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 OpenAI: GPT-3.5 Turbo (older v0613)
Anthropic: Claude Opus 4.5 (batch) wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4.5 (batch) | OpenAI: GPT-3.5 Turbo (older v0613) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 4K | 🏆 Anthropic: Claude Opus 4.5 (batch) |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.50 | $1.00 | 🏆 OpenAI: GPT-3.5 Turbo (older v0613) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.50 | $2.00 | 🏆 OpenAI: GPT-3.5 Turbo (older v0613) |
| 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 OpenAI: GPT-3.5 Turbo (older v0613)?
Anthropic: Claude Opus 4.5 (batch) 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 OpenAI: GPT-3.5 Turbo (older v0613)?
Input: $2.50 vs $1.00 per 1M tokens. Output: $12.50 vs $2.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.5 (batch) and OpenAI: GPT-3.5 Turbo (older v0613) support?
Anthropic: Claude Opus 4.5 (batch) supports up to 200K tokens. OpenAI: GPT-3.5 Turbo (older v0613) supports up to 4K tokens.
Do both Anthropic: Claude Opus 4.5 (batch) and OpenAI: GPT-3.5 Turbo (older v0613) support tool calling?
Anthropic: Claude Opus 4.5 (batch): yes. OpenAI: GPT-3.5 Turbo (older v0613): yes.