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Claude Sonnet 5.5 is Anthropic's model offering the best combination of speed and intelligence, with a 1M-token context window, 128K max output, and adaptive thinking.
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="anthropic/claude-sonnet-5-5", 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="anthropic/claude-sonnet-5-5", 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 | ||||||
|---|---|---|---|---|---|---|---|
| anthropic/claude-sonnet-5-5 | 1M | $2.00/M | $10.00/M | Read:$0.20/MWrite:$2.50/M | — | +2 | — |
Other models from the same provider available through the gateway.
| Model | Capabilities | ||||||
|---|---|---|---|---|---|---|---|
| anthropic/claude-fable-5 | 1M | $10.00/M | $50.00/M | Read:$1.00/MWrite:$12.50/M | 4.1s | +2 | 831tps |
| anthropic/claude-fable-5-1 | 1M | $10.00/M | $50.00/M | Read:$0.25/MWrite:$12.50/M | 4.0s | +2 | 3205tps |
| anthropic/claude-haiku-4-5 | 200K | $1.00/M | $5.00/M | — | 3.8s | 70tps | |
| anthropic/claude-haiku-4-5-20251001 | 200K | $1.00/M | $5.00/M | — | 14s | 102tps | |
| anthropic/claude-opus-4-5 | 200K | $5.00/M | $25.00/M | — | 1.2s | 318tps | |
| anthropic/claude-opus-4-5-20251101 | 200K | $5.00/M | $25.00/M | — | 1.5s | 7tps | |
| anthropic/claude-opus-4-6 | 200K | $5.00/M | $25.00/M | — | 3.1s | 10tps | |
| anthropic/claude-opus-4-7 | 200K | $5.00/M | $25.00/M | — | 7.1s | 60tps | |
| anthropic/claude-opus-4-8 | 1M | $5.00/M | $25.00/M | — | 9.0s | 58tps | |
| anthropic/claude-opus-5 | 1M | $5.00/M | $25.00/M | Read:$0.50/MWrite:$6.25/M | 7.6s | +2 | 1649tps |
| anthropic/claude-opus-5-5Save 20% | 1M | $3.20/M | $16.00/M | Read:$0.16/MWrite:$4.00/M | 8.2s | +2 | 304tps |
| anthropic/claude-sonnet-4-5 | 200K | $3.00/M | $15.00/M | — | 2.0s | 14tps |
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Use Respan with your favorite frameworks and tools.