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OpenRouter details AI performance and cost comparisons for Claude 5.5 models
OpenRouter compares Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5 on coding and benchmark tests, showing similar reliability with wide cost differences.
Summary
OpenRouter evaluated Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5 across coding tasks and bug-fix challenges using Claude Code. All models passed every test successfully, meaning the main differentiator between them was cost. The post outlines pricing details per million tokens and configuration steps for routing tasks across models via OpenRouter.
What changed
- OpenRouter published benchmark and coding test comparisons for Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5.
- The analysis found all three AI models passed coding attempts and solved repository bug-fix runs.
- OpenRouter documented environment variables for assigning different Claude 5.5 tiers to specific roles inside Claude Code.
Availability
Available now“Anthropic released Opus 5.5 on September 22, 2026, Sonnet 5.5 on September 28, and Haiku 5.5 on October 7.”
Pricing
| Plan | Price, as stated | Checked |
|---|---|---|
| Opus 5.5 input per million tokens | $4.00“Input, per million tokens $4.00 $2.00 $0.10” source | |
| Opus 5.5 output per million tokens | $20.00“Output, per million tokens $20.00 $10.00 $0.50” source | |
| Opus 5.5 cache read per million tokens | $0.20“Cache read, per million tokens $0.20 $0.10 $0.01” source | |
| Sonnet 5.5 input per million tokens | $2.00“Input, per million tokens $4.00 $2.00 $0.10” source | |
| Sonnet 5.5 output per million tokens | $10.00“Output, per million tokens $20.00 $10.00 $0.50” source | |
| Sonnet 5.5 cache read per million tokens | $0.10“Cache read, per million tokens $0.20 $0.10 $0.01” source | |
| Haiku 5.5 input per million tokens | $0.10“Input, per million tokens $4.00 $2.00 $0.10” source | |
| Haiku 5.5 output per million tokens | $0.50“Output, per million tokens $20.00 $10.00 $0.50” source |
Prices as stated by the company; we don’t convert or estimate.
Founder takeaway
Review the per-million-token costs for Opus 5.5, Sonnet 5.5, and Haiku 5.5 to route your routine API tasks to cheaper tiers.
Source
Researched and drafted with AI from the official sources above, then checked automatically before publishing. Spotted a mistake? Tell us.
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