o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens on the standard tier, or 50% less on input through batch. It holds 200,000 tokens of context.On the atlas: grid E3. 7 other models share the square; the cheapest is Claude Haiku 4.5 at $1.00 per 1M input.
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Cite
Cite this page
ModelsAtlas. “o3”. Retrieved 17 Aug 2026. https://modelsatlas.com/models/openai/o3
- Input / 1M
$2.00
observed We measured- Source
- Our catalogue
- Retrieved
- 17 Aug 2026
- Output / 1M
$8.00
observed We measured- Source
- Our catalogue
- Retrieved
- 17 Aug 2026
- Context
- tokens
200K
observed We measured- Source
- Our catalogue
- Retrieved
- 17 Aug 2026
- Offers
- 6 offers
Standard tier
Standard tier
≈ 150,000 words
1 host · standard, batch
Hosts and pricing
6 offers · tiers are rows, not pagesSuggest a correction
| Host · tier | Variant | Input / 1M | Output / 1M |
|---|---|---|---|
| Our catalogueStandardchecked 17 Aug 2026 | mini | $1.10observed We measured
| $4.40observed We measured
|
| Our catalogueStandardchecked 17 Aug 2026 | base | $2.00observed We measured
| $8.00observed We measured
|
| Our catalogueStandardchecked 17 Aug 2026 | pro | $20.00observed We measured
| $80.00observed We measured
|
| Our catalogueBatchchecked 17 Aug 2026 | mini | $0.55observed We measured
| $2.20observed We measured
|
| Our catalogueBatchchecked 17 Aug 2026 | base | $1.00observed We measured
| $4.00observed We measured
|
| Our catalogueBatch · unavailablechecked 17 Aug 2026 | pro | $10.00observed We measured
| $40.00observed We measured
|
Paying too much? Models near o3 on the atlas.Cheaper alternatives to o3 →
Variants on this page
| Variant | Context | Input from | Offers |
|---|---|---|---|
| base | 200K | $1.00 | 2 |
| mini | 200K | $0.55 | 2 |
| pro | 200K | $20.00 | 2 |
What it costs for your workload
Specifications
Tap src for a sourceSuggest a correction
| Catalogue id | openai-o3 | |
|---|---|---|
| Creator | OpenAI | |
| Context window | 200,000 tokens | Observed |
| Modalities | Not disclosed | |
| Licence | Not disclosed | |
| Weights | Not disclosed | |
| Variants | base, mini, pro | |
| Record checked | 2026-08-17 |
Capabilities
“Not disclosed” means our records do not say, not that the model lacks it.
- Vision inputNot disclosed
- AudioNot disclosed
- Open weightsNot disclosed
- Free tierNone listed
- Batch tierOffered
We hold no data yet on tool calling, structured output or benchmark scores, so none are shown.
Cheaper alternatives to o3
All 15 alternatives →| Model | Grid | Input / 1M | Output / 1M | Context | |
|---|---|---|---|---|---|
| Claude Haiku 4.5Anthropic | GRIDE3 | $1.00 | $5.00 | 200K | Compare |
| Grok Build 0.1xAI | GRIDE3 | $1.00 | $2.00 | 256K | Compare |
| o3 Mini HighOpenAI | GRIDE3 | $1.10 | $4.40 | 200K | Compare |
| o4 MiniOpenAI | GRIDE3 | $1.10 | $4.40 | 200K | Compare |
| o4 Mini HighOpenAI | GRIDE3 | $1.10 | $4.40 | 200K | Compare |
Ranked by distance from grid E3, then price.See all 15 alternatives →
Head-to-head comparisons
Works with
Where o3 connects across the atlas
◆Hosts serving it
- Our catalogue6 offers
◉Tools built on it
- None linked yet. Tell us about one
Questions about o3
How much does o3 cost?
On the cheapest standard-tier offer in our catalogue, input costs $2.00 per 1M tokens and output costs $8.00 per 1M tokens. Batch costs $1.00 and $4.00, half the standard price. Standard-tier input ranges up to $20.00 across the 3 offers we list, so check which host and variant you are buying.
What is the o3 context window?
200,000 tokens, roughly 150,000 English words in one request.
Is there a free tier for o3?
No free-tier offer is listed for o3 in our catalogue. Its cheapest standard tier is $2.00 per 1M input tokens.
What is the cheapest alternative to o3?
Among the models nearest it on the atlas, Codestral 2508 is the cheapest: $0.30 per 1M input tokens, 85% less, with 256K of context.
What does grid E3 mean for o3?
Grid E3 is input $1–3 per 1M tokens with context 128–256K. 7 other models share that square: Claude Haiku 4.5, Grok Build 0.1, o3 Mini High and 4 more. It describes price and context, not quality.
What are the o3 variants?
This page covers 3: base (200K), mini (200K), pro (200K). They share one page, and each variant's prices are rows in the pricing table.
Sources
Every number on this page, where it came from
- Our catalogue — context window, modalities, licenceObserved · 17 Aug 2026
- Our catalogue — prices and tiersObserved · 17 Aug 2026
- Our calculation — grid reference, monthly cost and percentage comparisonsDerived · 17 Aug 2026
Spotted something wrong? Report a correction · Methodology
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- How much does o3 cost?
- What is the o3 context window?
- Is there a free tier for o3?