Claude Haiku 4.5 vs Codestral 2508 for Students
In our testing Claude Haiku 4.5 is the clear winner for Students, scoring 4.6667 vs Codestral 2508's 3.0 on our 1–5 Students task. Haiku 4.5 beats Codestral on the three primary student tests — strategic_analysis (5 vs 2) and creative_problem_solving (4 vs 2) — and adds higher persona_consistency (5 vs 3) and safety_calibration (2 vs 1). Codestral 2508 only narrowly wins structured_output (5 vs 4) and is substantially cheaper (input/output cost 0.3/0.9 vs Haiku's 1/5 per m-token), but for essay quality, nuanced reasoning, tutoring tone, and study planning Haiku 4.5 is superior in our benchmarks.
anthropic
Claude Haiku 4.5
Benchmark Scores
External Benchmarks
Pricing
Input
$1.00/MTok
Output
$5.00/MTok
modelpicker.net
mistral
Codestral 2508
Benchmark Scores
External Benchmarks
Pricing
Input
$0.300/MTok
Output
$0.900/MTok
modelpicker.net
Task Analysis
Students need (1) nuanced argument and tradeoff reasoning for essays and research (strategic_analysis), (2) faithful summaries and citations (faithfulness), and (3) creative study strategies and problem-solving (creative_problem_solving). Our Students task uses those three tests as the primary signal. There is no external benchmark for this task in the payload, so we base the winner on our internal task scores: Claude Haiku 4.5 scores 4.6667 vs Codestral 2508 at 3.0. Supporting internal metrics explain why: Haiku 4.5 scores 5 in strategic_analysis and 4 in creative_problem_solving (strong at nuanced reasoning and ideation), plus 5 in persona_consistency and 5 in long_context (good for multi-session study and consistent tutoring voice). Codestral 2508 scores 5 in structured_output and 5 in long_context and ties on faithfulness and tool_calling, which makes it excellent for strict JSON/CSV flashcard exports or reproducible study pipelines, but its lower strategic (2) and creative (2) scores indicate weaker essay-level reasoning and brainstorming in our tests.
Practical Examples
Where Claude Haiku 4.5 shines (use our scores):
- Drafting and revising an argumentative essay: Haiku 4.5's strategic_analysis 5 vs Codestral 2 yields clearer thesis tradeoffs and evidence weighting.
- Research synthesis and study guides: faithfulness 5 and long_context 5 let Haiku synthesize long source material into accurate summaries and multi-section study plans.
- Tutoring and stepwise problem breakdown: persona_consistency 5 and agentic_planning 5 make Haiku better at consistent, scaffolded explanations.
Where Codestral 2508 shines (use our scores and cost data):
- Exporting flashcards, CSV schedules, or strict JSON study templates: structured_output 5 vs Haiku 4 ensures schema compliance and format fidelity.
- Large-context reproducible notes at lower cost: Codestral has a 256k context window vs Haiku 200k, and is much cheaper (input/output cost per m-token 0.3/0.9 vs Haiku 1/5), so it’s better when you need many structured exports on a budget.
- Faithful quoting and tool-like workflows: faithfulness ties at 5 and tool_calling ties at 5, so Codestral performs on par for extracting exact passages and calling format-preserving tools.
Bottom Line
For Students, choose Claude Haiku 4.5 if you need better essay reasoning, research synthesis, stepwise tutoring, or multilingual study help (Haiku scores 4.6667 vs 3.0). Choose Codestral 2508 if strict structured outputs (JSON/CSV flashcards), larger context windows with lower cost, or high-volume schema-compliant exports are your priority.
How We Test
We test every model against our 12-benchmark suite covering tool calling, agentic planning, creative problem solving, safety calibration, and more. Each test is scored 1–5 by an LLM judge. Read our full methodology.