/Technology

Anthropic Releases Claude Fable 5.1 for Advanced Coding and Tasks

Anthropic just dropped Claude Fable 5.1, a powerhouse AI model that doubles down on tough coding challenges and long projects, making complex work feel more manageable.

Anthropic Releases Claude Fable 5.1 for Advanced Coding and Tasks · Digg

/Technology

Anthropic Releases Claude Fable 5.1 for Advanced Coding and Tasks

Anthropic just dropped Claude Fable 5.1, a powerhouse AI model that doubles down on tough coding challenges and long projects, making complex work feel more manageable.

Benchmark table comparing Claude Fable 5.1 with Fable 5, Opus 5, and GPT-5.6 Sol across seven evaluations. Fable 5.1 leads on every row, including 52.6% on Terminal-Bench-Science 0.1 and 55.8% on Terminal-Bench 4.0.

The new Fable 5.1 tops benchmarks like 52.6% on Terminal-Bench-Science 0.1 and leads in agentic evaluations, with a 1-million-token context window for verifying its own outputs during extended sessions. Cursor praised its 73.4% score on their toughest coding benchmark, noting strong self-verification on end-to-end tasks, while developers highlighted its natural writing and multi-step efficiency. Costs dropped significantly—75% less for cache reads—though some users hit rate limits faster due to its speed; it's available now on Claude.ai, Cursor, AWS, and more.

Combined views

22.7M

7 posts, first seen 1d ago

128.4K likes5.1K comments17.6K saves10.7K reposts

Anthropic Releases Claude Fable 5.1 for Advanced Coding and Tasks

Anthropic just dropped Claude Fable 5.1, a powerhouse AI model that doubles down on tough coding challenges and long projects, making complex work feel more manageable.

Posts from X

7 posts

CL
Claude@claudeai Yesterday
We’re introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world’s most advanced models for coding and knowledge work.
- likes: 62.5K
- replies: 2.7K
- bookmarks: 9.2K
- reposts: 7.1K
CL
Claude@claudeai Yesterday
Across our benchmarks, the model sets a new standard. It scores 52.6% on Terminal-Bench-Science 0.1, more than double Fable 5. On Terminal-Bench 4.0, it scores 55.8% against 42.0% for Fable 5.
- likes: 5.4K
- replies: 122
- bookmarks: 604
- reposts: 442
CL
ClaudeDevs@ClaudeDevs Yesterday
Fable 5.1 is now live in Claude Code and the Claude Platform. It's priced the same as Fable 5, with 75% cheaper API cache reads. It gets a lot further into a long task before it needs your input, is better at telling you when it's stuck, and its writing style is more natural.
- likes: 8.7K
- replies: 387
- bookmarks: 836
- reposts: 661
CU
Cursor@cursor_ai Yesterday
Claude Fable 5.1 is now available in Cursor! It's the most capable model we’ve run on CursorBench 3.2, scoring 73.4% at max effort. We found it especially skilled at verifying its own work, allowing it to take on difficult coding tasks from start to finish.
- likes: 7.3K
- replies: 255
- bookmarks: 332
- reposts: 351
CL
ClaudeDevs@ClaudeDevs Yesterday
With Fable 5.1 out today, we've also reset 5-hour and weekly limits for all users.
- likes: 24.7K
- replies: 1.1K
- bookmarks: 938
- reposts: 1.4K
AA
Alex Albert@alexalbert__Yesterday
Fable 5.1 is a beast at many things but one thing in particular I have been having a ton of fun with is generating videos through code. For this one I gave it a picture of a property lot. It designed a house for the lot, rendered it, and produced a cinematic walkthrough.
- likes: 8.5K
- replies: 379
- bookmarks: 5.5K
- reposts: 449

