Cheapest previous generation AI
Previous generation models
Rule: Sorted by listed input price per 1M tokens, lowest first, then by output price. Models with no listed price are left out.
| # | Name | Listed price | ||
|---|---|---|---|---|
| 1 |  Gemini 2.5 Flash-LiteGoogle | $0.10 / $0.40 | ||
| 2 | GLM-4.5-AirZ.ai | $0.20 / $1.10 | ||
| 3 | Gemini 2.5 FlashGoogle | $0.30 / $2.50 | ||
| 4 | GLM-4.7Z.ai | $0.60 / $2.20 | ||
| 5 | Kimi K2.6Moonshot AI | $0.95 / $4 | ||
| 6 | GLM-5Z.ai | $1 / $3.20 | ||
| 7 |  Claude Haiku 4.5Anthropic | $1 / $5 | ||
| 8 | Gemini 2.5 ProGoogle | $1.25 / $10 | ||
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| 9 | Claude Sonnet 5Anthropic | $2 / $10 | ||
| 10 | Claude Sonnet 4Anthropic | $3 / $15 | ||
| 11 | Claude Sonnet 4.5Anthropic | $3 / $15 | ||
| 12 | Claude Sonnet 4.6Anthropic | $3 / $15 | ||
| 13 | Claude Opus 4.5Anthropic | $5 / $25 | ||
| 14 | Claude Opus 4.6Anthropic | $5 / $25 | ||
| 15 | Claude Opus 4.7Anthropic | $5 / $25 | ||
| 16 | Claude Opus 4.8Anthropic | $5 / $25 | ||
| 17 | Claude Opus 5Anthropic | $5 / $25 | ||
| 18 | Claude Opus 4Anthropic | $15 / $75 | ||
| 19 | Claude Opus 4.1Anthropic | $15 / $75 | ||
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Questions
What is the cheapest previous generation model
Gemini 2.5 Flash-Lite, at $0.10 / $0.40 per 1M tokens in / out, by listed price.