Claude Fable 5.2 vs Claude Fable 5.1
API price, context window and output limit for Claude Fable 5.2 and Claude Fable 5.1 from Kingy's checked data, and what common workloads cost on each. Every price shows when Kingy last checked it.
At a glance
Verdict: Claude Fable 5.1 costs 1.25× as much per token as Claude Fable 5.2. In Kingy's tests, Claude Fable 5.2 got more right and fewer wrong on the AI Accuracy Index (70% right, 1.6% wrong, against 54% and 8.8%); Claude Fable 5.2 passed 20/20 on Kingy's coding and data tasks, Claude Fable 5.1 15/20. On these small tests, Claude Fable 5.2 did better for less money.
- Claude Fable 5.2 costs less: $8 in / $40 out per 1M tokens, against $10 / $50 for Claude Fable 5.1. Claude Fable 5.1 costs 1.25× as much per token.
- Same context window: 1M tokens.
- Same output limit: up to 128K tokens per request.
| Measure | Claude Fable 5.2 | Claude Fable 5.1 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| API price | $8 in / $40 outCached input $0.2per 1M tokens, USD | $10 in / $50 outCached input $0.25per 1M tokens, USD |
| Context window | 1M tokens | 1M tokens |
| Max output | 128K tokens | 128K tokens |
| Availability | Available (listed as current in official docs) | Available (listed as current in official docs) |
| Retirement | None listed in Kingy AI Deadlines | 2027-12-05 on Azure AI Foundry (scheduled) source |
| Price check | Human-reviewedChecked Nov 13, 01:10 UTC | Human-reviewedChecked Nov 13, 01:10 UTC |
| Official sources | platform.claude.com › pricing platform.claude.com › overview platform.claude.com › prompt-caching | platform.claude.com › pricing platform.claude.com › overview platform.claude.com › prompt-caching |
Larger is not always better: a bigger context window or output limit only matters if your work needs it. These figures compare price and limits, not answer quality.
What common workloads cost
At 10,000 requests a month, standard list rates. Change the numbers in the tool below for your own usage.
| Measure | Claude Fable 5.2 | Claude Fable 5.1 |
|---|---|---|
| Chat reply2,000 in / 500 out | $360 a month$0.04 per request Cheaper | $450 a month$0.05 per request |
| Coding agent step30,000 in / 2,000 out | $3,200 a month$0.32 per request Cheaper | $4,000 a month$0.40 per request |
| Long document summary150,000 in / 1,500 out | $12,600 a month$1.26 per request Cheaper | $15,750 a month$1.58 per request |
| Classify short text300 in / 20 out | $32.00 a month$0.0032 per request Cheaper | $40.00 a month$0.004 per request |
Excludes prompt-cache discounts, batch and priority pricing, regional rates, tool fees and tax. Reasoning tokens count as output, so a model that thinks longer costs more per request than these figures show.
What Kingy measured
Kingy's own runs, not vendor claims. These are small tests: read each one for its tasks and limits before generalising. All results are also on the AI Model Board.
| Test | Claude Fable 5.2 | Claude Fable 5.1 |
|---|---|---|
| AI Accuracy Index: 125 official figures from memory, 2 asks each | Right 70%, wrong 1.6%, not sure 29%2026-11-12 · read the test | Right 54%, wrong 8.8%, not sure 37%2026-11-12 · read the test |
| Kingy's four coding and data tasks, 5 tries each | 20/20 passed · Kingy's bill $0.347602026-11-12 · read the test | 15/20 passed · Kingy's bill $0.463202026-11-09 · read the test |
More from Kingy on these models
- How to get Fable 5.2: plans, limits, API pricing and apps
- Claude Fable 5.2 vs GPT-6.1 Sol: Is Fable worth four times the price?
- Claude Fable 5.2 vs GPT-6 Astra: Benchmarks and task costs
- Claude Opus vs Fable: Is Fable Worth the Premium?
- Astra vs Claude Fable 5.1: Same $10/$50 Price—Which Model Finishes Real Work Cheaper?
Compare other models
Loading Kingy's price data…
Side by side
What would it cost you?
