Claude Fable 5
$3,500.00 / month- Input cost
- $3,000.00
- Output cost
- $500.00
- Per 1,000 calls
- $1,750.00
- Pricing profile
- standard
Source-tracked model comparison
Claude Fable 5 vs Claude Opus 4.8: which costs less for a practical API workload?
Compare verified pricing and model limits for routing within the Claude Fable 5 family. The cost example uses a long-context research workload and does not assume equal model quality.
Direct cost answer: Claude Fable 5 is estimated at $3,500.00 per month and Claude Opus 4.8 at $1,615.00 for 150,000 input tokens, 5,000 output tokens, and 2,000 monthly requests. Claude Opus 4.8 is $1,885.00 lower under these assumptions. This does not identify a quality winner.
Tracked facts
Pricing and model limits
Prices are USD per 1M tokens under each model's verified default profile.
| Field | Claude Fable 5 | Claude Opus 4.8 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| API model ID | claude-fable-5 | claude-opus-4-8 |
| Input / 1M | $10.00 | $5.00 |
| Cached input / 1M | Unavailable | $0.50 |
| Output / 1M | $50.00 | $25.00 |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Maximum output | 128,000 tokens | 128,000 tokens |
| Accepted input | text, image | text, image |
Example workload
Long-context research cost scenario
150,000 input and 5,000 output tokens per request, 2,000 monthly requests, and 10% cached input.
Claude Opus 4.8
$1,615.00 / month- Input cost
- $1,365.00
- Output cost
- $250.00
- Per 1,000 calls
- $807.50
- Pricing profile
- standard
Cost result: Claude Opus 4.8 is $1,885.00 lower per month for these assumptions. This is a price comparison, not a model-quality ranking.
Questions to answer before choosing
- Which model meets the required quality threshold on representative inputs?
- How do output length, retries, and caching change the measured cost?
- Which provider and deployment path fit the team's operational requirements?
What this estimate leaves out
Models whose tracked context window is below the scenario input are excluded from the compatible-model table.
Latency, reliability, output quality, retries, regional processing, and provider-specific tool charges can change the practical decision.