Impossibl is a third-party gateway that routes to many upstream models through one API. Gateway quotes are often among the lowest on the site, but availability, rate limits and routing can vary between models, so a low headline price is worth verifying against your own workload.
It lists 76 models on this page. Coverage spans text and chat (76). The lowest-priced model hosted here is GPT OSS 20B.
Impossibl is the lowest paid channel for 2 models that have at least two competing paid hosts, which is where its pricing genuinely leads rather than being the only option.
| Cheapest here? | |||||
|---|---|---|---|---|---|
| GPT OSS 20Bfireworks/gpt-oss-20b | $0.07 | $0.30 | $0.035 | 131,072 | 3.5× pricier |
| GPT OSS 20Bgroq/gpt-oss-20b | $0.075 | $0.30 | $0.038 | 131,072 | 3.6× pricier |
| GPT-5 Nanoopenai/gpt-5-nano | $0.05 | $0.40 | $0.005 | 400,000 | 1.3× pricier |
| MiMo-V2.5xiaomi/mimo-v2.5 | $0.14 | $0.28 | $0.003 | 1,048,576 | 1.0× pricier |
| Gemini 2.5 Flash-Litegoogle/gemini-2.5-flash-lite | $0.10 | $0.40 | $0.01 | 1,048,576 | 1.8× pricier |
| GPT-4.1 nanoopenai/gpt-4.1-nano | $0.10 | $0.40 | $0.025 | 1,047,576 | 1.4× pricier |
| GPT OSS 120Bgroq/gpt-oss-120b | $0.15 | $0.60 | $0.075 | 131,072 | 4.4× pricier |
| GPT OSS 120Bfireworks/gpt-oss-120b | $0.15 | $0.60 | $0.015 | 131,072 | 4.4× pricier |
| GPT-4o miniopenai/gpt-4o-mini | $0.15 | $0.60 | $0.075 | 128,000 | 2.0× pricier |
| DeepSeek V4 Flashdeepseek/deepseek-v4-flash | $0.19 | $0.51 | $0.028 | 1,000,000 | 6.2× pricier |
| GLM-4.5-Airzai/glm-4.5-air | $0.20 | $1.10 | $0.03 | 131,072 | 2.7× pricier |
| GPT OSS 120Bcerebras/gpt-oss-120b | $0.35 | $0.75 | — | 131,072 | 7.6× pricier |
| GPT-5.6 Lunaopenai/gpt-5.6-luna | $0.20 | $1.20 | $0.02 | 1,050,000 | 3.3× pricier |
| GPT-5.4 nanoopenai/gpt-5.4-nano | $0.20 | $1.25 | $0.02 | 400,000 | 1.3× pricier |
| Gemini 3.1 Flash Litegoogle/gemini-3.1-flash-lite | $0.25 | $1.50 | $0.025 | 1,048,576 | 2.0× pricier |
| Qwen3.6 Flashqwen/qwen3.6-flash | $0.25 | $1.50 | $0.05 | 1,000,000 | 1.5× pricier |
| GPT-5 Miniopenai/gpt-5-mini | $0.25 | $2.00 | $0.025 | 400,000 | 6.7× pricier |
| GPT-5.1 Codex miniopenai/gpt-5.1-codex-mini | $0.25 | $2.00 | $0.025 | 400,000 | 1.3× pricier |
| Qwen3.7 Plusqwen/qwen3.7-plus | $0.40 | $1.60 | $0.08 | 1,000,000 | 1.4× pricier |
| GPT-4.1 miniopenai/gpt-4.1-mini | $0.40 | $1.60 | $0.10 | 1,047,576 | 1.3× pricier |
