Claude Fable 5 vs Ember-1

Claude Fable 5 leads the LLM Stats Score 53.4 to 43.1. Ember-1 is 3.3x cheaper per token.

Anthropic · Fireworks AI · Updated for 2026

Which is better?

Claude Fable 5 leads the overall LLM Stats Score 53.4 to 43.1, ranking #10 overall.

In the 3 individual benchmarks reported for both models, Claude Fable 5 wins 2; this is a narrower head-to-head signal than the composite indexes.

On price, Ember-1 is roughly 3.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Ember-1 also accepts a larger context window (1,040,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Fable 5

overall performance matters — it scores 53.4 and ranks #10 on LLM Stats
your work emphasizes reasoning — it leads those capability indexes
you value its reported benchmark strengths — it wins 2 of 3 exact shared results

Choose Ember-1

cost matters — it's about 3.3x cheaper per token
you process long inputs — it offers a 1,040,000 token context window
you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

Better token value: Ember-1

Core performance indexes

LLM Stats Score

53.4

#10 · 18 evals

Best

43.1

#51 · 4 evals

Reasoning

51.1

#9 · 13 evals

Best

38.6

#71 · 3 evals

Coding

43.9

#6 · 9 evals

Best

37.0

#22 · 3 evals

Agents

38.9

#7 · 12 evals

Best

29.7

#44 · 2 evals

Cost, coverage & limits

Benchmark wins

2 of 3

Best

1 of 3

Input price

$10.00 / M

$3.00 / M

Best

Output price

$50.00 / M

$15.00 / M

Best

Context window

1,000,000

1,040,000

Best

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared

Index

Claude Fable 5

Ember-1

Tool use

23.4#41 · 3 evals

15.9#94 · 2 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Claude Fable 5 · 4 for Ember-1

3 shared

Claude Fable 5 outperforms in 2 benchmarks (SWE-Bench Verified, Terminal-Bench 2.1), while Ember-1 is better at 1 benchmark (DeepSWE 1.1).

Claude Fable 5 shows notably better performance in the majority of benchmarks.

Sat Oct 10 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Ember-1 costs less

For input processing, Claude Fable 5 ($10.00/1M tokens) is 3.3x more expensive than Ember-1 ($3.00/1M tokens).

For output processing, Claude Fable 5 ($50.00/1M tokens) is 3.3x more expensive than Ember-1 ($15.00/1M tokens).

In conclusion, Claude Fable 5 is more expensive than Ember-1.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Oct 10 2026 • llm-stats.com

Claude Fable 5

Input tokens$10.00

Output tokens$50.00

Best providerAnthropic

Ember-1

Input tokens$3.00

Output tokens$15.00

Best providerFireworks

Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Ember-1 accepts 1,040,000 input tokens compared to Claude Fable 5's 1,000,000 tokens. Only Claude Fable 5 specifies output context (128,000 tokens).

Claude Fable 5

Input1,000,000 tokens

Output128,000 tokens

Ember-1

Input1,040,000 tokens

Output- tokens

Sat Oct 10 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Fable 5 supports multimodal inputs, whereas Ember-1 does not.

Claude Fable 5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Fable 5

Text

Images

Audio

Video

Ember-1

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Fable 5

Proprietary

Closed source

Ember-1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Fable 5 was released on 2026-06-09, while Ember-1 was released on 2026-09-23.

Ember-1 is 4 months newer than Claude Fable 5.

Claude Fable 5

Jun 9, 2026

4 months ago

Ember-1

Sep 23, 2026

2 weeks ago

3mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Fable 5 is available from Anthropic, DeepInfra. Ember-1 is available from Fireworks.

Claude Fable 5

Anthropic

Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Deepinfra

Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Ember-1

Fireworks

Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Fable 5 and Ember-1 side-by-side, then vote on the output you prefer.

Claude Fable 5

✓ Preferred

Ember-1

Open in Playground

FAQ

Common questions about Claude Fable 5 vs Ember-1.

Which is better, Claude Fable 5 or Ember-1?

Claude Fable 5 leads the LLM Stats Score 53.4 to 43.1. Claude Fable 5 is made by Anthropic and Ember-1 is made by Fireworks AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Fable 5 compare to Ember-1 in benchmarks?

Claude Fable 5 scores SWE-Bench Verified: 95.0%, FrontierSWE: 90.0%, OSWorld-Verified: 85.0%, Terminal-Bench 2.1: 84.3%, SWE-Bench Pro: 80.0%. Ember-1 scores SWE-Bench Verified: 92.2%, Terminal-Bench 2.1: 82.0%, DeepSWE 1.1: 75.2%, Tau2 Airline: 66.0%.

Is Claude Fable 5 cheaper than Ember-1?

Ember-1 is 3.3x cheaper for input tokens. Claude Fable 5 costs $10.00/M input and $50.00/M output via anthropic. Ember-1 costs $3.00/M input and $15.00/M output via fireworks.

What are the context window sizes for Claude Fable 5 and Ember-1?

Claude Fable 5 supports 1.0M tokens and Ember-1 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Fable 5 and Ember-1?

Key differences include LLM Stats Score (53.4 vs 43.1), context window (1.0M vs 1.0M), input pricing ($10.00 vs $3.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Fable 5 and Ember-1?

Claude Fable 5 is developed by Anthropic and Ember-1 is developed by Fireworks AI.

Claude Fable 5 vs Ember-1