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Claude Haiku 5.5 vs Ember-1

Claude Haiku 5.5 and Ember-1 are closely matched at 50.3 and 43.6 on the LLM Stats Score. Claude Haiku 5.5 is 30.0x cheaper per token.

Anthropic · Fireworks AI · Updated for 2026

Which is better?

Claude Haiku 5.5 and Ember-1 are closely matched on the overall LLM Stats Score at 50.3 and 43.6.

On price, Claude Haiku 5.5 is roughly 30.0x 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 Haiku 5.5

  • cost matters — it's about 30.0x cheaper per token
  • you want the most recent training data — it shipped Oct 2026

Choose Ember-1

  • you process long inputs — it offers a 1,040,000 token context window

At a glance

The differences that matter most.

Claude Haiku 5.5
Anthropic
Ember-1
Fireworks AI
Core performance indexes
LLM Stats Score
50.3
#18
43.6
#46
Reasoning
47.4
#26
38.6
#71
Coding
40.7
#13
38.0
#20
Agents
33.7
#27
31.2
#35
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
$3.00 / M
Output price
$0.50 / M
$15.00 / M
Context window
1,000,000
1,040,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Haiku 5.5
Ember-1
Tool use
20.8#57
15.9#93
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

36 reported for Claude Haiku 5.5 · 4 for Ember-1

No common benchmarks found

Claude Haiku 5.5 and Ember-1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Claude Haiku 5.5 costs less

For input processing, Claude Haiku 5.5 ($0.10/1M tokens) is 30.0x cheaper than Ember-1 ($3.00/1M tokens).

For output processing, Claude Haiku 5.5 ($0.50/1M tokens) is 30.0x cheaper than Ember-1 ($15.00/1M tokens).

In conclusion, Ember-1 is more expensive than Claude Haiku 5.5.*

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

Lowest available price from all providers
Wed Oct 07 2026 • llm-stats.com
Anthropic
Claude Haiku 5.5
Input tokens$0.10
Output tokens$0.50
Best providerAnthropic
Fireworks AI
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 Haiku 5.5's 1,000,000 tokens. Only Claude Haiku 5.5 specifies output context (128,000 tokens).

Anthropic
Claude Haiku 5.5
Input1,000,000 tokens
Output128,000 tokens
Fireworks AI
Ember-1
Input1,040,000 tokens
Output- tokens
Wed Oct 07 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Haiku 5.5 supports multimodal inputs, whereas Ember-1 does not.

Claude Haiku 5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Haiku 5.5

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 Haiku 5.5

Proprietary

Closed source

Ember-1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Haiku 5.5 was released on 2026-10-07, while Ember-1 was released on 2026-09-23.

Claude Haiku 5.5 is 0 month newer than Ember-1.

Claude Haiku 5.5

Oct 7, 2026

0 days ago

2w newer
Ember-1

Sep 23, 2026

2 weeks ago

Knowledge Cutoff

When training data ends

Claude Haiku 5.5 has a documented knowledge cutoff of 2026-06-01, while Ember-1's cutoff date is not specified.

We can confirm Claude Haiku 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Ember-1's cutoff date.

Claude Haiku 5.5

Jun 2026

Ember-1

—

Provider Availability

Claude Haiku 5.5 is available from Anthropic. Ember-1 is available from Fireworks.

Claude Haiku 5.5

anthropic logo
Anthropic
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M

Ember-1

fireworks logo
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 Haiku 5.5 and Ember-1 side-by-side, then vote on the output you prefer.

Claude Haiku 5.5
✓ Preferred
Ember-1
Open in Playground

FAQ

Common questions about Claude Haiku 5.5 vs Ember-1.

Which is better, Claude Haiku 5.5 or Ember-1?

Claude Haiku 5.5 and Ember-1 are closely matched on the LLM Stats Score at 50.3 and 43.6. Claude Haiku 5.5 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 Haiku 5.5 compare to Ember-1 in benchmarks?

Claude Haiku 5.5 scores Global-MMLU: 87.8%, MILU: 87.6%, BenchCAD (with Python tool): 87.0%, Chartography: 86.2%, SWE-bench Multilingual: 83.7%. 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 Haiku 5.5 cheaper than Ember-1?

Claude Haiku 5.5 is 30.0x cheaper for input tokens. Claude Haiku 5.5 costs $0.10/M input and $0.50/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 Haiku 5.5 and Ember-1?

Claude Haiku 5.5 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 Haiku 5.5 and Ember-1?

Key differences include LLM Stats Score (50.3 vs 43.6), context window (1.0M vs 1.0M), input pricing ($0.10 vs $3.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 5.5 and Ember-1?

Claude Haiku 5.5 is developed by Anthropic and Ember-1 is developed by Fireworks AI.

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