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Step 3.5 Flash 2603 is available on the Respan AI Gateway for production LLM workloads. Supports tool use, explicit caching, and implicit caching. Up to 256K context window.
from openai import OpenAI client = OpenAI( base_url="https://api.respan.ai/api/", api_key="YOUR_RESPAN_API_KEY",) response = client.chat.completions.create( model="empiriolabs/step-3-5-flash-2603", messages=[{"role": "user", "content": "Hello!"}],)print(response.choices[0].message.content)from openai import OpenAI client = OpenAI( base_url="https://api.respan.ai/api/", api_key="YOUR_RESPAN_API_KEY",) response = client.chat.completions.create( model="empiriolabs/step-3-5-flash-2603", messages=[{"role": "user", "content": "Hello!"}],)print(response.choices[0].message.content)Gateway routes for this model on the Respan gateway, including fallback routes when configured.
| Model | Capabilities | ||||||
|---|---|---|---|---|---|---|---|
| empiriolabs/step-3-5-flash-2603 | 256K | $0.10/M | $0.30/M | Read:$0.02/MWrite:$0.00/M | — | — |
Other models from the same provider available through the gateway.
| Model | Capabilities | ||||||
|---|---|---|---|---|---|---|---|
| empiriolabs/deepreasoning | 4K | $4.80/M | $23.00/M | Read:$4.80/MWrite:$0.00/M | — | — | |
| empiriolabs/deepseek-v3-2 | 128K | $0.57/M | $1.71/M | Read:$0.57/MWrite:$0.00/M | — | — | |
| empiriolabs/deepseek-v4-1-flash | 1M | $0.30/M | $1.20/M | Read:$0.30/MWrite:$0.00/M | — | +2 | — |
| empiriolabs/deepseek-v4-flash | 1M | $0.14/M | $0.28/M | Read:$0.14/MWrite:$0.00/M | — | — | |
| empiriolabs/deepseek-v4-flash-0731 | 1M | $0.42/M | $1.27/M | Read:$0.42/MWrite:$0.00/M | — | — | |
| empiriolabs/deepseek-v4-pro | 1M | $1.65/M | $3.30/M | Read:$1.65/MWrite:$0.00/M | — | — | |
| empiriolabs/deepseek-v4-pro-0813 | 1M | $1.32/M | $3.96/M | Read:$1.32/MWrite:$0.00/M | — | — | |
| empiriolabs/fugu-max | 1M | $2.00/M | $6.00/M | Read:$0.25/MWrite:$0.00/M | — | +2 | — |
| empiriolabs/fugu-ultra-v1-0 | 1M | $7.50/M | $45.00/M | Read:$1.50/MWrite:$0.00/M | — | +2 | — |
| empiriolabs/fugu-ultra-v1-1 | 1M | $5.00/M | $30.00/M | Read:$0.50/MWrite:$0.00/M | — | +2 | — |
| empiriolabs/fugu-ultra-v2-0 | 1M | $5.00/M | $30.00/M | Read:$0.50/MWrite:$0.00/M | — | +2 | — |
| empiriolabs/gemma-4-26b-a4b | 262K | $0.05/M | $0.29/M | Read:$0.03/MWrite:$0.00/M | 1.0s | +2 | 90tps |
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Use Respan with your favorite frameworks and tools.