| GPT-3.5-turboopenai/gpt-3.5-turbo | $0.50 | $1.50 | — | 16,385 | 1.1× pricier |
| Gemini 2.5 Flashgoogle/gemini-2.5-flash | $0.30 | $2.50 | $0.03 | 1,048,576 | 3.5× pricier |
| Gemini 3.5 Flash Litegoogle/gemini-3.5-flash-lite | $0.30 | $2.50 | $0.03 | 1,048,576 | 2.0× pricier |
| GLM-4.7zai/glm-4.7 | $0.60 | $2.20 | $0.11 | 204,800 | 2.9× pricier |
| GLM-4.6zai/glm-4.6 | $0.60 | $2.20 | $0.11 | 204,800 | 2.1× pricier |
| GLM-4.5zai/glm-4.5 | $0.60 | $2.20 | $0.11 | 131,072 | 2.0× pricier |
| Grok Build 0.1xai/grok-build-0.1 | $1.00 | $2.00 | $0.20 | 256,000 | 1.0× pricier |
| GLM-5zai/glm-5 | $1.00 | $3.20 | $0.20 | 204,800 | 2.1× pricier |
| Grok 4.3xai/grok-4.3 | $1.25 | $2.50 | $0.20 | 1,000,000 | 1.0× pricier |
| Grok 4.20 (Non-Reasoning)xai/grok-4.20-0309-non-reasoning | $1.25 | $2.50 | $0.20 | 1,000,000 | Lowest anywhere |
| Grok 4.20 (Reasoning)xai/grok-4.20-0309-reasoning | $1.25 | $2.50 | $0.20 | 1,000,000 | Lowest anywhere |
| GPT-5.4 miniopenai/gpt-5.4-mini | $0.75 | $4.50 | $0.075 | 400,000 | 1.3× pricier |
| GLM-5-Turbozai/glm-5-turbo | $1.20 | $4.00 | $0.24 | 200,000 | 1.4× pricier |
| o4-miniopenai/o4-mini | $1.10 | $4.40 | $0.28 | 200,000 | 1.1× pricier |
| o3-miniopenai/o3-mini | $1.10 | $4.40 | $0.55 | 200,000 | 1.1× pricier |
| Claude Haiku 4.5 (latest)anthropic/claude-haiku-4-5 | $1.00 | $5.00 | $0.10 | 200,000 | 1.5× pricier |
| GLM-5.2zai/glm-5.2 | $1.40 | $4.40 | $0.26 | 1,000,000 | 4.4× pricier |
| GLM-5.2fireworks/glm-5.2 | $1.40 | $4.40 | $0.14 | 1,000,000 | 4.4× pricier |
| GLM-5.1zai/glm-5.1 | $1.40 | $4.40 | $0.26 | 200,000 | 2.5× pricier |
| DeepSeek V4 Prodeepseek/deepseek-v4-pro | $1.74 | $3.48 | $0.15 | 1,000,000 | 8.3× pricier |
| Inklingthinkingmachines/inkling | $1.87 | $4.68 | $0.37 | 65,536 | 1.5× pricier |
| Grok 4.5xai/grok-4.5 | $2.00 | $6.00 | $0.30 | 500,000 | 1.0× pricier |
| Gemini 3.6 Flashgoogle/gemini-3.6-flash | $1.50 | $7.50 | $0.15 | 1,048,576 | 4.0× pricier |
| Gemini 3.5 Flashgoogle/gemini-3.5-flash | $1.50 | $9.00 | $0.15 | 1,048,576 | 8.1× pricier |
| Gemini 2.5 Progoogle/gemini-2.5-pro | $1.25 | $10.00 | $0.13 | 1,048,576 | 1.4× pricier |
| GPT-5openai/gpt-5 | $1.25 | $10.00 | $0.13 | 400,000 | 1.3× pricier |
| GPT-5.1openai/gpt-5.1 | $1.25 | $10.00 | $0.13 | 400,000 | 1.3× pricier |
| GPT-5.1 Codexopenai/gpt-5.1-codex | $1.25 | $10.00 | $0.13 | 400,000 | 1.2× pricier |
| GPT-5-Codexopenai/gpt-5-codex | $1.25 | $10.00 | $0.13 | 400,000 | 1.2× pricier |
