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GPT-5.6 Sol API price — 3 gateways compared

Cheapest right now: OpenRouter at $2.00/MTok in — 2.0× cheaper than the priciest gateway.

OpenAI · from $2.00 per million input tokens · 2.0× spread between gateways · updated continually

Gateway	$ in /MTok	$ out /MTok	Context	Model ID
OpenRouter fees	$2.00	$10.00	1,050,000	openai/gpt-5.6-sol	use
Glama	$2.50	$15.00	1,050,000	openai/gpt-5.6-sol	use
Requesty	$4.00	$20.00	1,050,000	azure/gpt-5.6-sol@eastus2	use

Fees beyond the token price

OpenRouter: No markup on token prices (provider pass-through), but credit purchases cost 5.5% via card ($0.80 minimum) or 5% via crypto; BYOK usage above the monthly allowance is charged 5%. source

2026-08-27 requesty raised gpt-5.6-sol-output 11.1%: 18.0 → 20.0 usd_per_mtok
2026-08-27 requesty raised gpt-5.6-sol-input 11.1%: 3.6 → 4.0 usd_per_mtok
2026-08-23 requesty cut gpt-5.6-sol-output 33.3%: 27.0 → 18.0 usd_per_mtok
2026-08-23 requesty cut gpt-5.6-sol-input 20.0%: 4.5 → 3.6 usd_per_mtok
2026-08-21 openrouter cut openai-gpt-5.6-sol-output 33.3%: 15.0 → 10.0 usd_per_mtok
2026-08-21 openrouter cut openai-gpt-5.6-sol-input 20.0%: 2.5 → 2.0 usd_per_mtok
2026-08-18 openrouter listed openai-gpt-5.6-sol-output at 15.0 usd_per_mtok
2026-08-18 openrouter listed openai-gpt-5.6-sol-input at 2.5 usd_per_mtok
2026-08-17 openrouter delisted openai-gpt-5.6-sol-output
2026-08-17 openrouter delisted openai-gpt-5.6-sol-input

The cheapest tracked gateway charges $2.00 per million input tokens and $10.00 per million output tokens (OpenRouter). Prices refresh continually.

OpenRouter for input tokens and OpenRouter for output tokens, among the 3 gateways we track.

Yes — the most expensive tracked gateway charges 2.0× the cheapest for input tokens. Identical model, identical tokens, different bill.