Model Deprecations
This page tracks deprecated models and upcoming deprecations. We recommend migrating to newer, more capable models listed in our recommendations.Deprecated models are no longer available through Pulze. Please migrate to recommended alternatives to ensure continued service.
Migration Support
Need help migrating from deprecated models? Contact us at support@pulze.ai to:- Discuss your use cases and requirements
- Identify optimal replacement models
- Test new models before full migration
- Plan smooth transitions for your team
Currently Deprecated Models
These models are no longer available:Anthropic
Claude 3.5 Sonnet (October 22, 2025)
Claude 3.5 Sonnet (October 22, 2025)
Deprecated: October 22, 2025Recommended Alternatives:
- Claude Opus 4.1: Very capable model with highest intelligence
- Claude Sonnet 4.5: Best for complex agents and coding tasks
- Claude Sonnet 4.0: Updated with 1M token context window (up from 200K)
OpenAI
o1-preview
o1-preview
Deprecated: RecentlyRecommended Alternatives:
- GPT-5: Flagship model with 400K context window
- GPT-5 Mini: Cost-efficient with high reasoning capabilities
- o3-deep-research: For complex multi-step research tasks
o1-mini
o1-mini
Deprecated: RecentlyRecommended Alternatives:
- GPT-5 Mini: Cost-efficient with high reasoning capabilities
- GPT-5 Nano: Fastest, most affordable option
Gemini 1.5 Flash
Gemini 1.5 Flash
Deprecated: RecentlyRecommended Alternatives:
- Gemini 2.5 Flash: Best price/performance with thinking capabilities
- Gemini 2.5 Pro: Advanced reasoning with 1M+ context window
Gemini 1.5 Pro
Gemini 1.5 Pro
Deprecated: RecentlyRecommended Alternatives:
- Gemini 2.5 Pro: Advanced reasoning with 1M+ context window
- Gemini 2.5 Flash: Best price/performance with thinking capabilities
Gemini 1.5 Experimental
Gemini 1.5 Experimental
Deprecated: RecentlyRecommended Alternatives:
- Gemini 2.5 Pro: Advanced reasoning with 1M+ context window
- Gemini 2.5 Flash: Best price/performance with thinking capabilities
Groq
DeepSeek R1 Distill
DeepSeek R1 Distill
Deprecated: RecentlyRecommended Alternatives:
- Groq Compound: Integrated tool orchestration
- OpenAI GPT-OSS 120B: Open-weight model with strong performance
Llama 3 Models
Llama 3 Models
Deprecated: RecentlyRecommended Alternatives:
- Llama 4 Maverick: Meta’s latest multimodal flagship
- Llama 4 Scout: Balanced performance and efficiency
- OpenAI GPT-OSS Models: 20B & 120B variants
Fireworks
Llama 3.2
Llama 3.2
Deprecated: RecentlyRecommended Alternatives:
- Llama 4 Models: Via Groq (Maverick & Scout)
- GPT-OSS Series: Via Fireworks
- DeepSeek V3.1 Variants: Via Fireworks
DeepSeek R1
DeepSeek R1
Deprecated: RecentlyRecommended Alternatives:
- DeepSeek V3.1 Variants: Available via Fireworks
- GPT-OSS Series: Available via Fireworks
Phi 3.5
Phi 3.5
Deprecated: RecentlyRecommended Alternatives:
- GPT-5 Nano: For fast, affordable inference
- Gemini 2.5 Flash: Best price/performance
Cohere
Command R
Command R
Deprecated: RecentlyRecommended Alternatives:
- Command A 03-2025: 256K context, 111B parameters
Command R+
Command R+
Deprecated: RecentlyRecommended Alternatives:
- Command A 03-2025: 256K context, 111B parameters
Together AI
Various Legacy Models
Various Legacy Models
Deprecated: RecentlyRecommended Alternatives: Contact Pulze team for specific recommendations based on your use case.Migration Notes: We can help identify optimal replacements from our current model catalog.
Mistral
Large 2407
Large 2407
Deprecated: RecentlyRecommended Alternatives: Contact Pulze team for recommendations based on your specific use case.Migration Notes: Multiple strong alternatives available across providers.
