Claude Haiku 4.5 vs ERNIE 4.5 Pro: which model should you choose?
We compared Claude Haiku 4.5 and ERNIE 4.5 Pro on price, context window and 12 benchmarks. ERNIE 4.5 Pro has the stronger average benchmark score; ERNIE 4.5 Pro is cheaper on a blended 3:1 basis.
Claude Haiku 4.5
Claude Haiku 4.5 is a multimodal model from Anthropic. It offers a 1,000,000-token context window, costs $13.86 per million input tokens and $74.67 per million output tokens, and averages 79.4 across the index's benchmark suite.
- Input
- $13.86 / 1M
- Output
- $74.67 / 1M
- Context
- 1,000,000
- Avg score
- 79.4
- Open weights
- No
ERNIE 4.5 Pro
ERNIE 4.5 Pro is a multimodal model from Baidu. It offers a 1,000,000-token context window, costs $13.89 per million input tokens and $65.19 per million output tokens, and averages 80.5 across the index's benchmark suite.
- Input
- $13.89 / 1M
- Output
- $65.19 / 1M
- Context
- 1,000,000
- Avg score
- 80.5
- Open weights
- No
Specification comparison
| Spec | Claude Haiku 4.5 | ERNIE 4.5 Pro | Edge |
|---|---|---|---|
| Input price / 1M | $13.86 | $13.89 | A |
| Output price / 1M | $74.67 | $65.19 | B |
| Context window | 1,000,000 | 1,000,000 | Tie |
| Max output | 128,000 | 32,768 | A |
| Average score | 79.4 | 80.5 | B |
| Arena Elo | 1421.8 | 1414.3 | A |
| Open weights | No | No | Tie |
Benchmark comparison
Claude Haiku 4.5 wins 4, ERNIE 4.5 Pro wins 8, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Claude Haiku 4.5 | ERNIE 4.5 Pro | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 84.1 | 80.3 | 3.8 | Claude Haiku 4.5 |
| GPQA Diamond | 74.1 | 74.7 | 0.6 | ERNIE 4.5 Pro |
| SWE-bench Verified | 69.2 | 66.5 | 2.7 | Claude Haiku 4.5 |
| HumanEval | 84.7 | 86.9 | 2.2 | ERNIE 4.5 Pro |
| MATH-500 | 81.4 | 87.2 | 5.8 | ERNIE 4.5 Pro |
| AIME 2025 | 76.5 | 76.3 | 0.2 | Claude Haiku 4.5 |
| LiveCodeBench | 71.6 | 76.4 | 4.8 | ERNIE 4.5 Pro |
| IFEval | 85.2 | 86.0 | 0.8 | ERNIE 4.5 Pro |
| TruthfulQA | 79.6 | 83.1 | 3.5 | ERNIE 4.5 Pro |
| HellaSwag | 89.6 | 90.2 | 0.6 | ERNIE 4.5 Pro |
| MMMU | 77.6 | 78.4 | 0.8 | ERNIE 4.5 Pro |
| Arena Elo | 1421.8 | 1414.3 | 7.5 | Claude Haiku 4.5 |
Price analysis
On a blended 3:1 input-to-output basis, Claude Haiku 4.5 costs about $29.06 per million tokens and ERNIE 4.5 Pro costs about $26.71. ERNIE 4.5 Pro is roughly 8% cheaper than Claude Haiku 4.5. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Both models list a 1,000,000-token context window. That is enough for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Claude Haiku 4.5 wins 4, ERNIE 4.5 Pro wins 8, and 0 are tied. On the index average, ERNIE 4.5 Pro leads Claude Haiku 4.5 by 1.1 points (80.5 versus 79.4).
The price picture favours ERNIE 4.5 Pro. The context picture is effectively a tie. Those two dimensions often matter more than a few benchmark points once a model is good enough for the task.
If you need a single default, start with ERNIE 4.5 Pro for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Claude Haiku 4.5 if
- You need the larger 128,000-token output limit.
Choose ERNIE 4.5 Pro if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
FAQ
Is Claude Haiku 4.5 better than ERNIE 4.5 Pro?
On the index average, ERNIE 4.5 Pro leads Claude Haiku 4.5 by 1.1 points (80.5 versus 79.4). The better choice depends on price, context and your task. Claude Haiku 4.5 wins 4 benchmarks, ERNIE 4.5 Pro wins 8.
Which is cheaper, Claude Haiku 4.5 or ERNIE 4.5 Pro?
ERNIE 4.5 Pro is cheaper on a blended 3:1 basis at about $26.71 per million tokens, versus $29.06 for Claude Haiku 4.5.
Which has the larger context window?
Both models list a 1,000,000-token context window.
Are these models open weights?
Claude Haiku 4.5 is proprietary; ERNIE 4.5 Pro is proprietary.
Which should I choose for production?
If you need a single default, start with ERNIE 4.5 Pro for quality-sensitive work, and check whether its price holds at your expected volume before committing.