Fireworks AI launched day-zero US-hosted serverless inference for GLM-5.3, highlighting a 50% improvement on Code Bench and state-of-the-art results in open-weight cyber defense and long-horizon agents.

Key Takeaways

  • ✓Instant day-zero serverless API access for teams without dedicated multi-GPU infrastructure for 744B MoEs;
  • ✓Optimized specifically for complex code refactoring, cyber security benchmarks, and long-horizon tasks;
  • ✓Proprietary inference stack delivers sustained high tokens-per-second streaming performance.
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Key Decision Metrics at a Glance

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GLM-5.3 · in: $1.4 / out: $4.4
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🛠️ Ecosystem & IDERules
Cursor · Claude Code · API
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