Claude Opus 4.1 vs Ember-1

Ember-1 leads the LLM Stats Score 43.1 to 29.8. Ember-1 is 5.0x cheaper per token.

Anthropic · Fireworks AI · Updated for 2026

Which is better?

Ember-1 leads the overall LLM Stats Score 43.1 to 29.8, ranking #51 overall.

In the 1 individual benchmarks reported for both models, Ember-1 wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, Ember-1 is roughly 5.0x 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 Opus 4.1

you want predictable pricing at $15.00/M input and $75.00/M output

Choose Ember-1

overall performance matters — it scores 43.1 and ranks #51 on LLM Stats
your work emphasizes reasoning and coding — it leads those capability indexes
you value its reported benchmark strengths — it wins 1 of 1 exact shared results
cost matters — it's about 5.0x 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

29.8

#138 · 8 evals

43.1

#51 · 4 evals

Best

Reasoning

29.9

#134 · 8 evals

38.6

#71 · 3 evals

Best

Coding

21.3

#99 · 2 evals

37.0

#22 · 3 evals

Best

Agents

12.9

#111 · 1 evals

29.7

#44 · 2 evals

Best

Cost, coverage & limits

Benchmark wins

0 of 1

1 of 1

Best

Input price

$15.00 / M

$3.00 / M

Best

Output price

$75.00 / M

$15.00 / M

Best

Context window

200,000

1,040,000

Best

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared

Index

Claude Opus 4.1

Ember-1

Tool use

18.3#75 · 2 evals

15.9#94 · 2 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

8 reported for Claude Opus 4.1 · 4 for Ember-1

1 shared

Claude Opus 4.1 outperforms in 0 benchmarks, while Ember-1 is better at 1 benchmark (SWE-Bench Verified).

Ember-1 significantly outperforms across most benchmarks.

Fri Oct 09 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 Opus 4.1 ($15.00/1M tokens) is 5.0x more expensive than Ember-1 ($3.00/1M tokens).

For output processing, Claude Opus 4.1 ($75.00/1M tokens) is 5.0x more expensive than Ember-1 ($15.00/1M tokens).

In conclusion, Claude Opus 4.1 is more expensive than Ember-1.*

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

Lowest available price from all providers

Fri Oct 09 2026 • llm-stats.com

Claude Opus 4.1

Input tokens$15.00

Output tokens$75.00

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 Opus 4.1's 200,000 tokens. Only Claude Opus 4.1 specifies output context (32,000 tokens).

Claude Opus 4.1

Input200,000 tokens

Output32,000 tokens

Ember-1

Input1,040,000 tokens

Output- tokens

Fri Oct 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Opus 4.1 supports multimodal inputs, whereas Ember-1 does not.

Claude Opus 4.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.1

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 Opus 4.1

Proprietary

Closed source

Ember-1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.1 was released on 2025-08-05, while Ember-1 was released on 2026-09-23.

Ember-1 is 14 months newer than Claude Opus 4.1.

Claude Opus 4.1

Aug 5, 2025

1.2 years ago

Ember-1

Sep 23, 2026

2 weeks ago

1.1yr 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 Opus 4.1 is available from Anthropic, Bedrock, Google. Ember-1 is available from Fireworks.

Claude Opus 4.1

Anthropic

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

AWS Bedrock

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

Google

Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

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 Opus 4.1 and Ember-1 side-by-side, then vote on the output you prefer.

Claude Opus 4.1

✓ Preferred

Ember-1

Open in Playground

FAQ

Common questions about Claude Opus 4.1 vs Ember-1.

Which is better, Claude Opus 4.1 or Ember-1?

Ember-1 leads the LLM Stats Score 43.1 to 29.8. Claude Opus 4.1 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 Opus 4.1 compare to Ember-1 in benchmarks?

Claude Opus 4.1 scores MMMLU: 89.5%, TAU-bench Retail: 82.4%, GPQA: 80.9%, AIME 2025: 78.0%, MMMU (validation): 77.1%. 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 Opus 4.1 cheaper than Ember-1?

Ember-1 is 5.0x cheaper for input tokens. Claude Opus 4.1 costs $15.00/M input and $75.00/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 Opus 4.1 and Ember-1?

Claude Opus 4.1 supports 200K 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 Opus 4.1 and Ember-1?

Key differences include LLM Stats Score (29.8 vs 43.1), context window (200K vs 1.0M), input pricing ($15.00 vs $3.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.1 and Ember-1?

Claude Opus 4.1 is developed by Anthropic and Ember-1 is developed by Fireworks AI.

Claude Opus 4.1 vs Ember-1