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DeepSeek-V4-Flash-Max vs Solar Pro 4

DeepSeek-V4-Flash-Max and Solar Pro 4 are closely matched at 38.5 and 33.8 on the LLM Stats Score. DeepSeek-V4-Flash-Max is 4.7x cheaper per token.

DeepSeek · Upstage · Updated for 2026

Which is better?

DeepSeek-V4-Flash-Max and Solar Pro 4 are closely matched on the overall LLM Stats Score at 38.5 and 33.8.

In the 5 individual benchmarks reported for both models, DeepSeek-V4-Flash-Max wins 3; this is a narrower head-to-head signal than the composite indexes.

On price, DeepSeek-V4-Flash-Max is roughly 4.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

DeepSeek-V4-Flash-Max also accepts a larger context window (1,048,576 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 DeepSeek-V4-Flash-Max

  • you value its reported benchmark strengths — it wins 3 of 5 exact shared results
  • cost matters — it's about 4.7x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you need open weights you can self-host or fine-tune

Choose Solar Pro 4

  • you want the most recent training data — it shipped Aug 2026

At a glance

The differences that matter most.

DeepSeek-V4-Flash-Max
DeepSeek
Solar Pro 4
Upstage
Core performance indexes
LLM Stats Score
38.5
#86
33.8
#123
Reasoning
39.3
#81
33.5
#120
Coding
28.3
#80
20.4
#125
Agents
17.7
#102
10.5
#150
Cost, coverage & limits
Benchmark wins
3 of 5
2 of 5
Input price
$0.09 / M
$0.30 / M
Output price
$0.18 / M
$1.20 / M
Context window
1,048,576
524,288

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
DeepSeek-V4-Flash-Max
Solar Pro 4
Math
39.1#21
32.0#70
Tool use
16.8#100
9.1#164
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for DeepSeek-V4-Flash-Max · 9 for Solar Pro 4

5 shared

DeepSeek-V4-Flash-Max outperforms in 3 benchmarks (BrowseComp, LiveCodeBench, SWE-Bench Verified), while Solar Pro 4 is better at 2 benchmarks (GPQA, MMLU-Pro).

DeepSeek-V4-Flash-Max has a slight edge in benchmark performance.

Wed Nov 11 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

DeepSeek-V4-Flash-Max costs less

For input processing, DeepSeek-V4-Flash-Max ($0.09/1M tokens) is 3.3x cheaper than Solar Pro 4 ($0.30/1M tokens).

For output processing, DeepSeek-V4-Flash-Max ($0.18/1M tokens) is 6.7x cheaper than Solar Pro 4 ($1.20/1M tokens).

In conclusion, Solar Pro 4 is more expensive than DeepSeek-V4-Flash-Max.*

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

Lowest available price from all providers
Wed Nov 11 2026 • llm-stats.com
DeepSeek
DeepSeek-V4-Flash-Max
Input tokens$0.09
Output tokens$0.18
Best providerDeepinfra
Upstage
Solar Pro 4
Input tokens$0.30
Output tokens$1.20
Best providerUnknown Organization
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

DeepSeek-V4-Flash-Max accepts 1,048,576 input tokens compared to Solar Pro 4's 524,288 tokens. DeepSeek-V4-Flash-Max can generate longer responses up to 1,048,576 tokens, while Solar Pro 4 is limited to 131,072 tokens.

DeepSeek
DeepSeek-V4-Flash-Max
Input1,048,576 tokens
Output1,048,576 tokens
Upstage
Solar Pro 4
Input524,288 tokens
Output131,072 tokens
Wed Nov 11 2026 • llm-stats.com

License

Usage and distribution terms

DeepSeek-V4-Flash-Max is licensed under MIT, while Solar Pro 4 uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

DeepSeek-V4-Flash-Max

MIT

Open weights

Solar Pro 4

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-V4-Flash-Max was released on 2026-04-23, while Solar Pro 4 was released on 2026-08-06.

Solar Pro 4 is 4 months newer than DeepSeek-V4-Flash-Max.

DeepSeek-V4-Flash-Max

Apr 23, 2026

6 months ago

Solar Pro 4

Aug 6, 2026

3 months ago

3mo 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

DeepSeek-V4-Flash-Max is available from DeepInfra, DeepSeek. Solar Pro 4 is available from Upstage.

DeepSeek-V4-Flash-Max

deepinfra logo
Deepinfra
Input Price:Input: $0.09/1MOutput Price:Output: $0.18/1M
deepseek logo
DeepSeek
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M

Solar Pro 4

upstage logo
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?

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-Max and Solar Pro 4 side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-Max
✓ Preferred
Solar Pro 4
Open in Playground

FAQ

Common questions about DeepSeek-V4-Flash-Max vs Solar Pro 4.

Which is better, DeepSeek-V4-Flash-Max or Solar Pro 4?

DeepSeek-V4-Flash-Max and Solar Pro 4 are closely matched on the LLM Stats Score at 38.5 and 33.8. DeepSeek-V4-Flash-Max is made by DeepSeek 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 DeepSeek-V4-Flash-Max compare to Solar Pro 4 in benchmarks?

DeepSeek-V4-Flash-Max scores CodeForces: 100.0%, HMMT Feb 26: 94.8%, LiveCodeBench: 91.6%, IMO-AnswerBench: 88.4%, GPQA: 88.1%. Solar Pro 4 scores AIME 2026: 95.3%, GPQA: 89.0%, LiveCodeBench: 87.8%, MMLU-Pro: 86.3%, AA-LCR: 71.0%.

Is DeepSeek-V4-Flash-Max cheaper than Solar Pro 4?

DeepSeek-V4-Flash-Max is 3.3x cheaper for input tokens. DeepSeek-V4-Flash-Max costs $0.09/M input and $0.18/M output via deepinfra. Solar Pro 4 costs $0.30/M input and $1.20/M output via upstage.

What are the context window sizes for DeepSeek-V4-Flash-Max and Solar Pro 4?

DeepSeek-V4-Flash-Max supports 1.0M 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 DeepSeek-V4-Flash-Max and Solar Pro 4?

Key differences include LLM Stats Score (38.5 vs 33.8), context window (1.0M vs 524K), input pricing ($0.09 vs $0.30/M), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Flash-Max and Solar Pro 4?

DeepSeek-V4-Flash-Max is developed by DeepSeek and Solar Pro 4 is developed by Upstage.

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