Comparison
Claude Fable 5 vs GPT-5.4 mini
Per input token, GPT-5.4 mini runs 93% cheaper than Claude Fable 5. Output pricing favors GPT-5.4 mini, 91% less per token than Claude Fable 5. Claude Fable 5 has the larger context window than GPT-5.4 mini.
| Field | Claude Fable 5 | GPT-5.4 mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context window | 1M | 400K |
| Max output | 128K | 128K |
| Input / 1M | $10.00 | $0.7593% cheaper |
| Output / 1M | $50.00 | $4.5091% cheaper |
| Cached input / 1M | $1.00 | $0.07593% cheaper |
| Batch discount | 50% | 50% |
| Release date | 2026-06-09 | 2026-03-17 |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Fable 5 | GPT-5.4 mini |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $1,800 | $150.00cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $2,850 | $229.50cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $1,375 | $108.75cheaper |
Claude Fable 5 vs GPT-5.4 mini FAQ
- Is Claude Fable 5 cheaper than GPT-5.4 mini?
- Claude Fable 5 costs $10.00 per 1M input tokens versus $0.75 for GPT-5.4 mini — GPT-5.4 mini is 1233% cheaper per input token.
- Which is cheaper for output tokens, Claude Fable 5 or GPT-5.4 mini?
- Claude Fable 5 charges $50.00 per 1M output tokens; GPT-5.4 mini charges $4.50 per 1M output tokens.
- Which has the larger context window, Claude Fable 5 or GPT-5.4 mini?
- Claude Fable 5 does, with a 1,000,000-token context window.
- Do Claude Fable 5 and GPT-5.4 mini offer cache pricing?
- Claude Fable 5 discounts cached input to $1.00 per 1M tokens. GPT-5.4 mini discounts cached input to $0.075 per 1M tokens.
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