 2026-08-23. Hidden cost estimates are based on 12 verified cost categories from real user reports. Actual costs may vary based on negotiated discounts, specific feature requirements, and implementation complexity.
02 What hidden costs should I include in my GPT-5.6 (Sol, Terra & Luna) budget?
Our calculator includes 1 verified hidden cost categories for GPT-5.6 (Sol, Terra & Luna): Infrastructure for Open-Source Models. Toggle each to see how they affect your total cost.
03 Should I choose monthly or annual billing for GPT-5.6 (Sol, Terra & Luna)?
Compare the published annual total with twelve monthly payments when both are available. An annual commitment may reduce flexibility; confirm cancellation terms and whether the quoted plan fits your needs.
04 How do I know which GPT-5.6 (Sol, Terra & Luna) tier I need?
Start with your must-have features. GPT-5.6 (Sol, Terra & Luna) offers 3 tiers ranging from $0.2 to $30/per million tokens. Entry tiers work for basic needs, while enterprise tiers add advanced security, customization, and support.
05 Can I negotiate GPT-5.6 (Sol, Terra & Luna) pricing below calculator estimates?
Negotiated pricing depends on the vendor, plan and contract. We do not assume a discount in this estimate. See our negotiation guide for tactics.