Claude Fable 5.2 vs GPT-5 Nano

Price, context window & benchmark comparison

Anthropic

Claude Fable 5.2

Anthropic
$8.00 / $40.00
Input / Output · per 1M tokens
VS
OpenAI

GPT-5 Nano

OpenAI
$0.05 / $0.40
Input / Output · per 1M tokens
Compare different models
Anthropic
OpenAI
Verdict: GPT-5 Nano is 116.4× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix. Claude Fable 5.2 has the larger context window (1M vs 400K).
Claude Fable 5.2GPT-5 Nano
Input price / 1M$8.00$0.05
Output price / 1M$40.00$0.40
Blended price (3:1)$16.00$0.14
Cached input / 1M$0.20$0.005
Context window1M400K
Max output128K128K
Intelligence index64.6—
Coding index——
Providers5—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-11-072025-08-07
Retirement—2026-12-11

Cost calculator

FAQ

Which is cheaper, Claude Fable 5.2 or GPT-5 Nano?

GPT-5 Nano is 116.4× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.

Claude Fable 5.2 vs GPT-5 Nano: which has a bigger context window?

Claude Fable 5.2: 1,000,000 tokens. GPT-5 Nano: 400,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Fable 5.2 ≈ $36,000, GPT-5 Nano ≈ $300.00.

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