ClaudevsGPT

Claude Fable 5 vs GPT 5.6 Terra

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Claude Fable 5

Flagship

GPT 5.6 Terra

Mid-tier
Input $/MTok
$10.00
$2.50
Output $/MTok
$50.00
$15.00
Cache discount
90% off
90% off
Context
1,000K
1,000K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
96
vs
86
Code Review
95
vs
84
Summarization
90
vs
92
Q&A
88
vs
92
Extraction
85
vs
90
Reasoning
98
vs
82
Classification
82
vs
89
Creative Writing
95
vs
80
Claude Fable 5
GPT 5.6 Terra

Guidance

When to use Claude Fable 5 vs GPT 5.6 Terra

Choose Claude Fable 5 when...

  • -You need strong reasoning (confidence 98 vs 82)
  • -You need strong code generation (confidence 96 vs 86)
  • -You need strong code review (confidence 95 vs 84)
  • -You need strong creative writing (confidence 95 vs 80)

Choose GPT 5.6 Terra when...

  • -You need strong summarization (confidence 92 vs 90)
  • -You need strong q&a (confidence 92 vs 88)
  • -You need strong extraction (confidence 90 vs 85)
  • -You need strong classification (confidence 89 vs 82)
  • -Cost matters: 75% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Fable 5
GPT 5.6 Terra
100K tokens
$2.20
$0.63Cheaper
1M tokens
$22.00
$6.25Cheaper
10M tokens
$220.00
$62.50Cheaper

FAQ

When should I use Claude Fable 5 instead of GPT 5.6 Terra?

Claude Fable 5 outperforms GPT 5.6 Terra for Reasoning, Code Generation, Code Review. It costs $10.00/$50.00 per million tokens (input/output).

Is GPT 5.6 Terra cheaper than Claude Fable 5?

Yes. GPT 5.6 Terra input costs $2.50/MTok vs $10.00/MTok for Claude Fable 5, saving 75% on input.

What are the context window sizes for Claude Fable 5 and GPT 5.6 Terra?

Claude Fable 5 has a 1,000K token context window. GPT 5.6 Terra has a 1,000K token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.