Claude Haiku 4.5 vs Gemini 2.5 Flash
Complete pricing and performance comparison between Anthropic's Claude Haiku 4.5 and Google's Gemini 2.5 Flash.
Quick Verdict
Cheaper
Gemini 2.5 Flash
3.3x cheaper input, 2.0x cheaper output
Larger Context
Gemini 2.5 Flash
1.0M vs 200K
Higher Quality
Claude Haiku 4.5
Score: 31 vs 21
Faster
Gemini 2.5 Flash
231 vs 120 tok/s
Pricing Comparison
| Spec | Claude Haiku 4.5 | Gemini 2.5 Flash | Difference |
|---|---|---|---|
| Provider | Anthropic | ||
| Input / 1M tokens | $1 | $0.3 | Gemini 2.5 Flash is 70% more expensive |
| Output / 1M tokens | $5 | $2.5 | Gemini 2.5 Flash is 50% more expensive |
| Context Window | 200K | 1.0M | 5x difference |
| Max Output | 8K | 66K |
Performance Benchmarks
| Metric | Claude Haiku 4.5 | Gemini 2.5 Flash | Winner |
|---|---|---|---|
| Quality Index | 31 | 21 | Claude Haiku 4.5 |
| Output Speed | 120 tok/s | 231 tok/s | Gemini 2.5 Flash |
| Time to First Token | 0.46s | 0.42s | Gemini 2.5 Flash |
| Value (Quality/$) | 31.1 | 68.7 | 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 | Gemini 2.5 Flash | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0025 | $0.0010 | Gemini 2.5 Flash saves $0.0014 |
10 requests 10K in / 3K out | $0.025 | $0.010 | Gemini 2.5 Flash saves $0.015 |
100 requests 100K in / 30K out | $0.250 | $0.105 | Gemini 2.5 Flash saves $0.145 |
1,000 requests 1M in / 300K out | $2.50 | $1.05 | Gemini 2.5 Flash saves $1.45 |
10,000 requests 10M in / 3M out | $25.00 | $10.50 | Gemini 2.5 Flash saves $14.50 |
1M requests/mo 1B in / 300M out | $2500.00 | $1050.00 | Gemini 2.5 Flash saves $1450.00 |
Pros & Cons
Claude Haiku 4.5 Strengths
- +Higher quality score (31 vs 21)
Gemini 2.5 Flash Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (1.0M vs 200K)
- +Higher max output tokens
- +Faster output (231 vs 120 tok/s)
- +Lower latency (faster first token)
When to Use Each Model
Choose Claude Haiku 4.5 for
- →Tasks requiring maximum accuracy and reasoning
Choose Gemini 2.5 Flash 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
- →Real-time applications, chat, or autocomplete
Frequently Asked Questions
Which is cheaper, Claude Haiku 4.5 or Gemini 2.5 Flash?
For input tokens, Gemini 2.5 Flash is 3.3x cheaper at $0.3/1M tokens. For output tokens, Gemini 2.5 Flash is 2.0x cheaper at $2.5/1M tokens. At typical usage (1M input + 300K output), Claude Haiku 4.5 costs $2.50 vs Gemini 2.5 Flash at $1.05.
What's the context window difference?
Claude Haiku 4.5 supports 200K context (200,000 tokens), while Gemini 2.5 Flash supports 1.0M (1,048,576 tokens). Gemini 2.5 Flash can handle 5x more context in a single request.
Which model has better benchmarks?
Quality Index: Claude Haiku 4.5 scores 31 vs Gemini 2.5 Flash at 21. Speed: Claude Haiku 4.5 generates 120 tok/s vs Gemini 2.5 Flash at 231 tok/s. Time to first token: Claude Haiku 4.5 at 0.46s vs Gemini 2.5 Flash at 0.42s.
When should I choose Claude Haiku 4.5 over Gemini 2.5 Flash?
Choose Claude Haiku 4.5 when you need: Higher quality score (31 vs 21). Choose Gemini 2.5 Flash when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (1.0M vs 200K), Higher max output tokens, Faster output (231 vs 120 tok/s), Lower latency (faster first token).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Claude Haiku 4.5 = $25.00, Gemini 2.5 Flash = $10.50. At 10K input + 1K output per request (longer conversations): Claude Haiku 4.5 = $150.00, Gemini 2.5 Flash = $55.00.
Related Comparisons
Claude Haiku 4.5 vs GPT-5.4
$1 vs $2.5 per 1M input
Gemini 2.5 Flash vs GPT-5.4
$0.3 vs $2.5 per 1M input
Claude Haiku 4.5 vs GPT-5.4 Mini
$1 vs $0.75 per 1M input
Gemini 2.5 Flash vs GPT-5.4 Mini
$0.3 vs $0.75 per 1M input
Claude Haiku 4.5 vs GPT-5.4 Nano
$1 vs $0.2 per 1M input
Gemini 2.5 Flash vs GPT-5.4 Nano
$0.3 vs $0.2 per 1M input