Claude Haiku 5.5 vs Mercury 3
Detailed technical comparison between Claude Haiku 5.5 (Anthropic) and Mercury 3 (Inception AI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
Tie
Equal CapacityTie
Equal CapabilityTie
Equal SpeedTie
Equal PricingClaude Haiku 5.5
Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...
Mercury 3
Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date. It is suited for agentic workflows and real-time applications where latency compounds, such...
Technical Specifications
🏆 = Superior Spec| Specification | Claude Haiku 5.5 | Mercury 3 |
|---|---|---|
| Provider | Anthropic | Inception AI |
| Context Window | 1,000,000 tokens | 1,000,000 tokens |
| Agent Suitability | Not yet benchmarked | Not yet benchmarked |
| Time to First Token (TTFT) | No public TTFT data | No public TTFT data |
| Deployment Model | managed api | managed api |
| Production Stability | Stable release | Not verified |
| API Available | Yes | Yes |
| Released Date | 2026-10-07 | 2026-10-16 |
API Pricing Comparison
Input Price per Million Tokens
Claude Haiku 5.5
$0.10
Mercury 3
$0.10
Output Price per Million Tokens
Claude Haiku 5.5
$0.50
Mercury 3
$0.35
💡 Cost Ratio: Both models offer identical input token pricing ($0.10 / MTok).
Want to test both models live?
Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
Claude Haiku 5.5 Quirks & Gotchas
No developer gotchas reported.
Mercury 3 Quirks & Gotchas
No developer gotchas reported.
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