Price checkPer per million tokens
GPT-5.6 Luna (Economy)CustomGPT-5.6 Terra (Balanced)CustomGPT-5.6 Sol (Flagship)Custom
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All GPT-5.6 (Sol, Terra & Luna) Plans & Pricing

Plan Monthly Annual Best For
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GPT-5.6 Luna (Economy)

  • GPT-5.6 Luna: $1.00 input / $6.00 output per M tokens
  • Cached input: $0.10 per M tokens
  • Batch API: $0.50 input / $3.00 output per M tokens (50% off)

GPT-5.6 Terra (Balanced)

  • GPT-5.6 Terra: $2.50 input / $15.00 output per M tokens
  • Cached input: $0.25 per M tokens
  • Batch API: $1.25 input / $7.50 output per M tokens (50% off)

GPT-5.6 Sol (Flagship)

  • GPT-5.6 Sol: $5.00 input / $30.00 output per M tokens
  • Cached input: $0.50 per M tokens
  • Batch API: $2.50 input / $15.00 output per M tokens (50% off)
  • Sol Pro variant available to Pro and Enterprise ChatGPT users for the highest-quality results on complex tasks
See GPT-5.6 (Sol, Terra & Luna) Plans
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Quick Answer
Last verified:
Medium confidence

GPT-5.6 (Sol, Terra & Luna) costs $1 to $30 per per million tokens as of July 2026, with 3 plans available. Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: No free tier available

GPT-5.6 (Sol, Terra & Luna) offers 3 pricing tiers: GPT-5.6 Luna (Economy), GPT-5.6 Terra (Balanced), GPT-5.6 Sol (Flagship). The GPT-5.6 Terra (Balanced) plan is balanced cost and performance for production workloads.

Compared to other llm api providers software, GPT-5.6 (Sol, Terra & Luna) is positioned at the budget-friendly price point.

Last verified: | Sources: 3 pricing pages and reviews

How much does GPT-5.6 (Sol, Terra & Luna) cost?

GPT-5.6 (Sol, Terra & Luna) pricing starts at $1/per million tokens across 3 plans, with enterprise pricing available on request. Plans include GPT-5.6 Luna (Economy) (custom pricing), GPT-5.6 Terra (Balanced) (custom pricing), GPT-5.6 Sol (Flagship) (custom pricing).

GPT-5.6 (Sol, Terra & Luna) Pricing Overview

GPT-5.6 (Sol, Terra & Luna) has 3 pricing plans ranging from $1 to $30/per million tokens. The GPT-5.6 Luna (Economy) plan requires contacting sales for a custom quote and is designed for high-volume, cost-sensitive workloads needing gpt-5.6-generation quality. The GPT-5.6 Terra (Balanced) plan requires contacting sales for a custom quote and is designed for balanced cost and performance for production workloads. The GPT-5.6 Sol (Flagship) plan requires contacting sales for a custom quote and is designed for highest-capability tasks requiring frontier reasoning.

This pricing was last verified in July 19, 2026 from 3 independent sources.

See GPT-5.6 (Sol, Terra & Luna) Plans

GPT-5.6 costs from $1.00 per million input tokens (Luna) to $30.00 per million output tokens (Sol) as of July 2026. OpenAI's GPT-5.6 family launched July 9, 2026 with three models: Sol (flagship, $5/$30 per M tokens), Terra (balanced, $2.50/$15), and Luna (economy, $1/$6). Cached input tokens cost 90% less than standard input across all three, and the Batch API cuts rates in half for asynchronous workloads. ChatGPT Plus, Pro, Business, and Enterprise users can select among all three models with adjustable effort levels; Pro and Enterprise users also get access to Sol Pro.

Usage-Based Rates

Per-unit pricing for GPT-5.6 (Sol, Terra & Luna) API usage.

GPT-5.6 Luna (Economy)

Model Input Output Cached Per
gpt-5.6-luna $1.00 $6.00 $0.100 1M tokens
  • Cache writes billed at 1.25x the model's uncached input rate
  • Batch API offers 50% off standard rates for async workloads
  • GA July 9, 2026; rates unchanged from the June 25, 2026 preview

GPT-5.6 Terra (Balanced)

Model Input Output Cached Per
gpt-5.6-terra $2.50 $15.00 $0.250 1M tokens
  • 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)

Model Input Output Cached Per
gpt-5.6-sol $5.00 $30.00 $0.500 1M tokens
  • 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

How GPT-5.6 (Sol, Terra & Luna) Pricing Compares

Software Starting Price Top Price
GPT-5.6 (Sol, Terra & Luna) $1/per million tokens $30/per million tokens
Amazon Bedrock $0.07/per million tokens $75/per million tokens
Anyscale $0.15/per million tokens $5/per million tokens
Baidu ERNIE API $0.1/per million tokens $10/per million tokens
Cerebras Inference API $0.1/per million tokens $6/per million tokens
Cohere API $0.037/per million tokens $10/per million tokens

Browse all LLM API Providers pricing →

GPT-5.6 (Sol, Terra & Luna) Pricing FAQ

01 How much does GPT-5.6 cost per million tokens?

GPT-5.6 spans three models: Luna at $1.00 input / $6.00 output, Terra at $2.50 input / $15.00 output, and Sol at $5.00 input / $30.00 output, all per million tokens. Cached input tokens cost 90% less than standard input across all three models.

02 When did GPT-5.6 launch?

GPT-5.6 reached general availability on July 9, 2026, with pricing unchanged from its June 25, 2026 preview.

03 Who can access GPT-5.6 Sol?

ChatGPT Plus, Pro, Business, and Enterprise users can access GPT-5.6 Sol, Terra, and Luna with selectable effort levels. Pro and Enterprise users additionally get GPT-5.6 Sol Pro for the highest-quality results on complex tasks.

04 Does GPT-5.6 offer a Batch API discount?

Yes — OpenAI's Batch API processes GPT-5.6 requests asynchronously at 50% off standard per-token rates across all three models (Sol, Terra, Luna).

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