Posts from X

7 posts

CL
Claude@claudeai Yesterday
We’re introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world’s most advanced models for coding and knowledge work.
- likes: 62.5K
- replies: 2.7K
- bookmarks: 9.2K
- reposts: 7.1K
CL
Claude@claudeai Yesterday
Across our benchmarks, the model sets a new standard. It scores 52.6% on Terminal-Bench-Science 0.1, more than double Fable 5. On Terminal-Bench 4.0, it scores 55.8% against 42.0% for Fable 5.
- likes: 5.4K
- replies: 122
- bookmarks: 604
- reposts: 442
CL
ClaudeDevs@ClaudeDevs Yesterday
Fable 5.1 is now live in Claude Code and the Claude Platform. It's priced the same as Fable 5, with 75% cheaper API cache reads. It gets a lot further into a long task before it needs your input, is better at telling you when it's stuck, and its writing style is more natural.
- likes: 8.7K
- replies: 387
- bookmarks: 836
- reposts: 661
CU
Cursor@cursor_ai Yesterday
Claude Fable 5.1 is now available in Cursor! It's the most capable model we’ve run on CursorBench 3.2, scoring 73.4% at max effort. We found it especially skilled at verifying its own work, allowing it to take on difficult coding tasks from start to finish.
- likes: 7.3K
- replies: 255
- bookmarks: 332
- reposts: 351
CL
ClaudeDevs@ClaudeDevs Yesterday
With Fable 5.1 out today, we've also reset 5-hour and weekly limits for all users.
- likes: 24.7K
- replies: 1.1K
- bookmarks: 938
- reposts: 1.4K
AA
Alex Albert@alexalbert__Yesterday
Fable 5.1 is a beast at many things but one thing in particular I have been having a ton of fun with is generating videos through code. For this one I gave it a picture of a property lot. It designed a house for the lot, rendered it, and produced a cinematic walkthrough.
- likes: 8.5K
- replies: 379
- bookmarks: 5.5K
- reposts: 449

Combined views

22.7M

7 posts, first seen 1d ago

128.4K likes5.1K comments17.6K saves10.7K reposts

Posts from X

7 posts

CL
Claude@claudeai Yesterday
We’re introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world’s most advanced models for coding and knowledge work.
- likes: 62.5K
- replies: 2.7K
- bookmarks: 9.2K
- reposts: 7.1K
CL
Claude@claudeai Yesterday
Across our benchmarks, the model sets a new standard. It scores 52.6% on Terminal-Bench-Science 0.1, more than double Fable 5. On Terminal-Bench 4.0, it scores 55.8% against 42.0% for Fable 5.
- likes: 5.4K
- replies: 122
- bookmarks: 604
- reposts: 442
CL
ClaudeDevs@ClaudeDevs Yesterday
Fable 5.1 is now live in Claude Code and the Claude Platform. It's priced the same as Fable 5, with 75% cheaper API cache reads. It gets a lot further into a long task before it needs your input, is better at telling you when it's stuck, and its writing style is more natural.
- likes: 8.7K
- replies: 387
- bookmarks: 836
- reposts: 661
CU
Cursor@cursor_ai Yesterday
Claude Fable 5.1 is now available in Cursor! It's the most capable model we’ve run on CursorBench 3.2, scoring 73.4% at max effort. We found it especially skilled at verifying its own work, allowing it to take on difficult coding tasks from start to finish.
- likes: 7.3K
- replies: 255
- bookmarks: 332
- reposts: 351
CL
ClaudeDevs@ClaudeDevs Yesterday
With Fable 5.1 out today, we've also reset 5-hour and weekly limits for all users.
- likes: 24.7K
- replies: 1.1K
- bookmarks: 938
- reposts: 1.4K
AA
Alex Albert@alexalbert__Yesterday
Fable 5.1 is a beast at many things but one thing in particular I have been having a ton of fun with is generating videos through code. For this one I gave it a picture of a property lot. It designed a house for the lot, rendered it, and produced a cinematic walkthrough.
- likes: 8.5K
- replies: 379
- bookmarks: 5.5K
- reposts: 449