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o3 Pro vs Free Models Router

Updated October 21, 2026. 0 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace o3 Pro Replace Free Models Router
o3 ProOpenAI
Coding
No data
Overall
21.9
Output $/M
$80.00
Free Models RouterOpenRouter
Coding
No data
Overall
No data
Output $/M
No data
vs 200K vs 200K context window. About the same size.

Decision reading

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

Compare them on price, context and the boards below.

Model Ao3 ProOpenAINot benchmarkedNo coding benchmarkNo cost per solved taskModel BFree Models RouterOpenRouterNot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
0
o3 Pro only
11
Free Models Router only
0
Like-for-like categories
0 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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
o3 Pro not benchmarked, Free Models Router not benchmarked.
Widest category
No category has a result for both models.
Widest single gap
No benchmark has a result for both models.
Output price
o3 Pro $80.00 against Free Models Router Free per million output tokens.
Context window
Both take 200K tokens.

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.

CodingDirectional onlySix of these boards feed the Vibe Coding Index2 boards, none shared
Coding benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
Aider polyglot84.9%Not measuredOnly o3 Pro measured
WeirdML58.2%Not measuredOnly o3 Pro measured
Neither model has a result on the other 36 boards here
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
Intelligence benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
AA Intelligence Index21.9Not measuredOnly o3 Pro measured
Epoch Capabilities Index147.3Not measuredOnly o3 Pro measured
Agentic workNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Agentic work benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
Neither model has a result on 39 boards here
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index3 boards, none shared
Reasoning benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
GPQA Diamond (Artificial Analysis run)84.5%Not measuredOnly o3 Pro measured
ARC-AGI59.3%Not measuredOnly o3 Pro measured
ARC-AGI-24.9%Not measuredOnly o3 Pro measured
Neither model has a result on the other 18 boards here
MathNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Math benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
Neither model has a result on 13 boards here
KnowledgeNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Knowledge benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
Neither model has a result on 17 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
Neither model has a result on 9 boards here
GeneralDirectional onlyPublic boards, shown as published, kept out of the index4 boards, none shared
General benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
DTBench86.9%Not measuredOnly o3 Pro measured
LMCA38.5%Not measuredOnly o3 Pro measured
Fiction.LiveBench97.2%Not measuredOnly o3 Pro measured
Creative writing (Lech Mazur)84.4%Not measuredOnly o3 Pro measured
Neither model has a result on the other 42 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for o3 Pro and Free Models Router
Benchmarko3 ProFree Models RouterLeader
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

o3 Pro$0.060Fits in one request
Free Models Router$0.0000Fits in one request

Free Models Router costs less

Repository review

50K input + 3K output tokens

o3 Pro$1.24Fits in one request
Free Models Router$0.0000Fits in one request

Free Models Router costs less

Agent loop

200K input + 10K output tokens

o3 Pro$4.80Exceeds the context window
Free Models Router$0.0000Exceeds the context window

Free Models Router 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 o3 Pro and Free Models Router
SpecificationOpenAI o3 ProFree Models Router
MakerOpenAIOpenRouter
WeightsNo public weights listedNo public weights listed
ReleasedJune 10, 2025February 1, 2026
Context window200K200K
Input $/Mtok$20.00Free
Output $/Mtok$80.00Free
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is o3 Pro better than Free Models Router for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Compare them on price, context and the boards below.

Which is cheaper, o3 Pro or Free Models Router?

o3 Pro costs $20.00 per million input tokens and $80.00 per million output tokens; Free Models Router costs Free and Free. Cost per solved task is known for neither of them.

Which has the bigger context window, o3 Pro or Free Models Router?

Neither: both take 200K tokens.

How many benchmarks is the o3 Pro vs Free Models Router comparison based on?

0 benchmarks have a result for both models as of October 21, 2026. o3 Pro's coding index rests on 0 independent benchmarks and Free Models Router's on 0. Where only one model has a result, the page says so instead of naming a winner.

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