The Atlas · column F ($3–10) · row 4 (256K–1M)
GRIDF4 Models at $3–10 per 1M input with 256K–1M tokens of context
2 models · 1 creatorChecked 17 Aug 2026
2 models cost between $5.00 and $8.00 per 1M input tokens and hold 256K–1M tokens of context. The cheapest on input is GPT Chat Latest at ; GPT-5.4 Image 2 has the lowest output price at $15.00. A request that fills each model’s window costs $2.12–$2.24 here, because windows differ within a square.
$5.00
observed We measured
- Source
- Our catalogue
- Retrieved
- 17 Aug 2026
Ask an AI about this pageGChatGPTCClaudePPerplexityGeGeminiXGrok
Cite
Cite this page
ModelsAtlas. “Models at $3–10 per 1M input with 256K–1M tokens of context”. Retrieved 17 Aug 2026. https://modelsatlas.com/atlas/f4
Models in F4
Cheapest available standard-tier offer · USD per 1M tokens
| Model | Input | Output | Context | Listed | |
|---|---|---|---|---|---|
| GPT Chat LatestOpenAI | $5.00 | $30.00 | 400,000 | — | Alternatives |
| GPT-5.4 Image 2OpenAI | $8.00 | $15.00 | 272,000 | — | 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
← cheaper11GRIDE4$1–3 per 1M input, 256K–1M context: GPT-5, GPT-5.1 and 9 more.pricier →1GRIDG4$10–30 per 1M input, 256K–1M context: GPT-5 Image.↓ smaller2GRIDF3$3–10 per 1M input, 128–256K context: Claude Sonnet 4 and Claude Opus 4.5.↑ larger8GRIDF5$3–10 per 1M input, 1M context: Claude Sonnet 4.5, Claude Sonnet 4.6 and 6 more.
Questions about square F4
What is the cheapest AI model with 256K–1M tokens of context at $3–10 input?
GPT Chat Latest at $5.00 per 1M input tokens and $30.00 output. The other 1 in F4: GPT-5.4 Image 2.
Which F4 model is cheapest for a request that fills its context window?
GPT Chat Latest, at about $2.12 for a prompt that fills its 400K window plus its output. The dearest of the 2 is GPT-5.4 Image 2 at $2.24. The cheapest list price is not always the cheapest full-window request, because windows differ within a square.
Are any F4 models open-weight?
None of the 2 is marked open-weight in our records.
What does grid reference F4 mean?
F is the price column ($3–10 per 1M input tokens) and 4 is the context row (256K–1M). 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 256K–1M tokens of context at $3–10 input?
- Which F4 model is cheapest for a request that fills its context window?
- Are any F4 models open-weight?