ERNIE 4.5 vs Solar Pro 4

Solar Pro 4 leads the LLM Stats Score 36.0 to -12.9. Solar Pro 4 is 2.5x cheaper per token.

Baidu · Upstage · Updated for 2026

Which is better?

Solar Pro 4 leads the overall LLM Stats Score 36.0 to -12.9, ranking #72 overall.

In the 2 individual benchmarks reported for both models, Solar Pro 4 wins 2; this is a narrower head-to-head signal than the composite indexes.

On price, Solar Pro 4 is roughly 2.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Solar Pro 4 also accepts a larger context window (524,288 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 ERNIE 4.5

you want predictable pricing at $0.40/M input and $4.00/M output

Choose Solar Pro 4

overall performance matters — it scores 36.0 and ranks #72 on LLM Stats
your work emphasizes reasoning — it leads those capability indexes
you value its reported benchmark strengths — it wins 2 of 2 exact shared results
cost matters — it's about 2.5x cheaper per token
you process long inputs — it offers a 524,288 token context window
you want the most recent training data — it shipped Aug 2026

At a glance

The differences that matter most.

Better token value: Solar Pro 4

Core performance indexes

LLM Stats Score

-12.9

#347 · 20 evals

36.0

#72 · 9 evals

Best

Reasoning

-12.9

#341 · 20 evals

35.6

#71 · 9 evals

Best

Cost, coverage & limits

Benchmark wins

0 of 2

2 of 2

Best

Input price

$0.40 / M

$0.30 / M

Best

Output price

$4.00 / M

$1.20 / M

Best

Context window

128,000

524,288

Best

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared

Index

ERNIE 4.5

Solar Pro 4

Math

-15.8#311 · 8 evals

32.0#55 · 2 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

20 reported for ERNIE 4.5 · 9 for Solar Pro 4

2 shared

ERNIE 4.5 outperforms in 0 benchmarks, while Solar Pro 4 is better at 2 benchmarks (GPQA, MMLU-Pro).

Solar Pro 4 significantly outperforms across most benchmarks.

Sun Aug 30 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Solar Pro 4 costs less

For input processing, ERNIE 4.5 ($0.40/1M tokens) is 1.3x more expensive than Solar Pro 4 ($0.30/1M tokens).

For output processing, ERNIE 4.5 ($4.00/1M tokens) is 3.3x more expensive than Solar Pro 4 ($1.20/1M tokens).

In conclusion, ERNIE 4.5 is more expensive than Solar Pro 4.*

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

Lowest available price from all providers

Sun Aug 30 2026 • llm-stats.com

ERNIE 4.5

Input tokens$0.40

Output tokens$4.00

Best providerNovita

Solar Pro 4

Input tokens$0.30

Output tokens$1.20

Best providerUnknown Organization

Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Solar Pro 4 accepts 524,288 input tokens compared to ERNIE 4.5's 128,000 tokens. Solar Pro 4 can generate longer responses up to 131,072 tokens, while ERNIE 4.5 is limited to 65,536 tokens.

ERNIE 4.5

Input128,000 tokens

Output65,536 tokens

Solar Pro 4

Input524,288 tokens

Output131,072 tokens

Sun Aug 30 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.

ERNIE 4.5

Proprietary

Closed source

Solar Pro 4

Proprietary

Closed source

Release Timeline

When each model was launched

ERNIE 4.5 was released on 2025-06-25, while Solar Pro 4 was released on 2026-08-06.

Solar Pro 4 is 14 months newer than ERNIE 4.5.

ERNIE 4.5

Jun 25, 2025

1.2 years ago

Solar Pro 4

Aug 6, 2026

3 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

ERNIE 4.5 is available from Novita. Solar Pro 4 is available from Upstage.

ERNIE 4.5

Novita

Input Price:Input: $0.40/1MOutput Price:Output: $4.00/1M

Solar Pro 4

Unknown Organization

Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M

* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against ERNIE 4.5 and Solar Pro 4 side-by-side, then vote on the output you prefer.

ERNIE 4.5

✓ Preferred

Solar Pro 4

Open in Playground

FAQ

Common questions about ERNIE 4.5 vs Solar Pro 4.

Which is better, ERNIE 4.5 or Solar Pro 4?

Solar Pro 4 leads the LLM Stats Score 36.0 to -12.9. ERNIE 4.5 is made by Baidu and Solar Pro 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 ERNIE 4.5 compare to Solar Pro 4 in benchmarks?

ERNIE 4.5 scores GPQA: 74.0%, ARC-E: 60.7%, PIQA: 55.2%, Winogrande: 51.3%, CLUEWSC: 48.6%. Solar Pro 4 scores AIME 2026: 95.3%, GPQA: 89.0%, LiveCodeBench: 87.8%, MMLU-Pro: 86.3%, AA-LCR: 71.0%.

Is ERNIE 4.5 cheaper than Solar Pro 4?

Solar Pro 4 is 1.3x cheaper for input tokens. ERNIE 4.5 costs $0.40/M input and $4.00/M output via novita. Solar Pro 4 costs $0.30/M input and $1.20/M output via upstage.

What are the context window sizes for ERNIE 4.5 and Solar Pro 4?

ERNIE 4.5 supports 128K tokens and Solar Pro 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 ERNIE 4.5 and Solar Pro 4?

Key differences include LLM Stats Score (-12.9 vs 36.0), context window (128K vs 524K), input pricing ($0.40 vs $0.30/M). See the full comparison above for benchmark-by-benchmark results.

Who makes ERNIE 4.5 and Solar Pro 4?

ERNIE 4.5 is developed by Baidu and Solar Pro 4 is developed by Upstage.

ERNIE 4.5 vs Solar Pro 4