High-volume, cost-sensitive work
Choose GPT-4.1 nano
GPT-4.1 nano costs 13% less on a typical mix of three input tokens for every output token ($0.18 against $0.20 per million tokens).
Claude Haiku 5.5 vs GPT-4.1 nano: price, context and capabilities
Choose Claude Haiku 5.5 for reused prompts and documents (RAG, agents), reasoning over long documents, the latest release and the most recent knowledge. Choose GPT-4.1 nano for high-volume, cost-sensitive work and writing and code generation.
In short
- GPT-4.1 nano is 13% cheaper than Claude Haiku 5.5 at the headline price ($0.175 / 1M tokens vs $0.20 / 1M tokens).
- GPT-4.1 nano reads more per request: 1.05M tokens against 1M.
- Claude Haiku 5.5 is the newer model (October 2026, against Apr 14, 2025).
- Only Claude Haiku 5.5 offers reasoning.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose GPT-4.1 nano
GPT-4.1 nano charges $0.40 per million output tokens, against $0.50 for Claude Haiku 5.5. Output dominates the bill when answers are long.
Reused prompts and documents (RAG, agents)
Choose Claude Haiku 5.5
Claude Haiku 5.5 charges $0.01 per million cached input tokens, against $0.03 for GPT-4.1 nano.
Reasoning over long documents
Choose Claude Haiku 5.5
Claude Haiku 5.5 scores 82.7% on Long-context reasoning (AA-LCR), against 20.3% for GPT-4.1 nano.
Latest release
Choose Claude Haiku 5.5
Claude Haiku 5.5 is the newer release (October 2026, against Apr 14, 2025 for GPT-4.1 nano).
Most recent knowledge
Choose Claude Haiku 5.5
Claude Haiku 5.5 was trained on data up to June 2026, against June 2024 for GPT-4.1 nano.
Monthly cost at three volumes
| Volume | Claude Haiku 5.5 | GPT-4.1 nano | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $0.23 | $0.20 | GPT-4.1 nano, $0.03 less |
| Production: 20M input, 5M output tokens | $4.50 | $4.00 | GPT-4.1 nano, $0.50 less |
| Scale: 500M input, 100M output tokens | $100.00 | $90.00 | GPT-4.1 nano, $10.00 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Claude Haiku 5.5 | GPT-4.1 nano | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| Headline price | $0.20 / 1M tokens | $0.175 / 1M tokens |
| Input | $0.10 / 1M tokens | $0.10 / 1M tokens |
| Output | $0.50 / 1M tokens | $0.40 / 1M tokens |
| Cached input | $0.01 / 1M tokens | $0.025 / 1M tokens |
| Context window | 1M | 1.05M |
| Max output | 128k | 33k |
| Released | October 2026 | Apr 14, 2025 |
| Knowledge cutoff | June 2026 | June 2024 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | claude-haiku-5-5 | gpt-4.1-nano |
Benchmarks side by side
Leader in bold.
| Benchmark | Claude Haiku 5.5 | GPT-4.1 nano |
|---|---|---|
| Humanity's Last Exam | 44.4% | 3.8% |
| Long-context reasoning (AA-LCR) | 82.7% | 20.3% |
| Intelligence Index | 43.4 | No data |
| SciCode | 55% | No data |
| Terminal-Bench Hard | No data | 3.8% |
| GPQA Diamond | No data | 51.2% |
| IFBench (instruction following) | No data | 32% |
| τ²-Bench (agentic tool use) | No data | 17.3% |
| MMMU-Pro (visual reasoning) | No data | 40.1% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Claude Haiku 5.5 or GPT-4.1 nano?
Choose Claude Haiku 5.5 for reused prompts and documents (RAG, agents), reasoning over long documents, the latest release and the most recent knowledge. Choose GPT-4.1 nano for high-volume, cost-sensitive work and writing and code generation.
Which is cheaper, Claude Haiku 5.5 or GPT-4.1 nano?
GPT-4.1 nano is 13% cheaper than Claude Haiku 5.5 at the headline price ($0.175 / 1M tokens vs $0.20 / 1M tokens).
Which has the larger context window, Claude Haiku 5.5 or GPT-4.1 nano?
GPT-4.1 nano reads more per request: 1.05M tokens against 1M.
What is the difference between Claude Haiku 5.5 and GPT-4.1 nano?
Claude Haiku 5.5 is made by Anthropic and GPT-4.1 nano by OpenAI. GPT-4.1 nano is 13% cheaper than Claude Haiku 5.5 at the headline price ($0.175 / 1M tokens vs $0.20 / 1M tokens). GPT-4.1 nano reads more per request: 1.05M tokens against 1M. Claude Haiku 5.5 is the newer model (October 2026, against Apr 14, 2025). Only Claude Haiku 5.5 offers reasoning.
How much do Claude Haiku 5.5 and GPT-4.1 nano cost per month?
At 20 million input and 5 million output tokens a month, Claude Haiku 5.5 costs $4.50 and GPT-4.1 nano costs $4.00, at standard rates.
Which is newer, Claude Haiku 5.5 or GPT-4.1 nano?
Claude Haiku 5.5 was released on October 2026 and GPT-4.1 nano on Apr 14, 2025.