Standard list rates only. Excludes prompt-cache discounts, batch and priority pricing, regional rates, tool fees and tax. Reasoning tokens count as output. A long-context rate applies when one request's input passes the model's threshold.
Prices of other AI models
See the checked prices of all the main AI models in one table, or pick any two models in the tool above.
How this works
Prices come from the same checked data behind Kingy's AI cost calculator and the Kingy Facts API. OpenAI, Anthropic and Google prices are reviewed by a person and re-checked against the official pricing page every few hours. Prices for other providers are read automatically from their official pricing pages by fixed rules, and the table says so.
"Not confirmed right now" means Kingy could not confirm the price within its check window, so it shows no number. Use the official link instead. Retirement dates come from Kingy AI Deadlines. Every source re-check is logged in the public accuracy ledger.
Why isn't my model listed?
Only models with a tracked official price page are listed. Embedding, rerank and moderation models are left out because they have no output price to compare.
Does this show benchmarks?
It shows Kingy's own tests when a model has been through them: the AI Accuracy Index and Kingy's coding and data tasks. These are small tests, so read each one for its tasks and limits before generalising. Vendor benchmarks are left out, because results depend on the test and settings used; Kingy's full comparisons cover them when one exists for your pair.
Popular comparisons
- GPT-6.1 Sol vs GPT-6.1 Terra
- GPT-6.1 Terra vs GPT-6 Luna
- GPT-6.1 Terra vs GPT-6 Astra
- GPT-6.1 Terra vs Claude Sonnet 5.5
- GPT-6 Sol vs GPT-6.1 Sol
- Claude Fable 5.2 vs Claude Fable 5.1
- Kimi K3.1 Pro vs Claude Opus 5.5
- Kimi K3.1 Pro vs GPT-6.1 Sol
- GPT-6.1 Terra vs Gemini 3.8 Flash
- Grok 4.7 vs Grok 4.6
Kingy's full comparisons
- Claude Fable 5.2 vs GPT-6.1 Sol: Is Fable worth four times the price?
- Claude Fable 5.2 vs GPT-6 Astra: Benchmarks and task costs
- Kimi K3.1 Pro vs. GPT-6 Astra vs. GPT-6.1 Sol vs. Claude Fable 5.1 vs. Claude Opus 5.5
- GPT-6.1 Sol and GPT-6 Luna vs Claude Haiku 5.5: Specs, Benchmarks and Real Costs
- GPT-6 Astra vs Claude Sonnet 5.5: Is Astra Worth 5× the API Token Price?
- GPT-6.1 Sol vs Claude Sonnet 5.5: Benchmarks, Pricing and Which to Choose
- Gemini 4 Argon vs GPT-6 Astra, GPT-6.1 Sol and Claude 5.5: Frontier AI Models Compared
- GPT-6 Astra vs GPT-6.1 Sol: both pass 8/8, Sol costs less
- GPT-6.1 Sol vs Claude Opus 5.5: Which Should You Use?
- Claude Sonnet vs Opus: Which Should You Use?
- Claude Sonnet 5.5 vs GPT-6 Sol: Benchmarks, Specs, Evals and Pricing Compared
- GPT-6 Astra vs Claude Opus 5.5: Benchmarks, Costs and Which to Choose
- Claude Opus vs Fable: Is Fable Worth the Premium?
- GPT-6 Sol vs GPT-6 Astra: When Is Astra Worth 5× the Token Price?
- GPT-6 Astra vs Claude Opus 5.5: Which Reasoning Setting Gives You the Best Value?
- GPT-6 Sol vs Claude Opus 5.5: Benchmarks, Specs and Real Costs
- GPT-6 Luna vs Gemini 3.8 Flash: Prices, Specs and Benchmarks
- GPT-6 Sol vs Luna: Specs, Pricing & Benchmarks
- Astra vs Claude Fable 5.1: Same $10/$50 Price—Which Model Finishes Real Work Cheaper?
- GLM-5.3 vs Kimi K3 vs DeepSeek V4 Pro: Who Actually Has the Open-Weight Coding Crown?