Mixtral 8x22B
Mixtral 8x22B
Deprecated: RecentlyRecommended Alternatives: Contact Pulze team for recommendations based on your specific use case.Migration Notes: Newer models offer better performance and capabilities.
Upcoming Deprecations
These models will be deprecated on the specified dates:Plan migrations before these deprecation dates to avoid service disruption.
Anthropic
Claude 3 Opus - January 5, 2026
Claude 3 Opus - January 5, 2026
Deprecation Date: January 5, 2026Recommended Alternatives:
- Claude Opus 4.1: Direct upgrade with significant improvements
- Claude Sonnet 4.5: Best for complex agents and coding tasks
- Improved reasoning capabilities
- Better long-context handling
- Enhanced coding abilities
- More reliable tool use
Gemini 2.0 Flash Models - February 5, 2026
Gemini 2.0 Flash Models - February 5, 2026
Deprecation Date: February 5, 2026Recommended Alternatives:
- Gemini 2.5 Flash: Direct upgrade with better price/performance
- Gemini 2.5 Pro: For more complex reasoning tasks
- Improved thinking capabilities
- Better reasoning performance
- Enhanced multimodal understanding
- Competitive pricing
Recommended Models for Evaluation
When migrating or selecting new models, we recommend evaluating these current best-in-class options:Top Performers by Category
Reasoning & General Intelligence- xAI Grok 4 Fast: Currently leading all benchmarks as best model in the world (2M context)
- OpenAI GPT-5: Flagship model with 400K context window
- Anthropic Claude Opus 4.1: Very capable with highest intelligence
- Anthropic Claude Sonnet 4.5: Best for complex agents and coding
- OpenAI GPT-5 Codex: Optimized for agentic coding environments
- xAI Grok Code Fast: Advanced for agentic coding tasks
- Google Gemini 2.5 Flash: Best price/performance with thinking capabilities
- OpenAI GPT-5 Nano: Fastest, most affordable option
- OpenAI GPT-5 Mini: Cost-efficient with high reasoning capabilities
- OpenAI o3-deep-research: Complex multi-step research tasks
- Google Gemini 2.5 Pro: Advanced reasoning with 1M+ context window
- AI21Labs Jamba Large 1.7: Novel Mamba-Transformer architecture, 256K context
- Groq Compound: Integrated tool orchestration (web search, code execution, browser automation)
Deprecation Policy
How We Handle Deprecations
- Advance Notice: Minimum 90 days notice before deprecation
- Migration Support: Technical guidance and testing assistance
- Recommendations: Clear alternatives for each deprecated model
- Gradual Transition: Staged rollout of replacements
Why Models Are Deprecated
Models may be deprecated due to:- Provider Updates: Model provider releases significantly better versions
- Performance: Newer models substantially outperform on benchmarks
- Cost: Better price/performance alternatives become available
- Capabilities: New models offer features not in older versions
- Provider Sunset: Original provider discontinues the model
Staying Informed
- Email Notifications: We email all affected organizations before deprecations
- Documentation: This page is kept current with all deprecation information
- Support Channel: Contact support@pulze.ai with migration questions
- Slack/Discord: Join our community for real-time updates
Migration Best Practices
Before Migrating
- Review Use Cases: Understand how you’re using the deprecated model
- Evaluate Alternatives: Test recommended replacements with your workloads
- Check Compatibility: Ensure new models support your required features
- Plan Timeline: Allow sufficient time for testing and rollout
During Migration
- Start with Test Spaces: Validate in non-production environments first
- Run Evaluations: Compare new model performance against your datasets
- Monitor Closely: Track quality, cost, and performance metrics
- Gather Feedback: Get user input on new model performance
After Migration
- Monitor Performance: Track ongoing quality and cost metrics
- Adjust Routing: Update custom routers if applicable
- Document Changes: Update internal documentation and playbooks
- Share Learnings: Help your team understand any behavioral differences
Need Help?
Our team is here to support your migration:Contact Support
Email support@pulze.ai for migration assistance
Schedule Consultation
Book time with our team to plan your migration
Model Catalog
Explore all currently available models
Custom Routers
Update routing logic after migration