High-volume, cost-sensitive work
Choose Claude Haiku 5.5
Claude Haiku 5.5 costs 24% less on a typical mix of three input tokens for every output token ($0.20 against $0.26 per million tokens).
Claude Haiku 5.5 vs GPT-4o Mini: price, context and capabilities
Choose Claude Haiku 5.5 for high-volume, cost-sensitive work, writing and code generation, reused prompts and documents (RAG, agents), very long inputs, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
In short
- Claude Haiku 5.5 is 24% cheaper than GPT-4o Mini at the headline price ($0.20 / 1M tokens vs $0.2625 / 1M tokens).
- Claude Haiku 5.5 reads more per request: 1M tokens against 128k.
- Claude Haiku 5.5 is the newer model (October 2026, against Jul 18, 2024).
- 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 Claude Haiku 5.5
Claude Haiku 5.5 charges $0.50 per million output tokens, against $0.60 for GPT-4o Mini. 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 $0.08 for GPT-4o Mini.
Very long inputs
Choose Claude Haiku 5.5
Claude Haiku 5.5 reads up to 1M tokens per request, against 128k for GPT-4o Mini.
Latest release
Choose Claude Haiku 5.5
Claude Haiku 5.5 is the newer release (October 2026, against Jul 18, 2024 for GPT-4o Mini).
Most recent knowledge
Choose Claude Haiku 5.5
Claude Haiku 5.5 was trained on data up to June 2026, against October 2023 for GPT-4o Mini.
Monthly cost at three volumes
| Volume | Claude Haiku 5.5 | GPT-4o Mini | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $0.23 | $0.30 | Claude Haiku 5.5, $0.08 less |
| Production: 20M input, 5M output tokens | $4.50 | $6.00 | Claude Haiku 5.5, $1.50 less |
| Scale: 500M input, 100M output tokens | $100.00 | $135.00 | Claude Haiku 5.5, $35.00 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Claude Haiku 5.5 | GPT-4o Mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| Headline price | $0.20 / 1M tokens | $0.2625 / 1M tokens |
| Input | $0.10 / 1M tokens | $0.15 / 1M tokens |
| Output | $0.50 / 1M tokens | $0.60 / 1M tokens |
| Cached input | $0.01 / 1M tokens | $0.075 / 1M tokens |
| Context window | 1M | 128k |
| Max output | 128k | 16k |
| Released | October 2026 | Jul 18, 2024 |
| Knowledge cutoff | June 2026 | October 2023 |
| 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-4o-mini |
Benchmarks side by side
Leader in bold.
| Benchmark | Claude Haiku 5.5 | GPT-4o Mini |
|---|---|---|
| Humanity's Last Exam | 44.4% | 4.2% |
| Intelligence Index | 43.4 | No data |
| SciCode | 55% | No data |
| Long-context reasoning (AA-LCR) | 82.7% | No data |
| GPQA Diamond | No data | 42.6% |
| IFBench (instruction following) | No data | 31% |
| MMMU-Pro (visual reasoning) | No data | 41.5% |
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-4o Mini?
Choose Claude Haiku 5.5 for high-volume, cost-sensitive work, writing and code generation, reused prompts and documents (RAG, agents), very long inputs, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
Which is cheaper, Claude Haiku 5.5 or GPT-4o Mini?
Claude Haiku 5.5 is 24% cheaper than GPT-4o Mini at the headline price ($0.20 / 1M tokens vs $0.2625 / 1M tokens).
Which has the larger context window, Claude Haiku 5.5 or GPT-4o Mini?
Claude Haiku 5.5 reads more per request: 1M tokens against 128k.
What is the difference between Claude Haiku 5.5 and GPT-4o Mini?
Claude Haiku 5.5 is made by Anthropic and GPT-4o Mini by OpenAI. Claude Haiku 5.5 is 24% cheaper than GPT-4o Mini at the headline price ($0.20 / 1M tokens vs $0.2625 / 1M tokens). Claude Haiku 5.5 reads more per request: 1M tokens against 128k. Claude Haiku 5.5 is the newer model (October 2026, against Jul 18, 2024). Only Claude Haiku 5.5 offers reasoning.
How much do Claude Haiku 5.5 and GPT-4o Mini cost per month?
At 20 million input and 5 million output tokens a month, Claude Haiku 5.5 costs $4.50 and GPT-4o Mini costs $6.00, at standard rates.
Which is newer, Claude Haiku 5.5 or GPT-4o Mini?
Claude Haiku 5.5 was released on October 2026 and GPT-4o Mini on Jul 18, 2024.