The Atlas · column G ($10–30) · row 3 (128–256K)
GRIDG3 Models at $10–30 per 1M input with 128–256K tokens of context
3 models · 2 creatorsChecked 17 Aug 2026
3 models cost between $15.00 and $15.00 per 1M input tokens and hold 128–256K tokens of context. The cheapest on input is Claude Opus 4 at , tied with 2 others; o1 has the lowest output price at $60.00. A request that fills each model’s window costs $3.24–$3.30 here, because windows differ within a square.
$15.00
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Cite this page
ModelsAtlas. “Models at $10–30 per 1M input with 128–256K tokens of context”. Retrieved 17 Aug 2026. https://modelsatlas.com/atlas/g3
Models in G3
Cheapest available standard-tier offer · USD per 1M tokens
| Model | Input | Output | Context | Listed | |
|---|---|---|---|---|---|
| Claude Opus 4Anthropic | $15.00 | $75.00 | 200,000 | — | Alternatives |
| Claude Opus 4.1Anthropic | $15.00 | $75.00 | 200,000 | batch | Alternatives |
| o1OpenAI | $15.00 | $60.00 | 200,000 | — | Alternatives |
What a window-filling request costs here
One prompt that fills the model’s context window plus up to 4,000 output tokens · Σ derived
Arithmetic from the listed standard-tier rates, not a quote; the cheapest list price is not always the cheapest full-window request.
Neighbouring squares
One step cheaper, pricier, smaller or larger
Questions about square G3
What is the cheapest AI model with 128–256K tokens of context at $10–30 input?
Claude Opus 4 at $15.00 per 1M input tokens and $75.00 output, tied with 2 others. The other 2 in G3: Claude Opus 4.1 and o1.
Which G3 model is cheapest for a request that fills its context window?
o1, at about $3.24 for a prompt that fills its 200K window plus its output. The dearest of the 3 is Claude Opus 4.1 at $3.30. The cheapest list price is not always the cheapest full-window request, because windows differ within a square.
Are any G3 models open-weight?
None of the 3 is marked open-weight in our records.
What does grid reference G3 mean?
G is the price column ($10–30 per 1M input tokens) and 3 is the context row (128–256K). Models in the same square are like-for-like on price and context only; the grid says nothing about quality.
Keep going in your AI
Opens with this page as the source. We add nothing else to the prompt.
- What is the cheapest AI model with 128–256K tokens of context at $10–30 input?
- Which G3 model is cheapest for a request that fills its context window?
- Are any G3 models open-weight?