Claude Sonnet 4.5 vs Granite 4.2 30B
Benchmark Performance
Available Benchmarks
| Benchmark | Claude Sonnet 4.5 | Granite 4.2 30B |
|---|---|---|
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · leader | 1,433.95100% of row best · rating · claude-sonnet-4-5-20250929-high-32k; 95% CI [1431.13754052, 1436.75329939]; votes 81031; rank 79 | 1,362.5595% of row best · rating · granite-4.2-30b; 95% CI [1351.93384890, 1373.17607017]; votes 3287; rank 177 |
| Overall ResultCounted from the protocol-matched rows above | 1 benchmark winOverall lead | 0 benchmark wins |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Technical Differences
Side-by-Side Facts
| Field | Claude Sonnet 4.5 | Granite 4.2 30B |
|---|---|---|
| Developer | Anthropic | IBM |
| Family | Claude 4 | Granite 4 2 |
| Model | Claude Sonnet 4.5 | Granite 4.2 30B |
| Version | Claude Sonnet 4.5 | Granite 4.2 30B |
| Lifecycle | active | active |
| Released | 2025-09-29 | 2026-08-25 |
| Knowledge cutoff | 2025-01-01 | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 200K | 131K |
| Total parameters | Unknown | 29.3B |
| Active parameters | Unknown | Unknown |
| License | Unknown | apache-2.0 |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Anthropic (Standard) | Deepinfra (Standard) |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | chat, generation, reasoning, structured_outputs, tools |
14 comparable fields · 10 material differences · Pair passes the primary-source comparison gate
Claude Sonnet 4.5 Capabilities
Granite 4.2 30B Capabilities
Internal Comparison Graph
Related Comparisons
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|---|---|---|---|
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Claude Sonnet 4.5Anthropic | vs | Seed 2.1 ProByteDance Seed | cross-developer peersimage, text |
Claude Sonnet 4.5Anthropic | vs |  Mistral Large 3Mistral AI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Sonnet 4.5 vs Granite 4.2 30B FAQs
Is Claude Sonnet 4.5 or Granite 4.2 30B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Sonnet 4.5 and Granite 4.2 30B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Sonnet 4.5 or Granite 4.2 30B?+
Claude Sonnet 4.5 is $3.00 and Granite 4.2 30B is $0.16 per million tokens, so Granite 4.2 30B is cheaper on this metric. Claude Sonnet 4.5 is $15.00 and Granite 4.2 30B is $0.65 per million tokens, so Granite 4.2 30B is cheaper on this metric.
Which has a larger context window, Claude Sonnet 4.5 or Granite 4.2 30B?+
Claude Sonnet 4.5 has the larger sourced context window. Claude Sonnet 4.5 supports 200K and Granite 4.2 30B supports 131K.
Which performs better in benchmarks, Claude Sonnet 4.5 or Granite 4.2 30B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Claude Sonnet 4.5 or Granite 4.2 30B be self-hosted?+
Granite 4.2 30B is the only model in this pair currently marked as self-hostable. Claude Sonnet 4.5 is not marked open weight; Granite 4.2 30B is open weight.
Can Claude Sonnet 4.5 and Granite 4.2 30B understand images?+
Claude Sonnet 4.5 is documented with image input; Granite 4.2 30B is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Sonnet 4.5 or Granite 4.2 30B?+
Neither has a larger sourced maximum output. Claude Sonnet 4.5 is 64K and Granite 4.2 30B is —.
Do Claude Sonnet 4.5 and Granite 4.2 30B support reasoning and tool use?+
Claude Sonnet 4.5: reasoning, tool calling, and image input. Granite 4.2 30B: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Sonnet 4.5 or Granite 4.2 30B?+
Claude Sonnet 4.5 has 1 sourced provider route; Granite 4.2 30B has 1, a tie.
Which offers better value, Claude Sonnet 4.5 or Granite 4.2 30B?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.