The Atlas · column F ($3–10) · row 3 (128–256K)
GRIDF3 Models at $3–10 per 1M input with 128–256K tokens of context
2 models · 1 creatorChecked 10 Oct 2026
2 models cost between $3.00 and $5.00 per 1M input tokens and hold 128–256K tokens of context. The cheapest on input is Claude Sonnet 4 at . A request that fills each model’s window costs $0.66–$1.10 here, because windows differ within a square.
$3.00
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Cite this page
ModelsAtlas. “Models at $3–10 per 1M input with 128–256K tokens of context”. Retrieved 10 Oct 2026. https://modelsatlas.com/atlas/f3
Models in F3
Cheapest available standard-tier offer · USD per 1M tokens
| Model | Input | Output | Context | Listed | |
|---|---|---|---|---|---|
| Claude Sonnet 4Anthropic | $3.00 | $15.00 | 200,000 | — | Alternatives |
| Claude Opus 4.5Anthropic | $5.00 | $25.00 | 200,000 | batch | 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
← cheaper8GRIDE3$1–3 per 1M input, 128–256K context: Claude Haiku 4.5, Grok Build 0.1 and 6 more.pricier →3GRIDG3$10–30 per 1M input, 128–256K context: Claude Opus 4, Claude Opus 4.1 and 1 more.
↓ smaller0GRIDF2No model in F2 yet.
↑ larger2GRIDF4$3–10 per 1M input, 256K–1M context: GPT Chat Latest and GPT-5.4 Image 2.Questions about square F3
What is the cheapest AI model with 128–256K tokens of context at $3–10 input?
Claude Sonnet 4 at $3.00 per 1M input tokens and $15.00 output. The other 1 in F3: Claude Opus 4.5.
Which F3 model is cheapest for a request that fills its context window?
Claude Sonnet 4, at about $0.66 for a prompt that fills its 200K window plus its output. The dearest of the 2 is Claude Opus 4.5 at $1.10. The cheapest list price is not always the cheapest full-window request, because windows differ within a square.
Are any F3 models open-weight?
None of the 2 is marked open-weight in our records.
What does grid reference F3 mean?
F is the price column ($3–10 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 $3–10 input?
- Which F3 model is cheapest for a request that fills its context window?
- Are any F3 models open-weight?