Claude Fable 5.1 vs Gemini 4 Argon: API pricing
As of Oct 14, 2026, Claude Fable 5.1 costs $10.00 input / $50.00 output per million tokens from Anthropic, and Gemini 4 Argon costs $2.00 / $10.00 from Google. For 10M input and 2M output tokens a month, Claude Fable 5.1 comes to $200.00 and Gemini 4 Argon to $40.00, so Gemini 4 Argon is 80% cheaper than Claude Fable 5.1. On LMArena, Gemini 4 Argon scores higher, 1533 against 1510.
Your monthly cost at the official price
Claude Fable 5.1: $200.00
Gemini 4 Argon: $40.00cheaper
| Detail |  Claude Fable 5.1 |  Gemini 4 Argon |
|---|---|---|
| Maker | Anthropic | |
| Official input / output | $10.00 / $50.00per million tokens | $2.00 / $10.00per million tokens |
| Cached input | $0.25 | $0.10 |
| Cheapest seller | $10.00 / $50.00Amazon Bedrock Converse | $2.00 / $10.00Google Gemini |
| Sellers | 5 | 4 |
| Context | 1M | 1.05M |
| LMArena overall | 1510 · #3 | 1533 · #1 |
| LMArena coding | 1529 · #8 | 1548 · #1 |
| Features |
Every seller's price: Claude Fable 5.1 · Gemini 4 Argon
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Prices in USD from LiteLLM and models.dev, checked daily; arena scores from LMArena (CC BY 4.0). Confirm on the seller's pricing page before you rely on a number.