Claude Haiku 4.5 vs Gemini 2.5 Flash: Detailed Comparison
Choosing between Claude Haiku 4.5 (Anthropic) and
Gemini 2.5 Flash (Google) comes down to three things:
per-token pricing, context window, and which capability matters most for your workload.
Claude Haiku 4.5 costs $1.00/M input vs
$0.30/M for Gemini 2.5 Flash;
context windows are 200K vs
1.0M tokens. Detailed breakdown below.
Side-by-side specs
| Spec | Claude Haiku 4.5 | Gemini 2.5 Flash |
|---|
| Provider | Anthropic | Google |
|---|
| Released | 2025-10-01 | 2025-04-09 |
|---|
| Input price |
$1.00/M |
$0.30/M |
| Output price |
$5.00/M |
$2.50/M |
| Cached input |
$0.1000/M |
$0.0750/M |
| Context window |
200K |
1.0M |
| Max output |
16K |
66K |
| Modalities |
text image |
text image audio video |
| Tokenizer |
claude-3 |
gemini |
Capability matrix
| Capability | Claude Haiku 4.5 | Gemini 2.5 Flash |
|---|
| function calling |
Yes |
Yes |
| json mode |
Yes |
Yes |
| vision |
Yes |
Yes |
| streaming |
Yes |
Yes |
| tool use |
Yes |
No |
| audio |
No |
Yes |
| video |
No |
Yes |
Per-call cost on typical workloads
| Workload (in/out tokens) | Claude Haiku 4.5 | Gemini 2.5 Flash | Cheaper by |
|---|
| Standard chat (1K / 500) |
$0.003500 |
$0.001550 |
Gemini 2.5 Flash by $0.001950 |
| RAG (4K / 500) |
$0.006500 |
$0.002450 |
Gemini 2.5 Flash by $0.004050 |
| Long doc (20K / 1K) |
$0.025000 |
$0.008500 |
Gemini 2.5 Flash by $0.016500 |
| Very long context (100K / 2K) |
$0.107500 |
$0.033750 |
Gemini 2.5 Flash by $0.073750 |
When to choose Claude Haiku 4.5 over Gemini 2.5 Flash
- Supports tool use — Gemini 2.5 Flash does not.
When to choose Gemini 2.5 Flash over Claude Haiku 4.5
- Per-token input cost is 70% lower than Claude Haiku 4.5.
- Larger context window (1.0M vs 200K).
- Supports audio — Claude Haiku 4.5 does not.
- Supports video — Claude Haiku 4.5 does not.
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