Head to head · October 2026

Gemini 4 Argon vs Claude Fable 5.1

Gemini 4 Argon scores higher on the Models at Work leaderboard (85 vs 80 out of 100). Gemini 4 Argon is about 10× cheaper per blended million tokens ($1.99 vs $20, one figure an Artificial Analysis estimate).

Updated Oct 10, 2026 · every number links to who measured it
Gemini 4 Argon · GoogleClaude Fable 5.1 · Anthropic
Leaderboard rank#3#6
Score (0–100)8580
TierFrontierFrontier
Price per 1M tokens$1.99 blended (estimate)$10 in · $50 out
Context window1M1M
Open weightsNoNo
Artificial Analysis Intelligence Index5353
Arena text score15251501
Humanity's Last Exam, Diamond (Scale)—51.3
Best forChat and assistant products, Google Cloud shops, Price-sensitive frontier workLong-horizon agents, Problems Opus fails on, Demanding reasoning

Choose Gemini 4 Argon if…

  • you need chat and assistant products
  • you need google cloud shops
  • you need price-sensitive frontier work

Wins the popularity contest: first on Arena, mid-pack on the index, and priced like a workhorse.

Caveats: Google's public pricing page did not list Argon when read; the blended figure is Artificial Analysis' estimate.

Choose Claude Fable 5.1 if…

  • you need long-horizon agents
  • you need problems opus fails on
  • you need demanding reasoning

The specialist: Anthropic's own docs say to reach for it when Opus 5.5 at high effort still falls short, and the price says the same.

Caveats: Ten dollars per million input is the highest in this table alongside Astra.

What practitioners say

Gemini 4 Argon: The announcement thread ran to 1,190 comments; the independent analysis thread was smaller and more measured.

Questions people ask

Which is better, Gemini 4 Argon or Claude Fable 5.1?

Gemini 4 Argon scores higher on the Models at Work leaderboard (85 vs 80 out of 100). Gemini 4 Argon is about 10× cheaper per blended million tokens ($1.99 vs $20, one figure an Artificial Analysis estimate).

When should I choose Gemini 4 Argon over Claude Fable 5.1?

Choose Gemini 4 Argon for chat and assistant products, google cloud shops, price-sensitive frontier work. Wins the popularity contest: first on Arena, mid-pack on the index, and priced like a workhorse.

When should I choose Claude Fable 5.1 over Gemini 4 Argon?

Choose Claude Fable 5.1 for long-horizon agents, problems opus fails on, demanding reasoning. The specialist: Anthropic's own docs say to reach for it when Opus 5.5 at high effort still falls short, and the price says the same.

Which is cheaper, Gemini 4 Argon or Claude Fable 5.1?

Google does not publish a simple list price for Gemini 4 Argon; Artificial Analysis estimates a blended $1.99 per million tokens (three input to one output). Claude Fable 5.1 costs $10 per million input tokens and $50 per million output tokens on Anthropic's list price (Claude pricing, read Oct 10, 2026).

Scores come from the Models at Work leaderboard: Score is 0 to 100: 50% independent evals normalised within this table, 20% price-performance, 15% practitioner sentiment from Signals and community threads, 15% operational fit (context, speed, availability, open weights). Models within three points are a tie in practice. Vendor-published figures are labelled as such and never counted as independent. Prices are vendor list prices where published; blended figures assume three input tokens per output token.