Enter opens the highlighted result. Esc closes.

GPT-4o (2024-05-13) vs Solar Pro 4

Solar Pro 4 leads GPT-4o (2024-05-13) on the Artificial Analysis Intelligence Index, 28.2 to 7.3, and Solar Pro 4 costs 25.0x less per output token ($0.60 vs $15.00 per million). Updated October 22, 2026; 32 benchmarks have a result for both.

Replace GPT-4o (2024-05-13) Replace Solar Pro 4
GPT-4o (2024-05-13)OpenAI
Coding
No data
Overall
27.1
Output $/M
$15.00
1
Solar Pro 4Upstage
Coding
No data
Overall
No data
Output $/M
$0.60
31
vs boards won of 32 shared

GPT-4o (2024-05-13) or Solar Pro 4: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick GPT-4o (2024-05-13) for work measured by AA Coding Index or LMArena Text: coding, where it leads.

Model AGPT-4o (2024-05-13)OpenAINot benchmarkedNo coding benchmarkNo cost per solved taskModel BSolar Pro 4UpstageNot benchmarked1 independent benchmarkNo cost per solved task
Shared results
32
GPT-4o (2024-05-13) only
12
Solar Pro 4 only
13
Like-for-like categories
6 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
GPT-4o (2024-05-13) not benchmarked, Solar Pro 4 not benchmarked.
Widest category
Reasoning, 27.3 points apart on average over 5 shared benchmarks.
Widest single gap
GPQA Diamond (Artificial Analysis run): GPT-4o (2024-05-13) 52.6% against Solar Pro 4 89.1%, 36.5 points apart on a 0 to 100 scale.
Output price
GPT-4o (2024-05-13) $15.00 against Solar Pro 4 $0.60 per million output tokens, 25.0x apart.
Context window
GPT-4o (2024-05-13) takes 128K tokens, Solar Pro 4 524K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGPT-4o (2024-05-13)BarsSolar Pro 4Ties
Coding03
Intelligence01
Reasoning05
Math02
Knowledge04
General116
All shared boards131
CodingLike-for-likeSix of these boards feed the Vibe Coding Index03
Coding benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
LMArena WebDevNot measured1371Only Solar Pro 4 measured
AA Coding Index24.252.7Solar Pro 4
LiveCodeBench (Artificial Analysis run)33.4%Not measuredOnly GPT-4o (2024-05-13) measured
SciCodeNot measured48.0%Only Solar Pro 4 measured
ALE-BenchNot measured179.3Only Solar Pro 4 measured
LMArena Text: coding12971438Solar Pro 4
LMArena Text: software and IT12971431Solar Pro 4
LMArena WebDev: ReactNot measured1363Only Solar Pro 4 measured
LMArena WebDev: HTMLNot measured1371Only Solar Pro 4 measured
Neither model has a result on the other 34 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
AA Intelligence Index7.328.2Solar Pro 4
Neither model has a result on the other 1 board here
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index3 boards, none shared
Agentic work benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
Design Arena: agents building web appsNot measured1105Only Solar Pro 4 measured
METR time horizons40.8%Not measuredOnly GPT-4o (2024-05-13) measured
BALROG32.3%Not measuredOnly GPT-4o (2024-05-13) measured
Neither model has a result on the other 39 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index05
Reasoning benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
GPQA Diamond50.2%Not measuredOnly GPT-4o (2024-05-13) measured
GPQA Diamond (Artificial Analysis run)52.6%89.1%Solar Pro 4
Humanity's Last Exam (Artificial Analysis run)1.8%29.8%Solar Pro 4
GPQA Diamond (Epoch AI run)48.9%Not measuredOnly GPT-4o (2024-05-13) measured
LMArena Text: hard prompts12811400Solar Pro 4
LMArena Text: expert12501428Solar Pro 4
LMArena Text: hard prompts in English12931427Solar Pro 4
Neither model has a result on the other 16 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index02
Math benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
OTIS Mock AIME6.3%Not measuredOnly GPT-4o (2024-05-13) measured
MATH level 551.0%Not measuredOnly GPT-4o (2024-05-13) measured
LMArena Text: math12841421Solar Pro 4
LMArena Text: mathematical work12841427Solar Pro 4
Neither model has a result on the other 10 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
Knowledge benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
MMLU Pro (Artificial Analysis run)74.0%Not measuredOnly GPT-4o (2024-05-13) measured
MMLU84.2%Not measuredOnly GPT-4o (2024-05-13) measured
LMArena Text: science12951404Solar Pro 4
LMArena Text: medicine and healthcare12781374Solar Pro 4
LMArena Text: legal and government13141383Solar Pro 4
LMArena Text: business and finance12621381Solar Pro 4
Neither model has a result on the other 14 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
Web design benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
Design Arena: websitesNot measured1176Only Solar Pro 4 measured
Design Arena: UI componentsNot measured1147Only Solar Pro 4 measured
Design Arena: game devNot measured1169Only Solar Pro 4 measured
Design Arena: data vizNot measured1178Only Solar Pro 4 measured
Design Arena: 3DNot measured1178Only Solar Pro 4 measured
Design Arena: all code categoriesNot measured1182Only Solar Pro 4 measured
Neither model has a result on the other 3 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index116
General benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
Long context reasoning (AA-LCR)Not measured70.7%Only Solar Pro 4 measured
LMArena Text13001388Solar Pro 4
LMArena Text: instruction following12781375Solar Pro 4
LMArena Text: creative writing12911317Solar Pro 4
LMArena Vision1137Not measuredOnly GPT-4o (2024-05-13) measured
LMArena Text: English13121414Solar Pro 4
LMArena Text: non-English12831363Solar Pro 4
LMArena Text: Chinese12771422Solar Pro 4
LMArena Text: German12831358Solar Pro 4
LMArena Text: Japanese12571320Solar Pro 4
LMArena Text: Korean12341383Solar Pro 4
LMArena Text: French13041400Solar Pro 4
LMArena Text: Spanish12921409Solar Pro 4
LMArena Text: Russian12851357Solar Pro 4
LMArena Text: Polish13651304GPT-4o (2024-05-13)
LMArena Text: multi-turn13021385Solar Pro 4
LMArena Text: longer queries12881382Solar Pro 4
LMArena Text: writing and language12981344Solar Pro 4
LMArena Text: entertainment and media12891332Solar Pro 4
LMArena Vision: English1147Not measuredOnly GPT-4o (2024-05-13) measured
LMArena Vision: Chinese1132Not measuredOnly GPT-4o (2024-05-13) measured
Neither model has a result on the other 27 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-4o (2024-05-13) and Solar Pro 4
BenchmarkGPT-4o (2024-05-13)Solar Pro 4Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

