Claude Haiku 4.5 vs Gemini 1.5 Pro: Detailed Comparison

Choosing between Claude Haiku 4.5 (Anthropic) and Gemini 1.5 Pro (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 $1.25/M for Gemini 1.5 Pro; context windows are 200K vs 2.0M tokens. Detailed breakdown below.

Side-by-side specs

SpecClaude Haiku 4.5Gemini 1.5 Pro
ProviderAnthropicGoogle
Released2025-10-012024-02-15
Input price $1.00/M $1.25/M
Output price $5.00/M $5.00/M
Cached input $0.1000/M $0.3100/M
Context window 200K 2.0M
Max output 16K 8K
Modalities text image text image audio video
Tokenizer claude-3 gemini

Capability matrix

CapabilityClaude Haiku 4.5Gemini 1.5 Pro
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 4.5Gemini 1.5 ProCheaper by
Standard chat (1K / 500) $0.003500 $0.003750 Claude Haiku 4.5 by $0.000250
RAG (4K / 500) $0.006500 $0.007500 Claude Haiku 4.5 by $0.001000
Long doc (20K / 1K) $0.025000 $0.030000 Claude Haiku 4.5 by $0.005000
Very long context (100K / 2K) $0.107500 $0.132500 Claude Haiku 4.5 by $0.025000

When to choose Claude Haiku 4.5 over Gemini 1.5 Pro

  • Per-token input cost is 20% lower — meaningful for high-volume workloads.
  • Supports tool use — Gemini 1.5 Pro does not.

When to choose Gemini 1.5 Pro over Claude Haiku 4.5

  • Larger context window (2.0M vs 200K).
  • Supports audio — Claude Haiku 4.5 does not.
  • Supports video — Claude Haiku 4.5 does not.

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