Claude Haiku 4.5 vs GPT-5
Complete pricing and performance comparison between Anthropic's Claude Haiku 4.5 and OpenAI's GPT-5.
Quick Verdict
Cheaper
Claude Haiku 4.5
1.3x cheaper input, 2.0x cheaper output
Larger Context
GPT-5
400K vs 200K
Higher Quality
GPT-5
Score: 45 vs 31
Faster
Claude Haiku 4.5
125 vs 60 tok/s
Pricing Comparison
| Spec | Claude Haiku 4.5 | GPT-5 | Difference |
|---|---|---|---|
| Provider | Anthropic | OpenAI | |
| Input / 1M tokens | $1 | $1.25 | Claude Haiku 4.5 is 20% more expensive |
| Output / 1M tokens | $5 | $10 | Claude Haiku 4.5 is 50% more expensive |
| Context Window | 200K | 400K | 2x difference |
| Max Output | 8K | 16K | |
| Tokenizer | cl100k_base | o200k_base |
Performance Benchmarks
| Metric | Claude Haiku 4.5 | GPT-5 | Winner |
|---|---|---|---|
| Quality Index | 31 | 45 | GPT-5 |
| Output Speed | 125 tok/s | 60 tok/s | Claude Haiku 4.5 |
| Time to First Token | 0.41s | 117.69s | Claude Haiku 4.5 |
| Value (Quality/$) | 31.1 | 35.7 | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | Claude Haiku 4.5 | GPT-5 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0025 | $0.0042 | Claude Haiku 4.5 saves $0.0017 |
10 requests 10K in / 3K out | $0.025 | $0.042 | Claude Haiku 4.5 saves $0.017 |
100 requests 100K in / 30K out | $0.250 | $0.425 | Claude Haiku 4.5 saves $0.175 |
1,000 requests 1M in / 300K out | $2.50 | $4.25 | Claude Haiku 4.5 saves $1.75 |
10,000 requests 10M in / 3M out | $25.00 | $42.50 | Claude Haiku 4.5 saves $17.50 |
1M requests/mo 1B in / 300M out | $2500.00 | $4250.00 | Claude Haiku 4.5 saves $1750.00 |
Pros & Cons
Claude Haiku 4.5 Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Faster output (125 vs 60 tok/s)
- +Lower latency (faster first token)
GPT-5 Strengths
- +Larger context window (400K vs 200K)
- +Higher max output tokens
- +Higher quality score (45 vs 31)
When to Use Each Model
Choose Claude Haiku 4.5 for
- →Budget-conscious projects where cost is the primary factor
- →Real-time applications, chat, or autocomplete
Choose GPT-5 for
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
- →Tasks requiring maximum accuracy and reasoning
Frequently Asked Questions
Which is cheaper, Claude Haiku 4.5 or GPT-5?
For input tokens, Claude Haiku 4.5 is 1.3x cheaper at $1/1M tokens. For output tokens, Claude Haiku 4.5 is 2.0x cheaper at $5/1M tokens. At typical usage (1M input + 300K output), Claude Haiku 4.5 costs $2.50 vs GPT-5 at $4.25.
What's the context window difference?
Claude Haiku 4.5 supports 200K context (200,000 tokens), while GPT-5 supports 400K (400,000 tokens). GPT-5 can handle 2x more context in a single request.
Which model has better benchmarks?
Quality Index: Claude Haiku 4.5 scores 31 vs GPT-5 at 45. Speed: Claude Haiku 4.5 generates 125 tok/s vs GPT-5 at 60 tok/s. Time to first token: Claude Haiku 4.5 at 0.41s vs GPT-5 at 117.69s.
When should I choose Claude Haiku 4.5 over GPT-5?
Choose Claude Haiku 4.5 when you need: Cheaper input tokens, Cheaper output tokens, Faster output (125 vs 60 tok/s), Lower latency (faster first token). Choose GPT-5 when you need: Larger context window (400K vs 200K), Higher max output tokens, Higher quality score (45 vs 31).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Claude Haiku 4.5 = $25.00, GPT-5 = $42.50. At 10K input + 1K output per request (longer conversations): Claude Haiku 4.5 = $150.00, GPT-5 = $225.00.