GPT-4o (2024-05-13)$0.013Fits in one request
Solar Pro 4$0.0004Fits in one request

Solar Pro 4 costs less

Repository review

50K input + 3K output tokens

GPT-4o (2024-05-13)$0.295Fits in one request
Solar Pro 4$0.0093Fits in one request

Solar Pro 4 costs less

Agent loop

200K input + 10K output tokens

GPT-4o (2024-05-13)$1.15Exceeds the context window
Solar Pro 4$0.036Fits in one request

Solar Pro 4 costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of GPT-4o (2024-05-13) and Solar Pro 4
SpecificationOpenAI GPT-4o (2024-05-13)Upstage Solar Pro 4
MakerOpenAIUpstage
WeightsNo public weights listedNo public weights listed
ReleasedMay 13, 2024August 10, 2026
Context window128K524K
Input $/Mtok$5.00$0.15
Output $/Mtok$15.00$0.60
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it01
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-4o (2024-05-13) better than Solar Pro 4 for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GPT-4o (2024-05-13) for work measured by AA Coding Index or LMArena Text: coding, where it leads.

Which is cheaper, GPT-4o (2024-05-13) or Solar Pro 4?

GPT-4o (2024-05-13) costs $5.00 per million input tokens and $15.00 per million output tokens; Solar Pro 4 costs $0.15 and $0.60. Cost per solved task is known for neither of them.

Which has the bigger context window, GPT-4o (2024-05-13) or Solar Pro 4?

Solar Pro 4, with 524K tokens against 128K.

How many benchmarks is the GPT-4o (2024-05-13) vs Solar Pro 4 comparison based on?

32 benchmarks have a result for both models as of October 22, 2026. GPT-4o (2024-05-13)'s coding index rests on 0 independent benchmarks and Solar Pro 4's on 1. Where only one model has a result, the page says so instead of naming a winner.

Compare next