Claude Fable 5.2 vs GPT-6 Astra
Claude Fable 5.2 (9 Nov 2026) is Anthropic's flagship and GPT-6 Astra (3 Sep 2026) is OpenAI's. Claude Fable 5.2 lists at $8 / $40 per 1M tokens and GPT-6 Astra at $10 / $50.
Our verdict
Claude Fable 5.2 is the better buy of the two. It costs less per token, our example job costs $16 on Claude Fable 5.2 against $20 on GPT-6 Astra, and Artificial Analysis scores it higher: 65 against 57 (10 Nov 2026 capture). Anthropic also reports Claude Fable 5.2 at 69.9% on the FrontierSWE v2 coding benchmark against 65.5% for GPT-6 Astra (Anthropic's own comparison, not an independent test). For most small-business work neither is necessary: Claude Opus 5.5 or GPT-6.1 Sol cost far less.
Benchmarks measure test tasks, not your business. Run a real job through both models before you commit.
Side by side
| Claude Fable 5.2 | GPT-6 Astra | |
|---|---|---|
| Lab | Anthropic | OpenAI |
| List price per 1M tokens (input / output) | $8 / $40 | $10 / $50 |
| Scheduled price | - | - |
| Price notes | Cache reads $0.20 per 1M; batch $4 / $20; fast mode $16 / $80. | Prompts over 272K input tokens bill the whole request at 2x input and 1.5x output. |
| Example job at list price | $16 | $20 |
| Context window | 1,000,000 tokens | 922,000 tokens |
| Released | ||
| Open weights | No | No |
1M tokens in and 200K tokens out. List price only: models write different amounts, so a finished job can cost more or less. (1,000,000 / 200,000)
Benchmark rows are left out of this comparison because we do not have comparable independent scores for both models.
Common questions
Is Claude Fable 5.2 better than GPT-6 Astra?
On the independent Artificial Analysis index, yes: 65 against 57 (10 Nov 2026 capture). Anthropic also reports Fable 5.2 ahead on FrontierSWE v2 coding (69.9% against 65.5%), but that is Anthropic's own figure.
Which is cheaper, Fable 5.2 or GPT-6 Astra?
Fable 5.2, at $8 in and $40 out per 1M tokens against $10 and $50 for Astra, so our example job costs $16 against $20. Astra prompts over 272K input tokens also bill the whole request at double input and 1.5 times output.
Should a small business pay for either?
Usually not. Both are priced for the hardest long-running work. Start with Claude Opus 5.5, Claude Sonnet 5.5 or GPT-6.1 Sol, and step up only when a test on your own task shows the cheaper model falling short.
Sources
More model comparisons
- Claude Opus 5.5 vs GPT-6 Astra
- Claude Fable 5.2 vs Claude Opus 5.5
- Claude Fable 5.2 vs Claude Fable 5.1
All model comparisonsSee every model on the AI model tracker
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