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AionLabs: Aion 3.5 vs OpenAI: GPT-6.1 Sol Pro: API Pricing Compared
Comparing AionLabs: Aion 3.5 and OpenAI: GPT-6.1 Sol Pro: on combined input+output list price, AionLabs: Aion 3.5 is cheaper at $9 vs $12 per 1M tokens — a difference of $3 (25%). AionLabs: Aion 3.5 costs $3 in / $6 out with a 262,144-token context; OpenAI: GPT-6.1 Sol Pro costs $2 in / $10 out with a 1,050,000-token context.
| AionLabs: Aion 3.5 | OpenAI: GPT-6.1 Sol Pro | |
|---|---|---|
| Input /1M | $3 | $2 |
| Output /1M | $6 | $10 |
| Cached input /1M | $0.75 | $0.1 |
| Context window | 262,144 | 1,050,000 |
| Max output tokens | 32,768 | 128,000 |
| Cost @ 10M in + 2M out / mo | $42 | $40 |
Estimate your own workload in the cost calculator, or open the full pages for AionLabs: Aion 3.5 and OpenAI: GPT-6.1 Sol Pro.
Frequently asked questions
Which is cheaper, AionLabs: Aion 3.5 or OpenAI: GPT-6.1 Sol Pro?
AionLabs: Aion 3.5 is cheaper on combined list price: $9 vs $12 per 1M tokens (input + output). At 10M input + 2M output tokens per month, AionLabs: Aion 3.5 costs $42 and OpenAI: GPT-6.1 Sol Pro costs $40.
Which has the larger context window, AionLabs: Aion 3.5 or OpenAI: GPT-6.1 Sol Pro?
AionLabs: Aion 3.5 has a context window of 262,144 tokens; OpenAI: GPT-6.1 Sol Pro has 1,050,000 tokens. The larger one is OpenAI: GPT-6.1 Sol Pro.
Price snapshot October 21, 2026, refreshed daily.