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OpenAI: GPT-5.6 Sol API Pricing
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...
How much does OpenAI: GPT-5.6 Sol cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: GPT-5.6 Sol costs about $80 ($40 input + $40 output). Try your own volumes in the cost calculator.
What is the official OpenAI: GPT-5.6 Sol price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $4 | $4 |
| Output /1M | $20 | $20 |
| Cached input /1M | $0.4 | $0.4 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
Promotional rate — OpenAI guarantees it at least through November 21, 2026.
What are cheaper alternatives to OpenAI: GPT-5.6 Sol?
- OpenAI: GPT-5.4 Image 2 — $8 in / $15 out per 1M
- OpenAI: GPT-5 Image — $10 in / $10 out per 1M
- OpenAI: GPT-4o (2024-05-13) — $5 in / $15 out per 1M
- OpenAI: GPT-4 Turbo (batch) — $5 in / $15 out per 1M
- Fireworks: Ember-1 — $3 in / $15 out per 1M
- Anthropic: Claude Sonnet 4.6 — $3 in / $15 out per 1M
Compare OpenAI: GPT-5.6 Sol with other models
OpenAI: GPT-5.6 Sol vs OpenAI: gpt-oss-20bOpenAI: GPT-5.6 Sol vs OpenAI: gpt-oss-20b (batch)OpenAI: GPT-5.6 Sol vs OpenAI: gpt-oss-120b (batch)OpenAI: GPT-5.6 Sol vs OpenAI: GPT-5 Nano (batch)OpenAI: GPT-5.6 Sol vs OpenAI: GPT-4.1 Nano (batch)OpenAI: GPT-5.6 Sol vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: GPT-5.6 Sol cost?
OpenAI: GPT-5.6 Sol costs $4 per 1M input tokens and $20 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $80.
What is the context window of OpenAI: GPT-5.6 Sol?
OpenAI: GPT-5.6 Sol has a context window of 1,050,000 tokens and can return up to 128,000 output tokens per response.
What are cheaper alternatives to OpenAI: GPT-5.6 Sol?
Cheaper models include OpenAI: GPT-5.4 Image 2 ($8 in / $15 out), OpenAI: GPT-5 Image ($10 in / $10 out), OpenAI: GPT-4o (2024-05-13) ($5 in / $15 out). See the full list on this page.
Is OpenAI: GPT-5.6 Sol free to use?
No. OpenAI: GPT-5.6 Sol is a paid model at $4 input / $20 output per 1M tokens. 20 free models are listed on the free models page.
What is the official price of OpenAI: GPT-5.6 Sol?
On openai's official pricing page (checked 2026-10-21), OpenAI: GPT-5.6 Sol is listed at $4 per 1M input tokens and $20 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/gpt-5.6-sol · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices