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Ember-1 vs Kimi K2 0905

Ember-1 leads the LLM Stats Score 43.1 to 21.6. Kimi K2 0905 is 5.6x cheaper per token.

Fireworks AI · Moonshot AI · Updated for 2026

Which is better?

Ember-1 leads the overall LLM Stats Score 43.1 to 21.6, ranking #51 overall.

On price, Kimi K2 0905 is roughly 5.6x 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 Ember-1

  • overall performance matters — it scores 43.1 and ranks #51 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you process long inputs — it offers a 1,040,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Kimi K2 0905

  • cost matters — it's about 5.6x cheaper per token

At a glance

The differences that matter most.

Ember-1
Fireworks AI
Kimi K2 0905
Moonshot AI
Core performance indexes
LLM Stats Score
43.1
#51
21.6
#201
Reasoning
38.6
#71
22.0
#188
Coding
37.0
#22
19.4
#113
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
$0.60 / M
Output price
$15.00 / M
$2.50 / M
Context window
1,040,000
262,144

Individual benchmarks

4 reported for Ember-1 · 6 for Kimi K2 0905

No common benchmarks found

Ember-1 and Kimi K2 0905don'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

Kimi K2 0905 costs less

For input processing, Ember-1 ($3.00/1M tokens) is 5.0x more expensive than Kimi K2 0905 ($0.60/1M tokens).

For output processing, Ember-1 ($15.00/1M tokens) is 6.0x more expensive than Kimi K2 0905 ($2.50/1M tokens).

In conclusion, Ember-1 is more expensive than Kimi K2 0905.*

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

Lowest available price from all providers
Fri Oct 09 2026 • llm-stats.com
Fireworks AI
Ember-1
Input tokens$3.00
Output tokens$15.00
Best providerFireworks
Moonshot AI
Kimi K2 0905
Input tokens$0.60
Output tokens$2.50
Best providerNovita
Notice missing or incorrect data?

Model Size

Parameter count comparison

1780.0B diff

Ember-1 has 1780.0B more parameters than Kimi K2 0905, making it 178.0% larger.

Fireworks AI
Ember-1
2.8Tparameters
Moonshot AI
Kimi K2 0905
1.0Tparameters
2780.0B
Ember-1
1000.0B
Kimi K2 0905

Context Window

Maximum input and output token capacity

Ember-1 accepts 1,040,000 input tokens compared to Kimi K2 0905's 262,144 tokens. Only Kimi K2 0905 specifies output context (262,144 tokens).

Fireworks AI
Ember-1
Input1,040,000 tokens
Output- tokens
Moonshot AI
Kimi K2 0905
Input262,144 tokens
Output262,144 tokens
Fri Oct 09 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Ember-1

Proprietary

Closed source

Kimi K2 0905

Proprietary

Closed source

Release Timeline

When each model was launched

Ember-1 was released on 2026-09-23, while Kimi K2 0905 was released on 2025-09-05.

Ember-1 is 13 months newer than Kimi K2 0905.

Ember-1

Sep 23, 2026

2 weeks ago

1.0yr newer
Kimi K2 0905

Sep 5, 2025

1.1 years ago

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

Ember-1 is available from Fireworks. Kimi K2 0905 is available from Novita.

Ember-1

fireworks logo
Fireworks
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Kimi K2 0905

novita logo
Novita
Input Price:Input: $0.60/1MOutput Price:Output: $2.50/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Ember-1 and Kimi K2 0905 side-by-side, then vote on the output you prefer.

Ember-1
✓ Preferred
Kimi K2 0905
Open in Playground

FAQ

Common questions about Ember-1 vs Kimi K2 0905.

Which is better, Ember-1 or Kimi K2 0905?

Ember-1 leads the LLM Stats Score 43.1 to 21.6. Ember-1 is made by Fireworks AI and Kimi K2 0905 is made by Moonshot AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Ember-1 compare to Kimi K2 0905 in benchmarks?

Ember-1 scores SWE-Bench Verified: 92.2%, Terminal-Bench 2.1: 82.0%, DeepSWE 1.1: 75.2%, Tau2 Airline: 66.0%. Kimi K2 0905 scores HumanEval: 94.5%, MMLU: 90.2%, MATH: 89.1%, MMLU-Pro: 82.5%, GPQA: 75.8%.

Is Ember-1 cheaper than Kimi K2 0905?

Kimi K2 0905 is 5.0x cheaper for input tokens. Ember-1 costs $3.00/M input and $15.00/M output via fireworks. Kimi K2 0905 costs $0.60/M input and $2.50/M output via novita.

What are the context window sizes for Ember-1 and Kimi K2 0905?

Ember-1 supports 1.0M tokens and Kimi K2 0905 supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Ember-1 and Kimi K2 0905?

Key differences include LLM Stats Score (43.1 vs 21.6), context window (1.0M vs 262K), input pricing ($3.00 vs $0.60/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Ember-1 and Kimi K2 0905?

Ember-1 is developed by Fireworks AI and Kimi K2 0905 is developed by Moonshot AI.

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