Claude Fable 5.1 pricing: API and Claude plans
Claude Fable 5.1 costs $10 per million input tokens and $50 per million output, with a 1M context window. Through AIGROW API credit, it costs $4.00 and $20.00.
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars per million tokens, standard rate, shortest context band. In Claude, the cheapest plan with it is Max 5x at $100/mo. Plan prices read 22 October 2026. Number 7 of 256 on the Epoch Capabilities Index by Epoch AI, data of 12 November 2026. CC BY 4.0 Newer model: Claude Fable 5.2
- Through AIGROW credit
- $4.00 / $20.00
- 1,000 support replies
- $50.00
- Cached input
- $0.25
- Context window
- 1,000,000 tokens
- Released
- 1 Sep 2026
- Weights
- Closed weights
From Anthropic’s own pages, 12 November 2026.
Claude Fable 5.1 costs $10 per million input tokens and $50 per million output tokens on Anthropic’s own API, and $0.25 for cached input. At those prices 1,000 support replies cost $50.00, the 2nd most expensive of 49 priced models on our list.
In Claude: Claude Fable 5.1 is included in Max 5x ($100/mo), Max 20x ($200/mo), Team Premium ($125/mo).
claude.com/pricing · Read 22 October 2026. Prices can differ by country and include or exclude tax depending on the country.
AIGROW API credit runs Claude Fable 5.1 at $4.00 / $20.00 per million input / output tokens, up to 60% below list price. See API credit
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts Claude Fable 5.1 among the 49 models with a list price.
| Job | 1,000 runs | Among 49 |
|---|---|---|
| Support reply3,000 in, 400 out. | $50.00 | 2nd most expensive |
| Document summary25,000 in, 1,000 out. | $300 | 2nd most expensive |
| Agent task80,000 in (70,000 cached), 3,000 out. | $268 | 2nd most expensive |
The token counts are ours, chosen to look like real work; the prices are Anthropic’s. All three jobs stay under 100,000 tokens a request, below every long-context surcharge on the list.
Claude Fable 5.1 on real small-business tasks
What the AIGROW benchmark measured when Claude Fable 5.1 was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 85% of 20 runs passed (95% interval 64 to 95%), 10th of 36 models.
- Cost per 1,000 passes
- $33.11, failed runs included, worked from list price.
- Answer time
- 26 s median, 51 s at the 90th percentile.
- Strongest and weakest
- Appointment scheduling (100% passed) and quotes (50%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Legacy model, still available; the current Fable is Claude Fable 5.2, and Anthropic lists no retirement before 1 September 2027. Cache read is 0.025x input on this model ($0.25). Cache write $12.50 (5 min) or $20 (1 h). Batch API 50% off. US-only inference bills 1.1x. Full context window billed at standard rates.
Claude Fable 5.1 against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs Claude Opus 5.5
- Claude Fable 5.1 against Opus 5.5, where Fable costs two and a half times as much as Opus.
- vs GPT-6 Astra
- GPT-6 Astra against the previous Claude Fable, at the same $10 / $50 list price.
- vs Gemini 3.1 Pro (preview)
- Claude Fable 5.1 against Gemini 3.1 Pro, with a fivefold gap in input price.
- vs Claude Opus 5
- Fable costs twice as much as Opus, so buyers ask what the premium buys.
- vs Claude Fable 5.2
- Anthropic's new Fable against the one it replaces, at a fifth less per token: $8 / $40 against $10 / $50.
Other Anthropic models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| Claude Haiku 5.5Anthropic | $0.10 | $0.50 | 1M | $0.50 |
| Claude Haiku 4.5AnthropicNewer model: Claude Haiku 5.5 | $1.00 | $5.00 | 200K | $5.00 |
| Claude Sonnet 5.5Anthropic | $2.00 | $10.00 | 1M | $10.00 |
| Claude Sonnet 5AnthropicNewer model: Claude Sonnet 5.5 | $2.00 | $10.00 | 1M | $10.00 |
| Claude Sonnet 4.6AnthropicNewer model: Claude Sonnet 5.5 | $3.00 | $15.00 | 1M | $15.00 |
| Claude Opus 5.5Anthropic | $4.00 | $20.00 | 1M | $20.00 |
| Claude Opus 5AnthropicNewer model: Claude Opus 5.5 | $5.00 | $25.00 | 1M | $25.00 |
| Claude Fable 5.2Anthropic | $8.00 | $40.00 | 1M | $40.00 |
Where the price comes from
Read on 12 November 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Run Claude Fable 5.1 up to 60% below list price
Through AIGROW API credit, Claude Fable 5.1 costs $4.00 / $20.00 per million input / output tokens against $10.00 / $50.00 at list, and $25 buys $100 of credit. The model id is claude-fable-5.1.
Prices checked 12 November 2026 · See them by release date