Claude Opus 4.6 is Anthropic's most capable model for complex coding, long-context reasoning, and agentic workflows. Supports text and image inputs. Token-based pricing: $3.00/M input tokens, $15.00/M output tokens. Two endpoints: standard async (/claude-opus-4-6) and live streaming (/claude-opus-4-6/stream) via SSE.
About this model
Claude Opus 4.6 is Anthropic's most capable model, optimized for complex coding, long-context reasoning, and agentic workflows. It delivers stronger debugging, better code review, and more reliable large-context performance than Sonnet — ideal for the most demanding engineering and knowledge-work tasks. Pricing: $3.00 per million input tokens and $15.00 per million output tokens — significantly below official Anthropic pricing.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $3.00/M input tokens, $15.00/M output tokens | Token-based billing. Minimum $0.0006 per call. ~60% of official Anthropic pricing. |
| Anthropic (official) | ~$5.00/M input tokens, ~$25.00/M output tokens | Official pricing via api.anthropic.com. |
| Fal.ai | Not available | Claude Opus 4.6 is not available on Fal.ai. |
Token-based billing. Minimum $0.0006 per call. ~60% of official Anthropic pricing.
Official pricing via api.anthropic.com.
Claude Opus 4.6 is not available on Fal.ai.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | The user message or instruction. | Review this code and suggest improvements for performance and readability. |
| Image URL | string | Optional image URL for multimodal requests. | undefined |
| System Prompt | string | Optional system-level instruction to guide model behavior. | You are an expert software architect. |
The user message or instruction.
Review this code and suggest improvements for performance and readability.Optional image URL for multimodal requests.
undefinedOptional system-level instruction to guide model behavior.
You are an expert software architect.Developer documentation
POST /api/v1/claude-opus-4-6 — returns request_id, poll for result via /api/v1/predictions/{id}/result.
POST /api/v1/claude-opus-4-6/stream — returns a live SSE stream. Each chunk: data: {"choices":[{"delta":{"content":"text"}}]}, ending with data: [DONE].
See Streaming Documentation for full code examples.
Frequently asked
Pricing is token-based: $3.00 per million input tokens and $15.00 per million output tokens. The minimum charge per call is $0.0006. Actual cost is deducted after each call based on token counts returned by the model.
Use Opus for the most complex tasks requiring deep reasoning, large codebases, or maximum reliability. Use Sonnet for faster responses and everyday tasks — it offers a better cost/performance trade-off for most use cases.
Yes. Pass an image_url in the request body to include an image as part of the user message.