| GPT-4.1openai/gpt-4.1 | $2.00 | $8.00 | $0.50 | 1,047,576 | 1.2× pricier |
| o3openai/o3 | $2.00 | $8.00 | $0.50 | 200,000 | 1.1× pricier |
| Qwen3.7 Maxqwen/qwen3.7-max | $2.50 | $7.50 | $0.50 | 1,000,000 | 3.0× pricier |
| Qwen3.8 Max Previewqwen/qwen3.8-max-preview | $2.50 | $7.50 | — | 1,000,000 | 7.4× pricier |
| Claude Sonnet 5anthropic/claude-sonnet-5 | $2.00 | $10.00 | $0.20 | 1,000,000 | 1.4× pricier |
| GPT-4oopenai/gpt-4o | $2.50 | $10.00 | $1.25 | 128,000 | 2.0× pricier |
| GPT-5.6 Terraopenai/gpt-5.6-terra | $2.00 | $12.00 | $0.20 | 1,050,000 | 2.8× pricier |
| Gemini 3.1 Pro Previewgoogle/gemini-3.1-pro-preview | $2.00 | $12.00 | $0.20 | 1,048,576 | 2.0× pricier |
| GPT-5.2openai/gpt-5.2 | $1.75 | $14.00 | $0.18 | 400,000 | 7.0× pricier |
| GPT-5.3 Codexopenai/gpt-5.3-codex | $1.75 | $14.00 | $0.18 | 400,000 | 1.3× pricier |
| GPT-5.2 Codexopenai/gpt-5.2-codex | $1.75 | $14.00 | $0.18 | 400,000 | 12.3× pricier |
| GPT-5.4openai/gpt-5.4 | $2.50 | $15.00 | $0.25 | 1,050,000 | 2.7× pricier |
| Kimi K3moonshotai/kimi-k3 | $3.00 | $15.00 | $0.30 | 1,048,576 | 1.7× pricier |
| Claude Sonnet 4.6anthropic/claude-sonnet-4-6 | $3.00 | $15.00 | $0.30 | 1,000,000 | 2.9× pricier |
| Claude Sonnet 4.5 (latest)anthropic/claude-sonnet-4-5 | $3.00 | $15.00 | $0.30 | 200,000 | 1.0× pricier |
| Claude Opus 4.8anthropic/claude-opus-4-8 | $5.00 | $25.00 | $0.50 | 1,000,000 | 11.8× pricier |
| Claude Opus 4.7anthropic/claude-opus-4-7 | $5.00 | $25.00 | $0.50 | 1,000,000 | 1.2× pricier |
| Claude Opus 4.6anthropic/claude-opus-4-6 | $5.00 | $25.00 | $0.50 | 1,000,000 | 1.2× pricier |
| Claude Opus 4.5 (latest)anthropic/claude-opus-4-5 | $5.00 | $25.00 | $0.50 | 200,000 | 1.0× pricier |
| GPT-5.5openai/gpt-5.5 | $5.00 | $30.00 | $0.50 | 1,050,000 | 2.7× pricier |
| GPT-5.6 Solopenai/gpt-5.6-sol | $5.00 | $30.00 | $0.50 | 1,050,000 | 2.8× pricier |
| GPT-4 Turboopenai/gpt-4-turbo | $10.00 | $30.00 | — | 128,000 | 1.1× pricier |
| Claude Fable 5anthropic/claude-fable-5 | $10.00 | $50.00 | $1.00 | 1,000,000 | 2.9× pricier |
| o1openai/o1 | $15.00 | $60.00 | $7.50 | 200,000 | 1.1× pricier |
| GPT-5 Proopenai/gpt-5-pro | $15.00 | $120 | — | 400,000 | 1.1× pricier |
| GPT-5.5 Proopenai/gpt-5.5-pro | $30.00 | $180 | $3.00 | 1,050,000 | 1.1× pricier |
| GPT-5.4 Proopenai/gpt-5.4-pro | $30.00 | $180 | $3.00 | 1,050,000 | 1.3× pricier |