--- title: "Testing Claude Fable 5: A Financial Analysis Review" canonical_url: "https://techvoyage.dev/article/testing-claude-fable-5-in-financial-analysis" last_updated: "2026-06-14T11:05:14.908Z" meta: description: "We test Anthropic's new Claude Fable 5 against Qwen Deep Research for financial analysis. Is it worth the upgrade?" "og:description": "We test Anthropic's new Claude Fable 5 against Qwen Deep Research for financial analysis. Is it worth the upgrade?" "og:title": "Testing Claude Fable 5: A Financial Analysis Review" "twitter:description": "We test Anthropic's new Claude Fable 5 against Qwen Deep Research for financial analysis. Is it worth the upgrade?" "twitter:title": "Testing Claude Fable 5: A Financial Analysis Review" --- [Home](https://techvoyage.dev/) ![Claude Fable 5 vs. Qwen: AI Financial Analysis Test](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/EN-Testing-Claude-Fable-5-in-Financial-Analysis.webp) # **Testing Claude Fable 5: A Financial Analysis Review** We test Anthropic's new Claude Fable 5 against Qwen Deep Research for financial analysis. Is it worth the upgrade? Jun 11, 2026 -5 MIN READ On June 9, 2026, Anthropic released **Claude Fable 5**, a Mythos-Class model with advanced safeguards in some areas such as cybersecurity, distillation, chemistry and biology. ![Anthropic Claude Fable 5 launch announcement and model capabilities](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-launch-announcement.webp) Anthropic has published numbers showing Fable 5 is ahead of Opus 4.8 and GPT-5.5 on several key benchmarks. In **GDPval-AA (knowledge work)**, it is significantly ahead of Opus 4.8, GPT 5.5 and Gemini 3.1 Pro. ![Claude Fable 5 benchmark comparison including GDPval-AA knowledge work score](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-benchmarks-gdpval-aa.webp) According to Claude, "Fable 5 shows strong performance on complex analytical tasks.". ![Claude Fable 5 performance statement on complex analytical tasks](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-analytical-performance-statement.webp) We decided to test **Fable 5** by running an analysis of 'Space Exploration Technologies Corporation(SpaceX)' for investment research purposes, using the '**comps-analysis**' skill. The 'skill.md' file was from [**Anthropic's financial-services GitHub repository**](https://github.com/anthropics/financial-services/blob/main/plugins/agent-plugins/market-researcher/skills/comps-analysis/SKILL.md). ![Initiating SpaceX financial comps analysis skill in Claude chat](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/spacex-comps-analysis-skill-initiation.webp)![Claude Fable 5 executing automated financial comps analysis for SpaceX](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/spacex-comps-analysis-running-progress.webp) ![SpaceX automated financial comps analysis workflow final output](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/spacex-comps-analysis-skill-results-terminal.webp) The task took around 25 mins. Claude did not ask any clarifying questions except to request permission to access external websites. Impressively, **Fable 5** was capable of finding the peer companies for comparison. ![Claude Fable 5 requesting explicit permission for external website access](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-external-site-access-permission.webp) ![SpaceX peer group companies identified autonomously by Claude Fable 5](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-spacex-comps-excel-memo.webp)***Please note:** This is for research and educational purpose and does not constitute investment advice. Original generated files can be downloaded here, [**SpaceX_Comps_Analysis_2026-06-10.xlsx**](https://techvoyage.dev/SpaceX_Comps_Analysis_2026-06-10.xlsx), and, [**SpaceX_Comps_Memo_2026-06-10.pdf**](https://techvoyage.dev/SpaceX_Comps_Memo_2026-06-10.pdf). When we tested the same skill using **Qwen deep research**, we had to manually enter the peer companies. The numerical figures are differed slightly compared to **Fable 5**. ![Initiating SpaceX investment comps analysis in Qwen deep research](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/qwen-deep-research-spacex-comps-initiation.webp)![Entering peer companies manually in Qwen deep research for SpaceX analysis](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/qwen-deep-research-spacex-comps-running.webp)![SpaceX financial benchmark analysis report preview generated by Qwen](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/qwen-deep-research-spacex-comps-report-preview.webp) *The Qwen-generated report can be downloaded here, [**The_SpaceX_Comp_Analysis_A_Statistical_Benchmark_of_Growth_Efficiency_and_Valuation_Against_Public_Peers.pdf**](https://techvoyage.dev/The_SpaceX_Comp_Analysis_A_Statistical_Benchmark_of_Growth_Efficiency_and_Valuation_Against_Public_Peers.pdf). Although both reports from Claude and Qwen were produced based on the same methodology specified in the skill, the numbers varied because Claude and Qwen pulled from different sources. For example, Claude Fable 5 used **Stock Analysis** while Qwen used **SEC.gov**. ![Financial data extracted from Stock Analysis by Claude Fable 5](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-data-source-stock-analysis.webp)![SEC filings and SEC.gov data source utilized by Qwen deep research](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/qwen-deep-research-data-source-sec-gov.webp) The report from Qwen also contained much more information regarding the business model, capital structure and operation. After comparing reports, we have decided to try again with `**/research**` command in Claude desktop app. ![Using the new research command in Claude desktop app for company analysis](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-desktop-research-command-spacex.webp) The newly generated analysis report, [**SpaceX_Analysis.pdf**](https://techvoyage.dev/SpaceX_Analysis.pdf), included extra recommendations and caveats sections. Compared to Qwen deep search, it still lacked detailed company information such as operation and capital structure. Is Fable 5 worth the premium price tag? It might be for hard, long tasks and autonomous coding. But for certain knowledge work, like company analysis, it may not be the best value yet. At then end, we tested how well **Fable 5** performs in translation. Strangely, the model auto switched back to **Opus 4.8**. ![Claude desktop app automatically switching model from Fable 5 to Opus 4.8](https://inimages.techvoyage.dev/articles/Testing%20Claude%20Fable%205%20in%20Financial%20Analysis/claude-fable-5-translation-opus-switching.webp) Does this mean any long-context conversion will be reverted back to Opus 4.8 ? Is this just a temporary quirk during the usage before 22nd June? Or is the system simply smart enough to tell the translation doesn't require such a powerful model. 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