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  3. Claude Mythos 5 and Fable 5
AnthropicTable chart · 67 points · Claude Fable 5

Claude Mythos 5 and Fable 5

The numbers behind a chart Anthropic published, redrawn natively. Check the original, study the data, then make your own.

Estimated from the image 59%Claude Fable 5Claude Opus 4All Anthropic modelsAll chart data
Chart by Anthropic. Source: x.com

Simplified redraw

Drawn by us from the numbers below. Hover, tap or use the arrow keys.

A simplified redraw: it shows the numbers in our own look, not the look of the original. One accent marks what the chart is about. Values marked with ~ in the table are estimates.

The numbers

First 10 of 67 points are free
GroupSeriesValueSourceConf.
Agentic coding SWE-Bench ProClaude Mythos 5 / Fable 580.3%Estimate0.97
Agentic coding SWE-Bench ProClaude Mythos Preview77.8%Estimate0.97
Agentic coding SWE-Bench ProClaude Opus 4.869.2%Estimate0.50
Agentic coding SWE-Bench ProGPT 5.558.6%Estimate0.97
Agentic coding SWE-Bench ProGemini 3.1 Pro54.2%Estimate0.97
Agentic coding GPQA-A (Diamond)Claude Mythos 5 / Fable 529.3%Estimate0.97
Agentic coding GPQA-A (Diamond)Claude Opus 4.813.4%Estimate0.50
Agentic coding GPQA-A (Diamond)GPT 5.55.7%Estimate0.97
Knowledge work vision GPQA-VClaude Mythos 5 / Fable 529.8%Estimate0.97
Knowledge work vision GPQA-VClaude Opus 4.818.9%Estimate0.50

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Knowledge work vision GPQA-VGPT 5.522.5%Estimate0.30
Knowledge work vision GPQA-VGemini 3.1 Pro13.4%Estimate0.97
Spatial reasoning Blueprint-BenchClaude Mythos 5 / Fable 538.6%Estimate0.30
Spatial reasoning Blueprint-BenchGPT 5.536.2%Estimate0.97
Spatial reasoning Blueprint-BenchGemini 3.1 Pro26.5%Estimate0.97
Tool use AutomationBenchClaude Mythos 5 / Fable 517.4%Estimate0.30
Tool use AutomationBenchClaude Opus 4.815.5%Estimate0.50
Tool use AutomationBenchGPT 5.512.9%Estimate0.30
Tool use AutomationBenchGemini 3.1 Pro9.6%Estimate0.30
Computer use OSWorld-VerifiedClaude Mythos 5 / Fable 585%Estimate0.30
Computer use OSWorld-VerifiedClaude Mythos Preview85.4%Estimate0.97
Computer use OSWorld-VerifiedClaude Opus 4.883.4%Estimate0.50
Computer use OSWorld-VerifiedGPT 5.578.7%Estimate0.30
Computer use OSWorld-VerifiedGemini 3.1 Pro76.2%Estimate0.30
Legal Legal Agent BenchmarkClaude Mythos 5 / Fable 513.3%Estimate0.30
Legal Legal Agent BenchmarkClaude Opus 4.810.4%Estimate0.50
Legal Legal Agent BenchmarkGPT 5.52.1%Estimate0.30
Legal Legal Agent BenchmarkGemini 3.1 Pro0%Estimate0.30
Multidisciplinary reasoning Humanity's Last ExamClaude Mythos 5 / Fable 559%Estimate0.30
Multidisciplinary reasoning Humanity's Last ExamClaude Mythos Preview56.8%Estimate0.30
Multidisciplinary reasoning Humanity's Last ExamClaude Opus 4.849.8%Estimate0.50
Multidisciplinary reasoning Humanity's Last ExamGPT 5.541.4%Estimate0.30
Multidisciplinary reasoning Humanity's Last ExamGemini 3.1 Pro44.4%Estimate0.30
Biology Biology-BenchClaude Mythos 5 / Fable 546.1%Estimate0.97
Biology Biology-BenchClaude Mythos Preview29.6%Estimate0.97
Biology Biology-BenchClaude Opus 4.840%Estimate0.50
Biology Biology-BenchGPT 5.552.2%Estimate0.50
Biology Biology-BenchGemini 3.1 Pro51.4%Estimate0.50
Agentic coding Terminal-Bench 2.1Claude Mythos 5 / Fable 583.45%Estimate0.90
Agentic coding Terminal-Bench 2.1Claude Mythos Preview82.6%Estimate0.97
Agentic coding Terminal-Bench 2.1Claude Opus 4.880.4%Estimate0.50
Cybersecurity ExploitBench (CapR)Claude Mythos 5 / Fable 588%Estimate0.30
Cybersecurity ExploitBench (CapR)Claude Mythos Preview69%Estimate0.97
Cybersecurity ExploitBench (CapR)Claude Opus 4.882.7%Estimate0.50
Cybersecurity ExploitBench (CapR)GPT 5.583.4%Estimate0.30
Cybersecurity ExploitBench (CapR)Gemini 3.1 Pro70.7%Estimate0.97
Health HealthBench ProfessionalClaude Mythos 5 / Fable 566%Estimate0.97
Health HealthBench ProfessionalClaude Mythos Preview64.7%Estimate0.97
Health HealthBench ProfessionalClaude Opus 4.856.9%Estimate0.50
Health HealthBench ProfessionalGPT 5.551.8%Estimate0.97
Knowledge work (GDPval)Claude Mythos 5 / Fable 519.2%Estimate0.50
Legal (Humanity's Last Exam)Claude Mythos Preview56.8%Estimate0.50
Agentic coding (SWE-Bench Pro)Claude Opus 4.569.2%Estimate0.50
Agentic coding (GDPval, Diamond)Claude Opus 4.513.4%Estimate0.50
Knowledge work (GDPval)Claude Opus 4.518%Estimate0.50
Knowledge work vision (GDPval)Claude Opus 4.522.5%Estimate0.50
Spatial reasoning (BlueprintBench)Claude Opus 4.515.5%Estimate0.50
Tool use (AutomationBench)Claude Opus 4.583.4%Estimate0.50
Computer use (Legal Agent Benchmark)Claude Opus 4.510.4%Estimate0.50
Legal (Humanity's Last Exam)Claude Opus 4.549.8%Estimate0.50
Multidisciplinary reasoning (Humanity's Last Exam)Claude Opus 4.557.9%Estimate0.50
Biology (BiologyBench)Claude Opus 4.540%Estimate0.50
Agentic coding (Terminal-Bench 2.1)Claude Opus 4.580.4%Estimate0.50
Cybersecurity (ExploitBench (CapR))Claude Opus 4.582.7%Estimate0.50
Health (HealthBench Professional)Claude Opus 4.556.9%Estimate0.50
Knowledge work (GDPval)GPT 5.517.6%Estimate0.50
Knowledge work vision (GDPval)Gemini 3.1 Pro16.7%Estimate0.50
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JSONAgent skill file

