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Ember-1 vs Solar Mini 4

Ember-1 leads the LLM Stats Score 43.1 to 31.9. Solar Mini 4 is 34.3x cheaper per token.

Fireworks AI · Upstage · Updated for 2026

Which is better?

Ember-1 leads the overall LLM Stats Score 43.1 to 31.9, ranking #51 overall.

On price, Solar Mini 4 is roughly 34.3x 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 Ember-1

  • overall performance matters — it scores 43.1 and ranks #51 on LLM Stats
  • your work emphasizes coding and agents — 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 Solar Mini 4

  • cost matters — it's about 34.3x cheaper per token

At a glance

The differences that matter most.

Ember-1
Fireworks AI
Solar Mini 4
Upstage
Core performance indexes
LLM Stats Score
43.1
#51
31.9
#122
Reasoning
38.6
#72
31.7
#120
Coding
37.0
#22
17.1
#135
Agents
29.7
#44
2.6
#179
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
$0.10 / M
Output price
$15.00 / M
$0.40 / M
Context window
1,040,000
524,288

Individual benchmarks

4 reported for Ember-1 · 6 for Solar Mini 4

No common benchmarks found

Ember-1 and Solar Mini 4don'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

Solar Mini 4 costs less

For input processing, Ember-1 ($3.00/1M tokens) is 30.0x more expensive than Solar Mini 4 ($0.10/1M tokens).

For output processing, Ember-1 ($15.00/1M tokens) is 37.5x more expensive than Solar Mini 4 ($0.40/1M tokens).

In conclusion, Ember-1 is more expensive than Solar Mini 4.*

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

Lowest available price from all providers
Thu Oct 08 2026 • llm-stats.com
Fireworks AI
Ember-1
Input tokens$3.00
Output tokens$15.00
Best providerFireworks
Upstage
Solar Mini 4
Input tokens$0.10
Output tokens$0.40
Best providerUnknown Organization
Notice missing or incorrect data?

Model Size

Parameter count comparison

2745.0B diff

Ember-1 has 2745.0B more parameters than Solar Mini 4, making it 7842.9% larger.

Fireworks AI
Ember-1
2.8Tparameters
Upstage
Solar Mini 4
35.0Bparameters
2780.0B
Ember-1
35.0B
Solar Mini 4

Context Window

Maximum input and output token capacity

Ember-1 accepts 1,040,000 input tokens compared to Solar Mini 4's 524,288 tokens. Only Solar Mini 4 specifies output context (131,072 tokens).

Fireworks AI
Ember-1
Input1,040,000 tokens
Output- tokens
Upstage
Solar Mini 4
Input524,288 tokens
Output131,072 tokens
Thu Oct 08 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

Solar Mini 4

Proprietary

Closed source

Release Timeline

When each model was launched

Ember-1 was released on 2026-09-23, while Solar Mini 4 was released on 2026-09-22.

Ember-1 is 0 month newer than Solar Mini 4.

Ember-1

Sep 23, 2026

2 weeks ago

1d newer
Solar Mini 4

Sep 22, 2026

2 weeks ago

Knowledge Cutoff

When training data ends

Solar Mini 4 has a documented knowledge cutoff of 2026-02-01, while Ember-1's cutoff date is not specified.

We can confirm Solar Mini 4's training data extends to 2026-02-01, but cannot make a direct comparison without Ember-1's cutoff date.

Ember-1

—

Solar Mini 4

Feb 2026

Provider Availability

Ember-1 is available from Fireworks. Solar Mini 4 is available from Upstage.

Ember-1

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

Solar Mini 4

upstage logo
Unknown Organization
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Ember-1 and Solar Mini 4 side-by-side, then vote on the output you prefer.

Ember-1
✓ Preferred
Solar Mini 4
Open in Playground

FAQ

Common questions about Ember-1 vs Solar Mini 4.

Which is better, Ember-1 or Solar Mini 4?

Ember-1 leads the LLM Stats Score 43.1 to 31.9. Ember-1 is made by Fireworks AI and Solar Mini 4 is made by Upstage. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Ember-1 compare to Solar Mini 4 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%. Solar Mini 4 scores AA-LCR: 83.3%, SciCode: 47.6%, GDPval-AA 2.1: 35.7%, AA-Briefcase v1.1: 29.1%, Humanity's Last Exam (no tools, text-only): 25.8%.

Is Ember-1 cheaper than Solar Mini 4?

Solar Mini 4 is 30.0x cheaper for input tokens. Ember-1 costs $3.00/M input and $15.00/M output via fireworks. Solar Mini 4 costs $0.10/M input and $0.40/M output via upstage.

What are the context window sizes for Ember-1 and Solar Mini 4?

Ember-1 supports 1.0M tokens and Solar Mini 4 supports 524K 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 Solar Mini 4?

Key differences include LLM Stats Score (43.1 vs 31.9), context window (1.0M vs 524K), input pricing ($3.00 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Ember-1 and Solar Mini 4?

Ember-1 is developed by Fireworks AI and Solar Mini 4 is developed by Upstage.

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