Claude Haiku 5.5
claude-haiku-5-5Claude Haiku 5.5 by Anthropic, with Function Calling, Reasoning, Prompt Caching, Response Schema, Streaming. Via SoleAPI, Input (prompt) costs 0.15 Credits / M tokens, 77% below list price. Compatible with Anthropic Messages: swap the base URL and you are connected.
Capabilities
Listed exactly as the catalog flags them, including what this model does not support.
Function Calling
Connect the model to external tools and APIs: it decides when to call which function and with what arguments, your code runs it. Force or forbid calls with tool_choice.
Reasoning
The model thinks before answering, which markedly improves multi-step planning and reasoning for coding, math and data analysis. Thinking tokens bill at the output rate.
Prompt Caching
Repeated prefixes (system prompts, long documents) hit the cache: reads cost far less than input, writes are priced by retention time.
Response Schema
Constrain output to a JSON Schema you provide for predictable, type-safe results without parsing free text.
Streaming
Tokens arrive over SSE as they are generated; the first frame is forwarded immediately with no buffering. Claude Code, Codex and similar tools depend on this.
VisionNot supported
Natively multimodal: captioning, classification, visual Q&A, chart and screenshot understanding. Images are converted to tokens at the input rate.
AudioNot supported
Audio input or speech output.
VideoNot supported
Video input understanding or video generation.
File InputNot supported
Upload PDFs and other documents directly; the model reads the whole document with native vision.
Web SearchNot supported
Vendor-hosted live web retrieval; the model decides when to search and cites sources.
RealtimeNot supported
Bidirectional low-latency voice / text sessions over WebSocket.
SessionNot supported
Server-side multi-turn context (e.g. previous_response_id in Responses) so you need not resend history.
MediaNot supported
Image / video / music generation endpoints.
Multipart FormNot supported
multipart/form-data file-upload requests.
Binary ResponseNot supported
Endpoints that return raw audio / image bytes.
Protocols & code samples
Change the base URL to SoleAPI, keep everything else. Native protocols pass straight through; “adapted” ones are translated by the gateway.
Anthropic SDK or any Messages-protocol client: point base_url at https://api.soleapi.com and use a SoleAPI key.
curl https://api.soleapi.com/v1/messages \
-H "x-api-key: $SOLEAPI_KEY" \
-H "anthropic-version: 2023-06-01" \
-H "content-type: application/json" \
-d '{
"model": "claude-haiku-5-5",
"max_tokens": 1024,
"messages": [{"role": "user", "content": "Explain prompt caching in one sentence"}]
}'Full price list
List price → SoleAPI price per channel, every pricing dimension, nothing hidden.
| Item | Unit | Anthropic list price | Official Claude ×1.577% off |
|---|---|---|---|
| Input (prompt) | per 1M tokens | 0.15 Credits | |
| Output (completion) | per 1M tokens | 0.75 Credits | |
| Cache read | per 1M tokens | 0.015 Credits | |
| Cache write · 5 min | per 1M tokens | 0.1875 Credits | |
| Cache write · 1 hour | per 1M tokens | 0.3 Credits |
“Off” is computed at 1 Credit = ¥1 and today’s rate: 1 − channel multiplier × (1 Credit in the list currency). Standard(>100K): when input exceeds 100,000 tokens, billed at Cache read ×5、Cache write · 1 hour ×5、Cache write · 5 min ×5、Output (completion) ×5、Input (prompt) ×5; stacks with any channel.
FAQ
How much does the Claude Haiku 5.5 API cost?
Via SoleAPI, Input (prompt) costs 0.15 Credits / M tokens, with 1 Credit = ¥1. That is 77% below the Anthropic list price.
Does Claude Haiku 5.5 support function calling and structured outputs?
Function calling with tool_choice control is supported; structured outputs (JSON Schema) are supported.
How do I use Claude Haiku 5.5 in Claude Code?
Set ANTHROPIC_BASE_URL=https://api.soleapi.com, ANTHROPIC_API_KEY to your SoleAPI key and ANTHROPIC_MODEL=claude-haiku-5-5, then run claude. No config files to edit.
One API key for Claude Haiku 5.5 and 30+ models
Free credits on sign-up, pay as you go, no monthly fee.