Claude Haiku 4.5 vs GPT-5.4 Nano
Complete pricing and performance comparison between Anthropic's Claude Haiku 4.5 and OpenAI's GPT-5.4 Nano.
Quick Verdict
Cheaper
GPT-5.4 Nano
5.0x cheaper input, 4.0x cheaper output
Larger Context
GPT-5.4 Nano
400K vs 200K
Pricing Comparison
| Spec | Claude Haiku 4.5 | GPT-5.4 Nano | Difference |
|---|---|---|---|
| Provider | Anthropic | OpenAI | |
| Input / 1M tokens | $1 | $0.2 | GPT-5.4 Nano is 80% more expensive |
| Output / 1M tokens | $5 | $1.25 | GPT-5.4 Nano is 75% more expensive |
| Context Window | 200K | 400K | 2x difference |
| Max Output | 8K | 128K | |
| Tokenizer | cl100k_base | o200k_base |
Performance Benchmarks
| Metric | Claude Haiku 4.5 | GPT-5.4 Nano | Winner |
|---|---|---|---|
| Quality Index | 31 | -- | N/A |
| Output Speed | 93 tok/s | -- | N/A |
| Value (Quality/$) | 31.1 | -- | 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-5.4 Nano | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0025 | $0.0006 | GPT-5.4 Nano saves $0.0019 |
10 requests 10K in / 3K out | $0.025 | $0.0057 | GPT-5.4 Nano saves $0.019 |
100 requests 100K in / 30K out | $0.250 | $0.058 | GPT-5.4 Nano saves $0.193 |
1,000 requests 1M in / 300K out | $2.50 | $0.575 | GPT-5.4 Nano saves $1.93 |
10,000 requests 10M in / 3M out | $25.00 | $5.75 | GPT-5.4 Nano saves $19.25 |
1M requests/mo 1B in / 300M out | $2500.00 | $575.00 | GPT-5.4 Nano saves $1925.00 |
Pros & Cons
Claude Haiku 4.5 Strengths
Part of the Anthropic ecosystem
GPT-5.4 Nano Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (400K vs 200K)
- +Higher max output tokens
When to Use Each Model
Choose Claude Haiku 4.5 for
- →Projects already integrated with Anthropic's ecosystem
Choose GPT-5.4 Nano for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
Frequently Asked Questions
Which is cheaper, Claude Haiku 4.5 or GPT-5.4 Nano?
For input tokens, GPT-5.4 Nano is 5.0x cheaper at $0.2/1M tokens. For output tokens, GPT-5.4 Nano is 4.0x cheaper at $1.25/1M tokens. At typical usage (1M input + 300K output), Claude Haiku 4.5 costs $2.50 vs GPT-5.4 Nano at $0.575.
What's the context window difference?
Claude Haiku 4.5 supports 200K context (200,000 tokens), while GPT-5.4 Nano supports 400K (400,000 tokens). GPT-5.4 Nano can handle 2x more context in a single request.
Which model has better benchmarks?
When should I choose Claude Haiku 4.5 over GPT-5.4 Nano?
Choose Claude Haiku 4.5 when you need: a Anthropic ecosystem model. Choose GPT-5.4 Nano when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (400K vs 200K), Higher max output tokens.
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-5.4 Nano = $5.75. At 10K input + 1K output per request (longer conversations): Claude Haiku 4.5 = $150.00, GPT-5.4 Nano = $32.50.
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