Model pricing
Input/output in USD per million tokens.
Moonshot AI
| Model | Model ID | Context | OpenRouter | Formal Engines |
|---|---|---|---|---|
| Kimi K3 | kimi-k3 | 1M | $3.00/$15.00 | $2.10/$10.50 |
Z.ai
| Model | Model ID | Context | OpenRouter | Formal Engines |
|---|---|---|---|---|
| GLM 4.5 | glm-4-5 | 128K | $0.600/$2.20 | $0.420/$1.54 |
| GLM 4.5 Air | glm-4-5-air | 128K | $0.130/$0.850 | $0.090/$0.590 |
| GLM 4.6 | glm-4-6 | 198K | $0.550/$2.20 | $0.380/$1.54 |
| GLM 4.7 | glm-4-7 | 128K | $0.400/$1.75 | $0.280/$1.22 |
| GLM 4.7 Flash | glm-4-7-flash | 198K | $0.060/$0.400 | $0.040/$0.280 |
| GLM 5 | glm-5 | 198K | $0.600/$1.92 | $0.420/$1.34 |
| GLM-5 Turbo | glm-5-turbo | 200K | $1.20/$4.00 | $0.840/$2.80 |
| GLM 5.1 | glm-5-1 | 200K | $0.966/$3.04 | $0.670/$2.12 |
| GLM 5.2 | glm-5-2 | 1M | $0.966/$3.04 | $0.670/$2.12 |
| GLM 5.3 | glm-5-3 | 1M | $1.40/$4.40 | $0.980/$3.08 |
| GLM 5.3 Flash | glm-5-3-flash | 1M | $0.075/$0.250 | $0.050/$0.170 |
DeepSeek
| Model | Model ID | Context | OpenRouter | Formal Engines |
|---|---|---|---|---|
| DeepSeek V3.2 | deepseek-v3-2 | 128K | $0.269/$0.400 | $0.180/$0.280 |
| DeepSeek V4 Flash | deepseek-v4-flash | 1M | $0.089/$0.177 | $0.060/$0.120 |
| DeepSeek V4 Flash 0731 | deepseek-v4-flash-0731 | 1M | $0.065/$0.180 | $0.040/$0.120 |
| DeepSeek V4.1 Flash | deepseek-v4-1-flash | 1M | $0.300/$1.20 | $0.210/$0.840 |
| DeepSeek V4 Pro | deepseek-v4-pro | 1M | $1.04/$2.08 | $0.730/$1.45 |
| DeepSeek V4 Pro 0813 | deepseek-v4-pro-0813 | 1M | $1.12/$3.35 | $0.780/$2.34 |
| DeepSeek V4 Flash Vision Exp | deepseek-v4-flash-vision-exp | 1M | $0.220/$0.660 | $0.264/$0.792 |
FLock.io
| Model | Model ID | Context | OpenRouter | Formal Engines |
|---|---|---|---|---|
| flock-this-thatFixed rate; no additional discounts. Typed decisions: JSON-schema string enum required. | flock-this-that | 2K | — | $0.020/$0.000 |
Uncensored
| Model | Model ID | Context | OpenRouter | Formal Engines |
|---|---|---|---|---|
| uncensored | uncensored | 128K | — | $0.140/$0.630 |
| uncensored-role-play | uncensored-role-play | 128K | — | $0.350/$1.40 |
Point any client at one base URL.
OpenAI clients
Cursor, Cline, Kilo Code, aider, LangChain, the OpenAI SDK.
OPENAI_BASE_URL=https://formalengines.com/inference/v1
OPENAI_API_KEY=fe_live_your_keyClaude Code, OpenClaw
Anything speaking the Anthropic Messages API.
ANTHROPIC_BASE_URL=https://formalengines.com/inference
ANTHROPIC_API_KEY=fe_live_your_keyThen use the model ID from the table above. Credit is prepaid and there is no minimum commitment; a key takes about a minute.
Get an API key