Key Takeaways
Claude Haiku 4.5 wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
GPT-5.2 Pro wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Better at math
Price Advantage
Claude Haiku 4.5
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
Claude Haiku 4.5
Pricing Comparison
Price Comparison
| Metric | Claude Haiku 4.5 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $1.00 | $10.50 | Claude Haiku 4.5 |
| Output (per 1M tokens) | $5.00 | $84.00 | Claude Haiku 4.5 |
| Cache Read (per 1M) | $0.10 | N/A | Claude Haiku 4.5 |
| Cache Write (per 1M) | $1.25 | N/A | Claude Haiku 4.5 |
Using a 3:1 input/output ratio, Claude Haiku 4.5 is 93% cheaper overall.
Claude Haiku 4.5 Providers
No provider data available
GPT-5.2 Pro Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
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Claude Haiku 4.5 Wins
6
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | Claude Haiku 4.5 | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 31.1 | 51.3 | |
Coding Index Code generation & understanding | 29.6 | 48.7 | |
Math Index Mathematical reasoning | 39.0 | 99.0 | |
MMLU Pro Academic knowledge | 80.0 | 87.4 | |
GPQA Graduate-level science | 64.6 | 90.3 | |
LiveCodeBench Competitive programming | 51.1 | 88.9 |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
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Claude Haiku 4.5
Other models
Context & Performance
Context Window
Claude Haiku 4.5
200,000
tokens
GPT-5.2 Pro
400,000
tokens
GPT-5.2 Pro has a 50% larger context window.
Speed Performance
| Metric | Claude Haiku 4.5 | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 113.2 tok/s | 65.7 tok/s | |
| Time to First Token | 0.42s | 74.76s |
Claude Haiku 4.5 responds 72% faster on average.
Capabilities
Feature Comparison
| Feature | Claude Haiku 4.5 | GPT-5.2 Pro |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Claude Haiku 4.5 | GPT-5.2 Pro |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | OpenAI |
| Released | Oct 2025 | Dec 2025 |
Claude Haiku 4.5 Modalities
Input
imagetext
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text