Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding…
Model details →Anthropic: Claude Opus 4.5 (batch) vs Relace: Relace Search
Relace: Relace Search wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
The relace-search model uses 4-12 `view_file` and `grep` tools in parallel to explore a codebase and return relevant files to the user request. In contrast to RAG, relace-search performs agentic...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4.5 (batch) | Relace: Relace Search | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 256K | 🏆 Relace: Relace Search |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.50 | $1.00 | 🏆 Relace: Relace Search |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.50 | $3.00 | 🏆 Relace: Relace Search |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 Anthropic: Claude Opus 4.5 (batch) |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 Anthropic: Claude Opus 4.5 (batch) |
Frequently asked questions
Is Anthropic: Claude Opus 4.5 (batch) better than Relace: Relace Search?
Relace: Relace Search wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Opus 4.5 (batch) and Relace: Relace Search?
Input: $2.50 vs $1.00 per 1M tokens. Output: $12.50 vs $3.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.5 (batch) and Relace: Relace Search support?
Anthropic: Claude Opus 4.5 (batch) supports up to 200K tokens. Relace: Relace Search supports up to 256K tokens.
Do both Anthropic: Claude Opus 4.5 (batch) and Relace: Relace Search support tool calling?
Anthropic: Claude Opus 4.5 (batch): yes. Relace: Relace Search: yes.