Rate
Claude Fable 5.1 vs Gemini 3.8 Flash: price
Gemini 3.8 Flash is 13.3× cheaper than Claude Fable 5.1 for a typical chat workload (1,500 tokens in, 500 out).
| Item | Claude Fable 5.1 | Gemini 3.8 Flash |
|---|---|---|
| Input per 1M tokens | $10.00 | $0.75 |
| Output per 1M tokens | $50.00 | $3.75 |
| Cached input per 1M | $0.25 | $0.075 |
| 1,000 chat messages1,500 tokens in, 500 out each | $40.00 | $3.00 |
| Summarize a 50-page PDF30,000 tokens in, 1,000 out | $0.35 | $0.026 |
| One coding-agent task60,000 tokens in, 4,000 out, no caching | $0.80 | $0.06 |
Gemini 3.8 Flash: Promo price through Dec 31, 2026; $1.50 in / $7.50 out from Jan 1, 2027.
List prices checked September 28, 2026. Price is half the story: see how people rate each one today.
Claude Fable 5.1 vs Gemini 3.8 Flash in numbers
Output, usually the bigger part of the bill, costs $50.00 on Claude Fable 5.1 and $3.75 on Gemini 3.8 Flash, so Gemini 3.8 Flash is 13.3× cheaper there. Input costs $10.00 versus $0.75 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.80 on Claude Fable 5.1 and $0.06 on Gemini 3.8 Flash. Claude Fable 5.1 accepts 1M tokens of context and Gemini 3.8 Flash 1.05M tokens. Claude Fable 5.1 came out on September 1, 2026 and Gemini 3.8 Flash on September 2, 2026.
Claude Fable 5.1 is made by Anthropic; Gemini 3.8 Flash by Google. Estimate your own bill for both in the cost calculator.
Which one feels dumber today?
- Claude Fable 5.1Anthropic
–no votes yet - Gemini 3.8 FlashGoogle–no votes yet
Frequently asked questions
Is Claude Fable 5.1 or Gemini 3.8 Flash cheaper?
Gemini 3.8 Flash is 13.3× cheaper than Claude Fable 5.1 for a typical chat workload (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $50.00 on Claude Fable 5.1 and $3.75 on Gemini 3.8 Flash, so Gemini 3.8 Flash is 13.3× cheaper there.
Which is better, Claude Fable 5.1 or Gemini 3.8 Flash?
It depends on the task, and price is only part of it. Check how people rate each one today on the Claude Fable 5.1 and Gemini 3.8 Flash pages, and read what users report in Discussions.