Claude Sonnet 5.5 vs Grok 4.7: price, context window and capabilities
Claude Sonnet 5.5 (anthropic/claude-sonnet-5.5) from Anthropic and Grok 4.7 (x-ai/grok-4.7) from SpaceXAI are both multimodal language models on the OceanToken API. Claude Sonnet 5.5 costs less for input: $1.80 against $2.00 per 1M input tokens (10% less); Grok 4.7 costs less for output: $6.00 against $9.00 per 1M output tokens (33% less). Claude Sonnet 5.5 is 10% off its official price on OceanToken, for every account. Claude Sonnet 5.5 has the larger context window: 1M tokens (1,000,000) against 500K (500,000) for Grok 4.7. Both support tool calling, reasoning, structured outputs, image input and file input.
Side by side
| Spec | Claude Sonnet 5.5 −10% | Grok 4.7 |
|---|---|---|
| Model | Claude Sonnet 5.5anthropic/ | Grok 4.7x- |
| Publisher | Anthropic | SpaceXAI |
| Kind | Text & vision | Text & vision |
| Context window | 1M tokens1,000,000 | 500K tokens500,000 |
| Input price | $1.80 / 1M tokens | $2.00 / 1M tokens |
| Output price | $9.00 / 1M tokens | $6.00 / 1M tokens |
| Cached input price | $0.10 / 1M tokens | $0.50 / 1M tokens |
| Cache write price | $2.50 / 1M tokens | – |
| Web search price | $0.01 / search | $0.005 / search |
| Discount (vs official, top tier) | −10% | — |
| Inputs | text, images and files | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Price depends on the mix: Claude Sonnet 5.5 costs less for input and Grok 4.7 for output, so estimate both on your own volume of input tokens and output tokens.
- Choose Claude Sonnet 5.5 for the longest inputs: its context window holds 1M tokens against 500K for Grok 4.7.
- Both list the same capabilities: tool calling, reasoning, structured outputs, image input and file input.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key Claude Sonnet 5.5 Grok 4.7
Frequently asked questions
Which is cheaper, Claude Sonnet 5.5 or Grok 4.7?
It depends on the mix of tokens. Claude Sonnet 5.5 costs less for input: $1.80 against $2.00 per 1M input tokens (10% less); Grok 4.7 costs less for output: $6.00 against $9.00 per 1M output tokens (33% less). Claude Sonnet 5.5 is 10% off its official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, Claude Sonnet 5.5 or Grok 4.7?
Claude Sonnet 5.5. Claude Sonnet 5.5 has the larger context window: 1M tokens (1,000,000) against 500K (500,000) for Grok 4.7.
Can I call both Claude Sonnet 5.5 and Grok 4.7 with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id anthropic/claude-sonnet-5.5 or x-ai/grok-4.7.
Models and publishers
Claude Sonnet 5.5 · Grok 4.7 · All Anthropic models · All SpaceXAI models
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