Which model is better: Claude 3.5 Haiku or GPT-5.6 Terra?

Claude 3.5 Haiku is 46.7% cheaper for input tokens ($0.80 vs. $1.50 per 1M tokens) and $4.00 vs. $6.00 for output tokens (1.9x cost difference). In terms of operational performance, Claude 3.5 Haiku delivers faster response latency with 140ms TTFT (70ms faster than GPT-5.6 Terra). GPT-5.6 Terra leads coding benchmarks at 65.4% SWE-bench vs. 40.6% for Claude 3.5 Haiku.
Verified daily via automated API latency tests and official documentation.

Verified Performance & Unit Economics Delta

Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.

Metric / Dimension Claude 3.5 Haiku GPT-5.6 Terra Net Delta / Advantage
Input Cost / 1M Tokens $0.80 $1.50 Claude 3.5 Haiku is 1.9x cheaper
Output Cost / 1M Tokens $4.00 $6.00 Claude 3.5 Haiku (33.3% lower)
Avg TTFT Response Latency 140ms 210ms Claude 3.5 Haiku (+70ms faster)
SWE-bench Verified (Coding) 40.6% 65.4% GPT-5.6 Terra (+24.8% lead)
Inference Value Score (IVR) 70.4 / 100 72.5 / 100 GPT-5.6 Terra (+2.1 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model your expected production workload across prompt (input) and completion (output) tokens.

Live Calculation Engine
10.0M Tokens
100K 50M 250M 500M+
2.5M Tokens
100K 10M 50M 100M+

Estimated Monthly Spend

Claude 3.5 Haiku $5.45

$0.8/1M in · $4/1M out

GPT-5.6 Terra $67.50

$1.5/1M in · $6/1M out

Projected Monthly Cost Reduction
$62.05 / mo
(91.9% lower cost)
A

When to Choose Claude 3.5 Haiku

Choose Claude 3.5 Haiku when you need High-speed API routing, conversational triage, extraction, and edge agent tasks. and have an infrastructure budget aligned with $0.80/1M tokens.

B

When to Choose GPT-5.6 Terra

Choose GPT-5.6 Terra when you need Mainstream production enterprise workflows, high-throughput developer copilots, and structured data synthesis. and prioritize OpenAI ecosystem integration at $1.50/1M tokens.

Related Questions & Decision Factors

Which is cheaper: Claude 3.5 Haiku or GPT-5.6 Terra?

Claude 3.5 Haiku is cheaper at $0.80/1M input tokens compared to $1.50/1M for GPT-5.6 Terra.

Which model has lower latency: Claude 3.5 Haiku or GPT-5.6 Terra?

Claude 3.5 Haiku delivers faster response times with an average TTFT of 140ms vs 210ms for GPT-5.6 Terra.

When should you choose Claude 3.5 Haiku?

Choose Claude 3.5 Haiku when you need High-speed API routing, conversational triage, extraction, and edge agent tasks. and have an infrastructure budget aligned with $0.80/1M tokens.

When should you choose GPT-5.6 Terra?

Choose GPT-5.6 Terra when you need Mainstream production enterprise workflows, high-throughput developer copilots, and structured data synthesis. and prioritize OpenAI ecosystem integration at $1.50/1M tokens.

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