Claude Fable 5.2 vs o3

Price, context window & benchmark comparison

Anthropic

Claude Fable 5.2

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

o3

OpenAI
$2.00 / $8.00
Input / Output · per 1M tokens
Compare different models
Anthropic
OpenAI
Verdict: o3 is 4.6× 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 200K).
Claude Fable 5.2o3
Input price / 1M$8.00$2.00
Output price / 1M$40.00$8.00
Blended price (3:1)$16.00$3.50
Cached input / 1M$0.20$0.50
Context window1M200K
Max output128K100K
Intelligence index64.6—
Coding index——
Providers5—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-11-072025-04-16
Retirement—2026-12-11

Cost calculator

FAQ

Which is cheaper, Claude Fable 5.2 or o3?

o3 is 4.6× cheaper than Claude Fable 5.2 on a typical 3:1 input/output mix.

Claude Fable 5.2 vs o3: which has a bigger context window?

Claude Fable 5.2: 1,000,000 tokens. o3: 200,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Fable 5.2 ≈ $36,000, o3 ≈ $8,000.

More comparisons