MODEL PROOF
o3
BETTER VALUE OPTION
A stored alternative has an equal-or-higher measured score and an equal-or-lower price.
Muse Spark 1.3 · Δ score 79.8 points · 43% lower measured price · $2.00 / 1M tokens
Gemini 3.8 Flash is a further stored option with these losses: 100K → 66K max output
- Independent LMArena score
- 1,409.9 ± 3.63 · 58,579 votes
- Context window
- 200K
- Maximum output
- 100K
- Input modalities
- image, text, file
- Output modalities
- text
- Published input price
- $2.00 / 1M tokens
- Published output price
- $8.00 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Every price dimension · USD per million tokens
| Input | $2.00/M |
|---|---|
| Output | $8.00/M |
| Cached input | $0.500/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.01/call |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
1 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| OpenAIopenai Endpoint terms
| $2.00 | $8.00 | undeclared | 100.00% |
Independent scores
| LMArena Elo | 1409.9default |
|---|
LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.
Best rankings by task
- dataviz #52of 106 1200
Capability
| Context window | 200K |
|---|---|
| Max output | 100K |
| Input modes | image, text, file |
| Tool use | yes |
| Reasoning | optional |
| Knowledge cutoff | 2024-06-30 |
| Open weights | Unknown |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-09-23 |
| Quality data | verified |
o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....
Questions this page answers
What does o3 cost?
$2.00/M in, $8.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does o3 have an independent quality score?
o3 has an LMArena score in this catalogue.
What beats o3?
Muse Spark 1.3 has an equal-or-higher measured score and an equal-or-lower price.
Does this page use Artificial Analysis scores for o3?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/openai__o3/)<a href="https://undominated.ai/models/openai__o3/"><img src="https://undominated.ai/badge/openai__o3.svg" alt="o3 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/openai__o3.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
older than the last deploy.
