## OpenAI API pricing

Pricing page: https://openai.com/api/pricing/. Verified 2026-10-23.
Lock-in: Low to medium: the API is simple to swap, but prompts, tool definitions and output quality need re-testing on another model.

### GPT-6 Luna (`gpt-6-luna`): $0/month base
- Input tokens (per million): 0 included; then: $0.1 per 1,000
- Output tokens (per million): 0 included; then: $0.5 per 1,000
- Includes: commercial_use, compliance.hipaa, compliance.gdpr_dpa, ai.text, ai.vision
- Not yet priced: cached input ($0.01 per million), Batch API (50% off), data residency (+10%), HIPAA: accept the BAA in the API Platform settings once the organisation is eligible (or email baa@openai.com); check the HIPAA-eligible products list
- Note: $0.10 input, $0.01 cached input and $0.50 output per million tokens. OpenAI's most efficient model for focused, high-volume tasks.

### GPT-6.1 Sol (`gpt-6-1-sol`): $0/month base
- Input tokens (per million): 0 included; then: $2 per 1,000
- Output tokens (per million): 0 included; then: $10 per 1,000
- Includes: commercial_use, compliance.hipaa, compliance.gdpr_dpa, ai.text, ai.vision
- Not yet priced: cached input ($0.10 per million), Batch API (50% off), data residency (+10%), HIPAA: accept the BAA in the API Platform settings once the organisation is eligible (or email baa@openai.com); check the HIPAA-eligible products list
- Note: $2.00 input, $0.10 cached input and $10.00 output per million tokens. Built for coding and agentic workflows.

### GPT-6 Astra (`gpt-6-astra`): $0/month base
- Input tokens (per million): 0 included; then: $10 per 1,000
- Output tokens (per million): 0 included; then: $50 per 1,000
- Includes: commercial_use, compliance.hipaa, compliance.gdpr_dpa, ai.text, ai.vision
- Not yet priced: contexts over 272K tokens, cached input ($1.00 per million), Batch API (50% off), data residency (+10%), HIPAA: accept the BAA in the API Platform settings once the organisation is eligible (or email baa@openai.com); check the HIPAA-eligible products list
- Note: $10.00 input, $1.00 cached input and $50.00 output per million tokens. OpenAI's most capable model. Prices are for contexts under 272K tokens.

**Sources**
- OpenAI API: verified 2026-10-23 (https://openai.com/api/pricing/)

Confidence: high.

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