GPT-4.1 Mini vs Claude 3.5 Haiku
Compare pricing, context windows, and strengths for GPT-4.1 Mini by OpenAI and Claude 3.5 Haiku by Anthropic - and see how to put either to work in Appaca.
GPT-4.1 Mini
Smaller, faster version of GPT-4.1 with low latency, strong instruction following, and a large 1M-token context window optimized for lightweight tasks.
View GPT-4.1 MiniClaude 3.5 Haiku
A fast, affordable model matching Claude 3 Opus on many tasks while delivering major improvements in coding, accuracy, and tool use.
View Claude 3.5 HaikuGPT-4.1 Mini vs Claude 3.5 Haiku at a glance
Specs and pricing side by side, from the Appaca AI models directory.
| Spec | GPT-4.1 Mini | Claude 3.5 Haiku |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Model type | Text | Text |
| Context window | 1.05M tokens | 200K tokens |
| Input price | $0.4 / 1M tokens | $0.8 / 1M tokens |
| Output price | $1.6 / 1M tokens | $4 / 1M tokens |
| Status | Superseded by GPT-5 Mini | Superseded by Claude 4.5 Haiku |
How GPT-4.1 Mini and Claude 3.5 Haiku differ
What the numbers mean in practice when choosing between GPT-4.1 Mini and Claude 3.5 Haiku.
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GPT-4.1 Mini is 50% cheaper on input tokens ($0.4 vs $0.8 per million), which adds up quickly in document-heavy workloads.
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GPT-4.1 Mini is 60% cheaper on output tokens ($1.6 vs $4 per million) - the bigger factor for tools that generate long documents.
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GPT-4.1 Mini's 1.05M tokens context window is roughly 5.2x larger than Claude 3.5 Haiku's 200K tokens, so it can work across bigger codebases, contracts, or archives in one pass.
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GPT-4.1 Mini has been superseded by GPT-5 Mini - for new builds, consider the newer model first.
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Claude 3.5 Haiku has been superseded by Claude 4.5 Haiku - for new builds, consider the newer model first.
Strengths side by side
Where each model shines, according to benchmarks and provider positioning.
GPT-4.1 Mini
1. Fast, Lightweight, and Cost-Efficient
- Designed for speed with low latency, making it ideal for high-volume, real-time applications.
- More affordable than larger GPT-4.1 and GPT-5 models, enabling scalable deployments.
2. Strong Instruction Following
- Excels at following structured instructions and producing concise, deterministic outputs.
- Suitable for assistants, command-style interfaces, and tools that require stable, predictable behavior.
3. Reliable Tool Calling & Structured Outputs
- Built with strong support for:
- Function calling
- Structured outputs (JSON, typed objects)
- Systematic workflows
- Ideal for automation, reasoning over parameters, and multi-step tool pipelines.
4. Multimodal Input (Text + Image)
- Accepts both text and image as input.
- Useful for tasks such as:
- Image captioning
- UI element reading
- Visual question answering
5. Text-Only Output for Clarity
- Outputs text only, ensuring clean and consistent results for:
- Data extraction
- Summaries
- Code comments
- Chat responses
6. Massive 1M-Token Context Window
- Supports 1,047,576 tokens, enabling:
- Long documents or books
- Large codebases
- Extensive conversation memory
- Great for long-context reasoning without requiring chunking.
7. Practical for Everyday AI Applications
- Sweet spot for:
- Customer support agents
- Content rewriting
- Lightweight analysis
- Classification and tagging
- Workflow assistants
- Recommended primarily for simpler use cases, with GPT-5 Mini suggested for more complex tasks.
8. Broad API Support
- Available across:
- Chat Completions
- Responses
- Realtime
- Assistants
- Other major API endpoints
- Compatible with long-context modes for large-scale retrieval and processing.
Claude 3.5 Haiku
1. Intelligence & Benchmark Performance
- Matches Claude 3 Opus (previous largest model) on many intelligence tasks.
- Surpasses Claude 3 Opus on multiple evaluations despite being a smaller, faster model.
- Major improvements across every skill category vs previous Haiku.
2. Coding Strength
Scores 40.6% on SWE-bench Verified, outperforming:
- Claude 3.5 Sonnet (original version)
- GPT-4o
- Many agent-driven systems
Excellent for engineering assistants, agent coding tasks, and bug fixing.
3. Speed & Latency
- Same speed class as Claude 3 Haiku (ultra-fast).
- Ideal for real-time interactions, high request volumes, and UI responsiveness.
4. Tool Use & Instruction Following
- Better at following instructions than previous Haiku.
- Stronger at tool use accuracy, making it reliable for agents and workflows.
5. Best Use Cases
- High-volume, low-latency tasks
- User-facing products
- Sub-agent tasks in larger workflows
- Processing large structured datasets (pricing, inventory, purchase history)
- Rapid content or code generation where speed matters
Use GPT-4.1 Mini or Claude 3.5 Haiku - or both
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-4.1 Mini or Claude 3.5 Haiku - connected to your real data and ready for your whole team. No code, no deployment.
Describe it, and it's built
Tell the Appaca agent the internal tool you need and it builds a working app powered by GPT-4.1 Mini or Claude 3.5 Haiku. No code, no API keys, no deployment.
Switch models without rebuilding
Start on GPT-4.1 Mini, test the same tool on Claude 3.5 Haiku, and keep whichever performs better - the rest of your app stays exactly as it is.
Automated for the whole team
Schedule tools to run on autopilot - daily digests, weekly reports, real-time triggers - and share them with your whole team from one workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-4.1 Mini or Claude 3.5 Haiku - connected to the tools you already use.
Related comparisons
See how GPT-4.1 Mini and Claude 3.5 Haiku stack up against other models in the directory.
FAQs
GPT-4.1 Mini is generally cheaper: $0.4 input / $1.6 output per million tokens, versus $0.8 / $4 for Claude 3.5 Haiku. Actual cost depends on how many tokens your workload reads and writes.
GPT-4.1 Mini has the larger context window at 1.05M tokens, compared to 200K tokens for Claude 3.5 Haiku. A larger window means the model can consider more text at once - useful for long contracts, codebases, or months of records.
It depends on the job. Compare the pricing, context window, and strengths above against your workload - and remember the choice isn't permanent. In Appaca you can build a tool on GPT-4.1 Mini, test the same tool on Claude 3.5 Haiku, and switch at any time without rebuilding anything.
Yes. Appaca is a no-code AI workspace: describe the internal tool your team needs and the Appaca agent builds it as a working app powered by GPT-4.1 Mini, Claude 3.5 Haiku, or any other model in the directory - with a built-in database, team access, and integrations. No API keys to wire up and nothing to deploy.
Build AI tools with GPT-4.1 Mini or Claude 3.5 Haiku
Describe the tool your team needs and get a working app powered by the model you choose - with a built-in database, team access, and integrations. No code, no deployment.