Claude Haiku 4.5 vs GPT-5.4
Pricing, benchmarks, and use case comparison
Quick take
- •Claude Haiku 4.5 is meaningfully stronger at speed (98 vs 66 on our capability index).
- •GPT-5.4 is meaningfully stronger at long context (92 vs 70).
- •Claude Haiku 4.5 is 60% cheaper on input tokens, which compounds fast on high-volume or agentic workloads.
- •Claude Haiku 4.5 has a 200K context window vs 1,050,000 tokens (128,000 max output) - better for whole-repo or long-document work.
Specs comparison
| Claude Haiku 4.5 | GPT-5.4 | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Type | Closed source | Closed source |
| Context window | ✓200K | 1,050,000 tokens (128,000 max output) |
| Input / 1M tokens | ✓$1.00 | $2.50 |
| Output / 1M tokens | $5.00 | $15.00 |
| Release date | 2025-10 | 2026-03 |
Benchmarks
| Benchmark | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
| SWE-bench Verified | 73.3% | - |
| GPQA | 64.6% | - |
| MMLU Pro | 80.0% | - |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Claude Haiku 4.5 if...
- →You need high throughput and low latency at minimal cost
- →You are fanning out many parallel sub-agents or worker calls
- →You want solid coding/computer-use quality without Opus/Sonnet pricing
- →Your task fits comfortably within a 200K context window
Choose GPT-5.4 if...
- →Large-context tasks where GPT-5.5-level frontier reasoning is not required
- →Cost-conscious production workloads that still need strong capability
- →Migrating from GPT-5.4-based systems where behavior is already tuned