When to look beyond GPT-6 Astra
A high-capability frontier model for complex agent work, but its premium output price and critical cyber safeguards make task-level cost, access and operational controls part of the buying decision. HubAI scoring is withheld until an independent same-task test is complete. Still, teams should test alternatives when pricing, data controls, output style, integrations or trial limits make a different product more practical.
Keep, add or replace?
Keep GPT-6 Astra if it meets the acceptance checks for your repeated work. Add another tool when it fills one missing capability. Replace it only after a same-work test covers results, total cost and the migration burden.
Before moving the workflow
- For model ai: Record the exact model ID, context and output limits. Price cached input, long context, tool calls and retries separately. Freeze tasks and tool permissions before comparing releases.
- Run the current and proposed routes on the same approved input. Record accepted results, corrections, reviewer time and total cost; keep vendor claims separate.
- Keep the original files and current workflow available. Check data export, deletion, cancellation and connector revocation before retiring the old service.
Profile check: 10 September 2026. Official GPT-6 Astra source. Record the pilot before renewing or replacing seats.
Model AI · Model AIClaude Fable 5.1
A broadly available frontier model whose reduced cache-read cost could materially improve persistent agent economics, but HubAI will not score vendor benchmark claims before an independent same-task test.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is long-running coding, research, knowledge work and context-heavy agents.
- Check current access and plan limits not verified; confirm at the official source. before committing paid budget.
Strongest reasonBroad API and enterprise-cloud availabilityMain limitationPremium $50/M output-token price
Profile check: Not recorded. Official product source.
Code AI · Model AIClaude Haiku 5.5
A pilot candidate for bounded, high-volume tasks. Recount tokens, inspect the 100K price boundary and migrate request behaviour before changing production routing. Independent same-task Test pending; no HubAI Score.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is narrow, repeated classification, extraction, routing, compaction and subagent work with measured acceptance rules.
- Check metered api access; no unmetered free trial verified. eligible max/team api credits have separate rollout, eligibility and expiry rules. uk account and regional provisioning must be confirmed. before committing paid budget.
Strongest reasonPublished tiered rates and documented first-party API model IDMain limitationPrompts over 100K use higher listed rates; full cost includes retries and review
Profile check: 8 October 2026. Official product source.
Model AI · Model AIClaude Mythos 5.1
A specialist pilot candidate when general safeguards block legitimate security work. Choose the tier around authorised actions, identity and retention before requesting access. The expanded CVP route supersedes the older Glasswing-only description; actual UK entitlement is not established. Independent same-task testing remains pending and no HubAI Score is assigned.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is verified security professionals evaluating authorised defensive work; broader or safety-system testing requires a suitable cvp tier.
- Check no unrestricted public trial. cvp application and provisioning are required; individuals can apply only for defense access on a paid plan. uk account and route eligibility must be confirmed before committing paid budget.
Strongest reasonDefined Defense, Red Team and Specialized Access scopes provide a clearer security application routeMain limitationVerification, route-specific provisioning and UK eligibility remain conditions of access
Profile check: 7 October 2026. Official product source.
Code AI · Model AIClaude Opus 5.5
A lower-priced Opus route with a 1M context window and always-on adaptive thinking. It is a credible long-agent candidate, but orchestration behaviour and provider claims require a same-work migration test, so HubAI withholds a score.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is long-running agentic coding and professional knowledge work where migration changes can be tested before production.
- Check paid api and cloud-platform access; availability across claude plans varies by entitlement and route before committing paid budget.
Strongest reasonPublished one-million-token context window and 128K output limitMain limitationAdaptive thinking cannot be disabled and forced tool use can return an error
Profile check: 23 September 2026. Official product source.
Code AI · Model AIClaude Sonnet 5.5
A practical large-context baseline for coding and knowledge work with the same published token rates as Sonnet 5. Changed thinking and tool behaviour still require a same-work migration test, so HubAI withholds a score.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is coding, agentic and professional knowledge work that needs a large context window at lower token rates than the opus tier.
- Check metered api and cloud-platform access; availability across claude and paid github copilot plans depends on entitlement, rollout, route and administrator policy before committing paid budget.
Strongest reasonPublished one-million-token context window and 128K maximum outputMain limitationDisabled thinking, forced tools and older computer-use assumptions can require migration work
Profile check: 8 October 2026. Official product source.
Code AI · Model AICognition SWE-2
Cognition's latest coding model is designed for agentic repository work and configurable effort. Vendor-arranged benchmark results position it as a cost-efficient sidekick, but independent capability, reliability and cost-per-accepted-change testing is pending.
- Same catalogue category: Model AI. Confirm the exact workflow; category membership does not establish equivalent features.
- The strongest comparison point is cost-aware agentic coding as a standalone devin model or the execution sidekick in devin fusion.
- Check devin free has limited model availability; paid plans provide full model access before committing paid budget.
Strongest reasonDesigned specifically for multi-turn agentic coding workflowsMain limitationPromotional access ends on a published date and future terms are not guaranteed
Profile check: 13 September 2026. Official product source.