API · Max

Use this chart via API

On the Max plan you can pull this chart's numbers with the provenance of each one, as JSON or CSV, with its redraw spec, or call it from an agent over MCP. Chart id 6963ef7b165c.

See the Max planAPI docs
PathReturnsPlan
GET/api/v1/charts/6963ef7b165cTitle, publisher, date, form, point count; with a Max key, the data linkOpen
GET/api/v1/charts/6963ef7b165c/dataEvery point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSVMax
GET/api/v1/charts/6963ef7b165c/render?view=1The draw-only view this page usesOpen
POST/mcpTool get_chart_data with this id, for Claude, Cursor and other agentsMax
curlMax
curl -s https://viral-chart.com/api/v1/charts/6963ef7b165c/data \
  -H "Authorization: Bearer $VIRALCHART_KEY"
Claude CodeMax
claude mcp add --transport http viralchart https://viral-chart.com/mcp \
  --header "Authorization: Bearer $VIRALCHART_KEY"

60 requests a minute per key; over that you get 429 with Retry-After. Up to 5 keys per account, made on your account page and shown once. Without Max, the data route answers 402 with a link to the plans. The numbers describe a chart its publisher owns, and every file carries a license note.

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More data from Anthropic

All chart data
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Questions people ask

How accurate are these numbers?

They are estimated from the image by two independent passes, with confidence 0.59 on a 0 to 1 scale. Printed numbers read well; values read off an axis can be a few percent off.

Can I reuse this data?

The numbers describe a chart that Anthropic published. The image, layout and styling belong to them. Use the numbers with a credit to the publisher, and make your picture from your own data.

How do I get the file?

The JSON, CSV and agent skill file are under the email gate on this page. In this prototype they are static files at /api/charts/6963ef7b165c.json and /api/charts/6963ef7b165c.skill.md.