Home › Compare › AionLabs: Aion 3.5 vs Anthropic: Claude Opus 5.5
AionLabs: Aion 3.5 vs Anthropic: Claude Opus 5.5: API Pricing Compared
Comparing AionLabs: Aion 3.5 and Anthropic: Claude Opus 5.5: on combined input+output list price, AionLabs: Aion 3.5 is cheaper at $9 vs $24 per 1M tokens — a difference of $15 (62%). AionLabs: Aion 3.5 costs $3 in / $6 out with a 262,144-token context; Anthropic: Claude Opus 5.5 costs $4 in / $20 out with a 1,000,000-token context.
| AionLabs: Aion 3.5 | Anthropic: Claude Opus 5.5 | |
|---|---|---|
| Input /1M | $3 | $4 |
| Output /1M | $6 | $20 |
| Cached input /1M | $0.75 | $0.2 |
| Context window | 262,144 | 1,000,000 |
| Max output tokens | 32,768 | 128,000 |
| Cost @ 10M in + 2M out / mo | $42 | $80 |
Estimate your own workload in the cost calculator, or open the full pages for AionLabs: Aion 3.5 and Anthropic: Claude Opus 5.5.
Frequently asked questions
Which is cheaper, AionLabs: Aion 3.5 or Anthropic: Claude Opus 5.5?
AionLabs: Aion 3.5 is cheaper on combined list price: $9 vs $24 per 1M tokens (input + output). At 10M input + 2M output tokens per month, AionLabs: Aion 3.5 costs $42 and Anthropic: Claude Opus 5.5 costs $80.
Which has the larger context window, AionLabs: Aion 3.5 or Anthropic: Claude Opus 5.5?
AionLabs: Aion 3.5 has a context window of 262,144 tokens; Anthropic: Claude Opus 5.5 has 1,000,000 tokens. The larger one is Anthropic: Claude Opus 5.5.
Price snapshot October 21, 2026, refreshed daily.