Cheapest Language Models in 2026
Updated
437 on record. Sorted by input price; every figure comes from the OpenRouter model catalogue, with the page it was read from on each entry.
437listed
| # | Model | Context window | Input / 1M | Output / 1M |
|---|---|---|---|---|
| 426 | GPT-5.2 Pro (batch)OpenAIimage, text, file | 400K | $10.51 | $841 |
| 427 | Claude Opus 4.1Anthropicimage, text, file | 200K | $151 | $751 |
| 428 | GPT-5.4 Pro (batch)OpenAItext, image, file | 1.1M | $151 | $901 |
| 429 | GPT-5.5 Pro (batch)OpenAIfile, image, text | 1.1M | $151 | $901 |
| 430 | GPT-5 ProOpenAIimage, text, file | 400K | $151 | $1,201 |
| 431 | o1OpenAItext, image, file | 200K | $151 | $601 |
| 432 | o3 ProOpenAItext, file, image | 200K | $201 | $801 |
| 433 | GPT-5.2 ProOpenAIimage, text, file | 400K | $211 | $1,681 |
| 434 | GPT-4OpenAItext | 8K | $301 | $601 |
| 435 | GPT-5.4 ProOpenAItext, image, file | 1.1M | $301 | $1,801 |
| 436 | GPT-5.5 ProOpenAIfile, image, text | 1.1M | $301 | $1,801 |
| 437 | o1-proOpenAItext, image, file | 200K | $1,501 | $6,001 |
Context bars share one log scale, 1K to 2M tokens. Prices are what each provider publishes per million tokens; 'varies' is a router that bills the model it picks.